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Lexus · Known Issues

2019-2025 Lexus UX Problems: 13 Known Issues

2019-2025 model years · 3,500+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 3,500+ owner reports, the 2019-2025 Lexus UX has 13 documented known issues, with 4 rated critical. The most serious are Misrouted Engine-Room Wire Harness Fractures and Kills Drive Power (Recall 24V-587, 2025 UX 300h) ($0-$0 repair), 'Hybrid System Malfunction' from MG1/MG2-to-Inverter Overcurrent (TSB L-SB-0006-20) ($0-$6,000 repair), Brake Booster Pump Failure Disables Vehicle Stability Control and Braking Assist (Recall 19V-544) ($0-$2,500 repair) and Denso Low-Pressure Fuel Pump Impeller Swells and Seizes, Causing Stalling (Recall 20V-682) ($0-$1,100 repair). The most commonly reported issue is Infotainment System Lag and Touchpad Frustration with 2,000 owner reports. Across all issues with published estimates, repair costs range from $100 to $6,000. DIY maintenance guides at au7o.io.

In This Article

  • UX Electrical4
  • UX Brakes1
  • UX Fuel System1
  • UX Interior2
  • UX Safety/Recalls1
  • UX HVAC1
  • UX Cooling1
  • UX Transmission1
  • UX Steering1
  • FAQ
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In This Article

  • Electrical4
  • Brakes1
  • Fuel System1
  • Interior2
  • Safety/Recalls1
  • HVAC1
  • Cooling1
  • Transmission1
  • Steering1
  • FAQ

All 13 Known Issues

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Frequently Asked Questions

What are the most common Lexus UX problems?

According to Au7o's analysis of 3,500+ owner reports, the 2019-2025 Lexus UX has 13 documented issues. The most frequently reported are: Misrouted Engine-Room Wire Harness Fractures and Kills Drive Power (Recall 24V-587, 2025 UX 300h), 'Hybrid System Malfunction' from MG1/MG2-to-Inverter Overcurrent (TSB L-SB-0006-20), Brake Booster Pump Failure Disables Vehicle Stability Control and Braking Assist (Recall 19V-544). Of these, 4 are rated critical and should be addressed promptly.

Is the Lexus UX reliable?

The 2019-2025 Lexus UX has 13 known issues documented across 3,500+ owner reports. 4 issues are rated critical: Misrouted Engine-Room Wire Harness Fractures and Kills Drive Power (Recall 24V-587, 2025 UX 300h) and 'Hybrid System Malfunction' from MG1/MG2-to-Inverter Overcurrent (TSB L-SB-0006-20) and Brake Booster Pump Failure Disables Vehicle Stability Control and Braking Assist (Recall 19V-544) and Denso Low-Pressure Fuel Pump Impeller Swells and Seizes, Causing Stalling (Recall 20V-682). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Lexus UX problems?

Repair costs for known Lexus UX issues range from $0 to $6,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Misrouted Engine-Room Wire Harness Fractures and Kills Drive Power (Recall 24V-587, 2025 UX 300h), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What year Lexus UX is the most reliable?

Reliability varies across model years of the Lexus UX. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2019-2025 Lexus UX with 13 documented issues documented across 3,500+ owner reports.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 3,500+ owner reports, NHTSA recalls, TSBs, and automotive forums.

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The 2025 UX 300h replaced the UX 250h with a fifth-generation hybrid system. Toyota's harness supplier (Yazaki) notified Toyota in January 2024 that the engine room main wire harness on a narrow build window had been misrouted. In that routing the harness sees additional bending stress in service, and one of the two power wires feeding the motor generator ECU may fracture; because the two wires run together, both can fail, cutting power to the MG ECU and causing a sudden loss of drive power while the vehicle is moving. NHTSA campaign 24V-587 covers 141 U.S.-market vehicles built between January 9 and January 17, 2024. The population is small, but the failure mode is a loss of motive power in traffic, so a 2025 UX 300h should always be VIN-checked before purchase.

Common Symptoms

  • Sudden loss of drive power while driving
  • Hybrid system warning message
  • Vehicle will not move or will not enter READY
  • Warning lights on the instrument cluster

How to Fix

Free recall remedy. Under NHTSA campaign 24V-587 Lexus dealers replace the engine room main wire harness with a correctly routed unit at no charge. Owner notification letters were mailed between September 23 and October 7, 2024. Verify by entering the 17-character VIN at lexus.com/recall or nhtsa.gov/recalls - build date, not model year, determines whether a given car is affected.

Typical repair cost:$0 - $0

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High ConfidenceVerifiedReviewed Aug 2026

2019-2020 UX 250h vehicles can illuminate the MIL and display a 'Hybrid System Malfunction' message accompanied by one or more DTCs representing an overcurrent condition between motor-generator MG1, motor-generator MG2, and the inverter. Lexus documented the condition in TSB L-SB-0006-20 (March 10, 2020), which also covers the ES 300h - both share the same generation of transaxle and inverter hardware. In service the car typically drops into a limited-power limp mode or refuses to enter READY; owners on the Lexus Owners Club have reported the message appearing without warning on otherwise healthy low-mileage cars. This is specific to the UX 250h hybrid; the UX 200 has no motor-generators or inverter and cannot exhibit it.

Common Symptoms

  • 'Hybrid System Malfunction' message on the multi-information display
  • Check engine light / MIL on
  • Reduced power or limp-home mode
  • Vehicle will not enter READY mode
  • Master warning light and hybrid system warning triangle

How to Fix

Diagnose per Lexus TSB L-SB-0006-20 rather than replacing parts on a code read - the bulletin exists precisely because the stored overcurrent DTCs can point at the transaxle motor-generators, the inverter/converter assembly, or the three-phase cables between them. Hybrid system components are covered by Lexus's 8-year/100,000-mile hybrid component warranty (longer in CARB states), so a car inside that window should be repaired at no cost. Outside warranty the repair is typically inverter/converter assembly replacement, which is the expensive end of the range.

Typical repair cost:$0 - $6,000

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Medium ConfidenceVerifiedReviewed Aug 2026

The UX's 12V auxiliary battery is small relative to the standby load the vehicle places on it, and early software in the telematics module kept systems awake longer than intended after shutdown, accelerating the drain. The practical result is a battery that dies if the car sits unused for several days and that reaches end of life in two to three years rather than five or six. Because so much of the UX depends on stable 12V supply, a weak battery does not present as a simple no-start: it produces infotainment freezes, spurious hybrid and driver-assist warnings, and erratic module behavior that gets misdiagnosed as expensive electronic faults. This is most pronounced on 2019-2020 cars, the earliest software.

Common Symptoms

  • Vehicle will not start after sitting two or more days
  • 12V battery needing replacement every two to three years
  • Infotainment freezing or rebooting
  • Spurious hybrid system or driver-assist warning lights
  • Multiple unrelated warning lights appearing together
  • Slow cranking or clicking on start

How to Fix

Before chasing any electrical complaint on a UX, load-test the 12V battery and check its date code — replacing a marginal three-year-old battery resolves a surprising share of infotainment and warning-light complaints on this car. Ask the dealer whether telematics and body control software updates are available for the VIN, since the drain was addressed in software on the early cars. If the vehicle regularly sits for more than a few days, a quality battery maintainer is the practical fix and costs far less than the tow. When replacing, fit the correct AGM specification rather than a cheaper flooded battery — the charging strategy expects AGM and a substitute fails early. On the hybrid UX 250h, note that a dead 12V battery does not mean the hybrid traction battery has failed; the two are entirely separate systems and the 12V is the one that strands you.

Typical repair cost:$200 - $500

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Community reported
2,000 owners

The UX shares the same frustrating Remote Touch Interface touchpad and laggy infotainment system as other Lexus models. The small screen and imprecise touchpad make basic operations like changing radio stations or entering navigation destinations unnecessarily difficult. The system is slow to boot and respond to inputs.

This issue also affects: Toyota Corolla Cross, Lexus LC, Lexus LS

Common Symptoms

  • Slow screen response to touchpad inputs
  • Cursor overshoots menu items
  • System takes 15+ seconds to boot
  • Bluetooth disconnects and reconnects
  • Navigation is slow to render

How to Fix

Update infotainment software to the latest version. The 2020+ models can have Apple CarPlay/Android Auto added, which dramatically improves the user experience. Use voice commands for navigation and phone functions to avoid the touchpad entirely.

Owner tips & cautions

  • TipIf your UX does not have Apple CarPlay, ask your dealer about the retrofit — Lexus offers a dealer-installed upgrade for 2019-2020 models that adds CarPlay support and dramatically improves daily usability.

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Based on 2,000 owner reports

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Improperly manufactured brake booster pumps installed in early-build 2019 UX 250h hybrids can stop operating. Because the UX 250h uses an electro-hydraulic brake system in which an electric pump charges an accumulator to provide power assist and regenerative-brake blending, a dead pump means the assist reservoir is never recharged. Multiple warning lights and chimes appear, Vehicle Stability Control is deactivated, and after several pedal applications the stored pressure is exhausted and braking assist can be lost entirely, leaving a hard pedal and greatly increased stopping distance. NHTSA treated this as a non-compliance with FMVSS 126 (Electronic Stability Control Systems) rather than only a defect. Approximately 6,900 U.S. vehicles across the UX 250h, ES 300h, LC 500 and LC 500h were covered. This is hybrid-only - the UX 200 with the M20A-FKS uses a conventional vacuum-assisted brake system and is not affected by this campaign.

Common Symptoms

  • Multiple warning lights illuminate (brake, ABS, VSC, slip indicator)
  • Audible warning chimes
  • Brake pedal becomes hard after several applications
  • Increased stopping distance / loss of power brake assist
  • VSC and traction control disabled
  • Whining or continuously running pump noise before failure

How to Fix

Free recall remedy. Under NHTSA campaign 19V-544 Lexus dealers inspect the brake booster pump and replace it at no charge; the remedy launched September 20, 2019. Check the VIN at lexus.com/recall or nhtsa.gov/recalls - a used 2019 UX 250h may still be unremedied. If the pump fails outside the recall population, the fix is replacement of the pump/accumulator assembly, and the vehicle should not be driven with braking assist warnings active.

Typical repair cost:$0 - $2,500

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High ConfidenceVerifiedReviewed Aug 2026

The in-tank low-pressure fuel pump supplied by Denso uses a resin impeller that was produced at too low a density. Over time the impeller absorbs fuel, swells, and interferes with the pump body, so the pump slows or stops. The engine runs rough, the check engine and master warning lights come on, the vehicle may become hard to start, and it can stall while driving - usually below 20 mph but in rare cases at higher speed. Both the UX 200 and the UX 250h were included because both share the same in-tank pump module. This was the single largest Toyota/Lexus quality campaign of its era, expanding through 20V-012 and then 20V-682 to cover roughly 1.3 million additional vehicles including the 2019 UX. A class action separately alleged that affected 2018-2019 vehicles were left out of the original January 2020 campaign, so a 2019 UX that was not covered by 20V-012 may have been picked up by the later expansion - verify by VIN rather than by model year.

Common Symptoms

  • Engine stalls while driving, typically at low speed
  • Rough running or misfire feel
  • Hard starting or extended cranking
  • Check engine light and master warning light on
  • Loss of power / hesitation under load
  • Whining or absent fuel pump prime noise at key-on

How to Fix

Free recall remedy. Under NHTSA campaign 20V-682 (Lexus recall 20LA01 / Toyota 20TA02 lineage) dealers replace the complete fuel pump assembly with a redesigned higher-density-impeller unit at no charge; remedy parts became available January 2021. Run the VIN through lexus.com/recall - many used UX examples changed hands before the remedy was performed. Outside the recall, replacement of the fuel pump assembly is the only fix; no additive or cleaning corrects a swollen impeller.

Typical repair cost:$0 - $1,100

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High ConfidenceVerifiedReviewed Aug 2026

UX owners report a distinct buzz or rattle from the front side doors that appears on broken or non-smooth pavement and is often mistaken for a loose trim clip or an object in the door pocket. Owners who pursued it with the dealer found the cause was poor contact between the door's aluminum outer panel and the plastic interior trim panel, with the door pins/locating pins knocking against the structure; the documented dealer repair was to isolate the two panels from each other. A related and frequently reported version of the same complaint is a front door speaker rattle at moderate volume, particularly with bass content, because the speaker mounts to the same trim panel. Reported across the 2019-present generation and on both the UX 200 and UX 250h, since the door structure is common to both.

Common Symptoms

  • Rattle or buzz from the front door on rough roads
  • Speaker buzz at moderate to high volume, worse with bass
  • Noise disappears on smooth pavement
  • Pressing on the door trim panel changes or stops the noise

How to Fix

Have the dealer remove the front door trim panel and add felt or foam isolation between the aluminum door panel and the plastic trim panel at the contact/pin points - this is the repair owners report as successful. For the speaker-specific buzz, re-seat and torque the speaker mounting screws and add a foam gasket ring behind the speaker basket. Common DIY equivalents are felt tape on the trim clips and closed-cell foam behind the door card. Usually covered under the 4-year/50,000-mile basic warranty if documented while in period; insist the tech ride along, as the noise will not reproduce on a smooth shop floor.

Typical repair cost:$0 - $300

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One of the most consistently repeated owner complaints in the ClubLexus UX subforum is highway noise that owners describe as 'sounding like being on a plane' - loud enough that buyers who cross-shopped the UX against an NX or a German rival feel short-changed on the luxury claim. It is not a defect in the usual sense but a build-content difference that dealers routinely dismiss as 'normal': the UX Luxury trim is fitted with Acoustic Laminated Front Side Door Glass, while the base and F Sport trims are not. Owners who compared cars back to back found the difference tracks the trim, not a fault. Tire choice compounds it - the F Sport's wider, stiffer-sidewall performance tires generate noticeably more coarse-road roar than the base fitment. This is a real ownership issue because there is no warranty repair for it, and it is trim-specific rather than year-specific.

Common Symptoms

  • Loud droning road noise at highway speed
  • Wind noise around the front side glass
  • Difficulty holding a conversation or hearing the audio system at speed
  • Noise noticeably worse on coarse or chip-seal pavement

How to Fix

There is no warranty remedy; a dealer will correctly report 'operating as designed.' The practical fixes owners report are, in order of effectiveness: fit acoustic laminated front door glass from the Luxury trim (the most expensive route), add mass-loaded vinyl and closed-cell foam sound deadening to the front doors, floor and rear wheel arches, and switch to a quieter touring tire at the next replacement. Buyers who care about cabin quiet should test-drive the specific trim they intend to buy on the highway - a Luxury and an F Sport are meaningfully different cars for noise.

Typical repair cost:$200 - $1,200

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Low ConfidenceVerifiedReviewed Aug 2026

The UX's Data Communication Module (DCM) drives Safety Connect - the emergency SOS call button in the overhead console, automatic collision notification, and stolen vehicle locator. Lexus issued a sequence of bulletins on this module: L-SB-0032-20 (August 2020, revised September 2021) covering an inoperative SOS button and an inoperative Bluetooth microphone on vehicles with the Continental-supplied DCM, and L-SB-0036-21 (October 2021, superseding L-SB-0036-20) covering a red SOS LED that stays illuminated after the bulb check with DTC B15A804 stored. Related bulletins cover telematics going dead after a DCM replacement (L-TT-0293-20) and Lexus Enform Remote app inoperability (L-TT-0279-20). The practical consequence is that the car's crash-notification safety feature is silently dead - the red LED is often the only clue - and the hands-free microphone frequently fails at the same time because both run through the DCM. Because the same module is shared across both powertrains, this affects UX 200 and UX 250h alike.

This issue also affects: Toyota Camry, Toyota RAV4

Common Symptoms

  • Red SOS LED stays on after the ignition bulb check
  • SOS emergency call button does not work
  • Bluetooth hands-free microphone inoperative - callers cannot hear the driver
  • Lexus Enform Remote app will not activate or stops working
  • Telematics services dead after DCM replacement
  • Safety Connect subscription shows as unavailable

How to Fix

Have the dealer read the DCM for B15A804 and apply the applicable bulletin. Depending on which bulletin matches, the remedy is a DCM software/firmware update or replacement of the Data Communication Module; after any DCM replacement the telematics account must be re-activated per L-TT-0293-20 or services will remain inoperative. Safety Connect hardware is a warranty item within basic coverage. Do not assume the SOS system works because the car is new - press and confirm the LED behaviour on any used UX.

Typical repair cost:$0 - $1,200

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High ConfidenceVerifiedReviewed Aug 2026

Lexus published L-TT-0294-20 (October 30, 2020) covering a condition in which the HVAC evaporator drain tube is found blocked or clogged on UX 200 and UX 250h vehicles. When the drain plugs, condensate that should exit under the car backs up in the evaporator case. Owners find a damp or soaked passenger-side carpet, a sloshing sound behind the dash on turns and stops, windows that fog and will not clear, and a persistent musty or mildew smell from the vents. Because the UX's carpet and underlay sit directly over body-control wiring runs, standing water left long enough is a route to intermittent electrical faults, which is why this deserves prompt attention rather than being written off as a smell complaint.

Common Symptoms

  • Wet or damp passenger-side floor carpet
  • Water sloshing sound behind the dash when braking or turning
  • Musty or mildew smell from the air vents
  • Windshield fogs up and is slow to clear
  • Reduced A/C airflow or performance

How to Fix

Have the evaporator drain tube cleared per Lexus bulletin L-TT-0294-20 - the tube is accessed from the engine-side firewall and is cleared with low-pressure air or a soft flexible probe; never force a stiff wire, which can puncture the evaporator case. Dry the carpet and jute underlay completely and treat the evaporator core with an approved HVAC disinfectant if odor is present, and replace a soaked cabin filter. Clearing the drain is inexpensive; the cost of ignoring it is carpet replacement and mold remediation.

Typical repair cost:$100 - $400

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Medium ConfidenceVerifiedReviewed Aug 2026

The M20A-FKS in the UX 200 uses an electrically actuated coolant flow shut-off valve (also called the coolant bypass or control valve) that blocks flow through the block during warm-up to speed the engine to operating temperature. On 2019-2021 UX 200 vehicles the valve develops a small external coolant seep and the internal actuator circuit fails, setting P268111 (bypass valve circuit short to ground) or P268115 (circuit short to battery or open) and posting an 'Engine Maintenance Required' message in the multi-information display. The leak is slow and often mistaken for a non-issue, but coolant dripping onto surrounding components has been documented to cause A/C system malfunction as well. Lexus issued TSB L-SB-0051-24 (Toyota's parallel bulletin is T-SB-0112-24) directing replacement with an updated valve, superseding part 16671-F2010 with 16671-F2030. This is a UX 200 issue tied to the Dynamic Force gasoline engine family - the UX 250h hybrid uses a different cooling architecture and is not listed in the bulletin's applicability.

This issue also affects: Toyota RAV4

Common Symptoms

  • 'Engine Maintenance Required' message in the multi-information display
  • Check engine light
  • Small coolant seep/drip near the front of the engine
  • Low coolant level over time
  • Slow warm-up or erratic temperature gauge behavior
  • Air conditioning performance loss from coolant contamination of adjacent components

How to Fix

Replace the coolant flow shut-off valve with the updated part (16671-F2030, superseding 16671-F2010) and refill/bleed the cooling system per TSB L-SB-0051-24. Critically, 2019-2020 UX 200 vehicles are covered by Lexus Customer Support Program 24LE02 (Toyota's version is 24TE04), which pays for the repair regardless of mileage - call any Lexus dealer with the VIN and ask them to check 24LE02 before paying out of pocket. Do not simply clear the code: the valve does not recover.

Typical repair cost:$0 - $600

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Community reported
1,500 owners

The UX200 Direct Shift CVT and UX250h eCVT both exhibit noticeable hesitation when accelerating from a stop and during passing maneuvers. The transmission response is delayed by 1-2 seconds after pressing the accelerator, which is particularly noticeable when merging into traffic or making left turns across oncoming traffic.

This issue also affects: Toyota Corolla Cross, Toyota RAV4, Lexus NX

Common Symptoms

  • 1-2 second delay after pressing accelerator
  • Sluggish response when merging onto highway
  • Engine revs but vehicle does not accelerate proportionally
  • Hesitation during passing maneuvers

How to Fix

Update to the latest transmission ECU calibration at the dealer, which improves tip-in response. Use Sport mode for situations requiring quicker response. The UX250h hybrid has better low-speed response than the UX200 due to the electric motor providing instant torque.

Owner tips & cautions

  • TipLeft-foot braking lightly while pressing the accelerator eliminates the hesitation by pre-loading the drivetrain. This is a common technique for Toyota/Lexus CVT-equipped vehicles.

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Based on 1,500 owner reports

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A recurring UX complaint - shared with its TNGA-C platform siblings, the Corolla and C-HR - is a steering wheel that sits several degrees off-center when the car tracks straight, sometimes with a mild pull. Owners report it present from delivery, and report that a conventional four-wheel alignment does not fully resolve it: the car still travels straight with the wheel cocked. Toyota's own diagnostic guidance distinguishes 'vehicle pulling' (the car moves right or left when the wheel is held straight) from 'steering wheel off center' (the car goes straight but the wheel is not level) because the two have different causes - large cross-camber or cross-caster for the pull, and tire lateral force or a mis-indexed steering intermediate shaft/EPS torque sensor centering for the off-center wheel. On an electric-power-steering car the steering angle sensor zero point also has to be re-learned after any alignment, and skipping that step leaves the lane tracing assist steering to a slightly wrong center. UX-specific reports appear on the Lexus Owners Club and the UX forum's problems section.

Common Symptoms

  • Steering wheel sits several degrees off-center while driving straight
  • Mild pull to one side on a level road
  • Alignment performed but the wheel is still not centered
  • Lane tracing assist wanders or nudges to one side

How to Fix

Do not accept a plain toe adjustment. The correct sequence is: check and equalize tire pressures, then perform a full four-wheel alignment measuring cross-camber and cross-caster (not just toe), then re-zero the steering angle sensor and perform the EPS/lane-tracing centering learn with a Techstream-capable tool. If the wheel is still off with the car tracking straight, have the shop cross-swap the front tires left to right to test for tire lateral-force pull - a conicity-affected tire will move the pull with it and is a warrantable tire claim, not an alignment problem. Alignment and the sensor learn are warranty items when documented in the basic warranty period.

Typical repair cost:$100 - $350

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get a full repair guide

What is the 2025 Lexus UX Misrouted Engine-Room Wire Harness Fractures and Kills Drive Power (Recall 24V-587, 2025 UX 300h)?

The 2025 UX 300h replaced the UX 250h with a fifth-generation hybrid system. Toyota's harness supplier (Yazaki) notified Toyota in January 2024 that the engine room main wire harness on a narrow build window had been misrouted. In that routing the harness sees additional bending… Repairs typically run $0-$0. Severity: high.

What is the 2019-2020 Lexus UX 'Hybrid System Malfunction' from MG1/MG2-to-Inverter Overcurrent (TSB L-SB-0006-20)?

2019-2020 UX 250h vehicles can illuminate the MIL and display a 'Hybrid System Malfunction' message accompanied by one or more DTCs representing an overcurrent condition between motor-generator MG1, motor-generator MG2, and the inverter. Lexus documented the condition in TSB L-SB… Repairs typically run $0-$6,000. Severity: high.

What is the 2019 Lexus UX Brake Booster Pump Failure Disables Vehicle Stability Control and Braking Assist (Recall 19V-544)?

Improperly manufactured brake booster pumps installed in early-build 2019 UX 250h hybrids can stop operating. Because the UX 250h uses an electro-hydraulic brake system in which an electric pump charges an accumulator to provide power assist and regenerative-brake blending, a dea… Repairs typically run $0-$2,500. Severity: high.

What is the 2019 Lexus UX Denso Low-Pressure Fuel Pump Impeller Swells and Seizes, Causing Stalling (Recall 20V-682)?

The in-tank low-pressure fuel pump supplied by Denso uses a resin impeller that was produced at too low a density. Over time the impeller absorbs fuel, swells, and interferes with the pump body, so the pump slows or stops. The engine runs rough, the check engine and master warnin… Repairs typically run $0-$1,100. Severity: high.

What is the 2019-2022 Lexus UX Safety Connect SOS Button and DCM Telematics Fail - Red SOS LED Stays On, DTC B15A804?

The UX's Data Communication Module (DCM) drives Safety Connect - the emergency SOS call button in the overhead console, automatic collision notification, and stolen vehicle locator. Lexus issued a sequence of bulletins on this module: L-SB-0032-20 (August 2020, revised September… Repairs typically run $0-$1,200. Severity: medium.

What is the 2019-2022 Lexus UX 12V Auxiliary Battery Drain and Premature Failure?

The UX's 12V auxiliary battery is small relative to the standby load the vehicle places on it, and early software in the telematics module kept systems awake longer than intended after shutdown, accelerating the drain. The practical result is a battery that dies if the car sits u… Repairs typically run $200-$500. Severity: medium.

What is the 2019-2025 Lexus UX Clogged HVAC Evaporator Drain Tube Causes Water on the Passenger Floor and Musty Odor (TSB L-TT-0294-20)?

Lexus published L-TT-0294-20 (October 30, 2020) covering a condition in which the HVAC evaporator drain tube is found blocked or clogged on UX 200 and UX 250h vehicles. When the drain plugs, condensate that should exit under the car backs up in the evaporator case. Owners find a… Repairs typically run $100-$400. Severity: medium.

What is the 2019-2021 Lexus UX Engine Coolant Flow Shut-Off (Bypass) Valve Leaks and Fails - 'Maintenance Required' Message, P268111/P268115?

The M20A-FKS in the UX 200 uses an electrically actuated coolant flow shut-off valve (also called the coolant bypass or control valve) that blocks flow through the block during warm-up to speed the engine to operating temperature. On 2019-2021 UX 200 vehicles the valve develops a… Repairs typically run $0-$600. Severity: medium.

What is the 2019-2023 Lexus UX Infotainment System Lag and Touchpad Frustration?

The UX shares the same frustrating Remote Touch Interface touchpad and laggy infotainment system as other Lexus models. The small screen and imprecise touchpad make basic operations like changing radio stations or entering navigation destinations unnecessarily difficult. The syst… Severity: low.

What is the 2019-2025 Lexus UX CVT Hesitation and Sluggish Response?

The UX200 Direct Shift CVT and UX250h eCVT both exhibit noticeable hesitation when accelerating from a stop and during passing maneuvers. The transmission response is delayed by 1-2 seconds after pressing the accelerator, which is particularly noticeable when merging into traffic… Severity: low.

What is the 2019-2025 Lexus UX Door Panel and Door Speaker Rattle Over Rough Pavement?

UX owners report a distinct buzz or rattle from the front side doors that appears on broken or non-smooth pavement and is often mistaken for a loose trim clip or an object in the door pocket. Owners who pursued it with the dealer found the cause was poor contact between the door'… Repairs typically run $0-$300. Severity: low.

What is the 2019-2025 Lexus UX Excessive Highway Road and Wind Noise on Base and F Sport Trims (No Acoustic Side Glass)?

One of the most consistently repeated owner complaints in the ClubLexus UX subforum is highway noise that owners describe as 'sounding like being on a plane' - loud enough that buyers who cross-shopped the UX against an NX or a German rival feel short-changed on the luxury claim. Repairs typically run $200-$1,200. Severity: low.

What is the 2019-2025 Lexus UX Steering Wheel Sits Off-Center and Vehicle Pulls, Not Corrected by Alignment?

A recurring UX complaint - shared with its TNGA-C platform siblings, the Corolla and C-HR - is a steering wheel that sits several degrees off-center when the car tracks straight, sometimes with a mild pull. Owners report it present from delivery, and report that a conventional fo… Repairs typically run $100-$350. Severity: low.