2005-2026 Hyundai Tucson Problems: 22 Known Issues

On 2019-2021 Tucson, the Mando-supplied ABS hydraulic electronic control unit can short internally and ignite an engine-bay fire while parked or driving. Supplier analysis found soldering flux residue left on the HECU main controller board; heat and humidity let that residue corrode the board and create an electrical short. Hyundai filed the recall after 12 documented fires (nine in 2019 models, two in 2020, one in 2021). Hyundai issued a park-outside-away-from-structures warning because the module stays powered with the ignition off. A follow-on equipment recall (21E038) covered the Mando modules themselves. This is an ABS/electrical defect and is unrelated to the engine or fuel system.

Hyundai recalled certain 2025 Tucson and Santa Cruz vehicles under NHTSA campaign 24V877000 because the console extension wiring assembly may be routed improperly. The misrouted harness defeats the brake-transmission shift interlock, allowing the transmission to be shifted out of Park without the brake pedal being applied. A vehicle that can leave Park without brake application can roll away unattended — the classic failure mode is a driver reaching in to move the shifter, or a child or object bumping it, with the vehicle then rolling free. Hyundai's interim guidance to owners was explicit and unusual: use the parking brake every time you park until the repair is done. Notification letters went out December 17, 2024. This is a build/routing defect rather than a software fault, so it cannot be fixed over the air.

The 2005-2011 Tucson's stop lamp switch develops a high-resistance or open contact. Because the switch feeds far more than the brake lamps, a failure cascades: brake lights stop working, the brake-transmission shift interlock will not release so the vehicle cannot be shifted out of Park, the push-button start (where fitted) may not respond, the Electronic Stability Control can be disabled, and cruise control may fail to disengage on brake application. Hyundai recalled the switch twice - first in 2009 (NHTSA 09V122, Hyundai campaign 092, covering 2005-2007 Tucson) and again in April 2013 (NHTSA 13V113, Hyundai campaign 110), when 1,059,824 vehicles including model year 2007-2009 Accent and Tucson were called back, with a further 652,512 vehicles added that September, extending coverage to 2006-2011 Tucson. The failure is intermittent and often presents first as an inability to shift out of Park in a parking lot.

NHTSA recall 25V-893 covers certain model-year 2022-2024 Hyundai Tucson vehicles equipped with an optional OEM trailer wiring harness installed as a port-installed or dealer-installed option. The harness control module was installed in a location susceptible to water ingress and has insufficient sealing. Water inside the module can make trailer or vehicle stop lamps inoperative or, in rare cases, cause a short that can overheat, melt or ignite, increasing crash and fire risk. Intermittent or inoperative parking, turn-signal, or stop lamps on the vehicle or trailer may provide warning.

The dominant electrical failure on the current Tucson is a software fault that blanks the digital instrument cluster, and on equipped cars the head-up display and center touchscreen along with it. Hyundai has recalled the vehicle for it twice: NHTSA campaign 26V047000 (filed January 2026) covered 2026 Tucson and 2025-2026 Tucson Hybrid and Tucson PHEV among a broad list of Hyundai models, and campaign 26V400000 (filed June 2026) recalled roughly 96,000 2025-2026 Tucson, Tucson Hybrid and Tucson PHEV vehicles for the same symptom from a different cause: 26V047000 traces the cluster reboot to electrical noise in its power-management chip, while 26V400000 traces it to a communication error between the cluster and the head-up display in the cluster software. Both campaigns cite noncompliance with FMVSS 101, 'Controls and Displays,' because the driver loses the speedometer and warning telltales. Fifty-one NHTSA complaints on the 2025 Tucson carry an ELECTRICAL SYSTEM component. Owners describe the cluster showing a black screen with 'NO SIGNAL' for minutes at a time (ODI 11749421), dropping out for three seconds every one to two minutes and taking the side cameras with it (ODI 11729572), a daily and progressively worsening total blackout of cluster and infotainment (ODI 11731497), and one car diagnosed with a rear-view camera display failure behind the blank cluster (ODI 11715488). Several reports pair the blackout with the vehicle stalling or failing to start.

NHTSA recall 23V-526 covers certain model-year 2023 Hyundai Tucson vehicles. The Idle Stop & Go transmission electric oil-pump controller may contain a printed circuit board damaged during manufacturing. A damaged capacitor can affect operation and cause heat damage to the pump circuit board, connector and wiring harness, increasing the risk of a vehicle fire and potentially disrupting controller-area-network communication. Warning signs can include underbody smoke, a burning or melting odor, or warning-lamp illumination.

Hyundai Service Campaign 9B4 (TSB 25-01-010H, superseding 24-01-054H) updates the Battery Management System software on certain 2022–2024 Tucson Hybrid (NX4 HEV) vehicles produced from January 20, 2021 through December 18, 2023 that may show a warning light with DTC P1BB20 (12V Lithium Battery Cell Voltage High). The Tucson Hybrid uses an integrated lithium-polymer 12V battery with its own protective disconnect and reset, described in the owner manual. The campaign addresses this specific warning and code; it is not evidence that every Tucson Hybrid no-start or 12V problem is a software defect, and it does not cover the Plug-In Hybrid.

NHTSA recall 26V-316 covers certain model-year 2025-2026 Hyundai Tucson, Tucson Hybrid and Tucson Plug-in Hybrid vehicles. The front camera software can be overly sensitive to forward-object proximity in certain driving scenarios, causing the Forward Collision-Avoidance Assist system to engage earlier than expected and potentially produce sudden braking. Sudden braking can increase the risk of a rear-end crash from a closely following vehicle.

Hyundai recalled certain 2026 Tucson, Tucson Hybrid and Tucson Plug-In Hybrid vehicles — together with 2025 Elantra N and Elantra — under NHTSA campaign 26V254000 because the B-pillar side impact sensors may have been misassembled. These sensors are what tell the airbag control unit that a side impact is occurring and how severe it is; a misassembled sensor reports the crash pulse late, delaying deployment of the side and curtain air bags. In a side impact the occupant reaches the intruding structure within milliseconds, so a delayed deployment can mean the air bag inflates after the occupant has already made contact, providing little or no protection. The sensors were assembled with incorrect printed circuit boards at the supplier. Hyundai's recall report lists no warning to the driver for this condition, so the defect is invisible until a crash. Owner notification letters were mailed June 11, 2026 under Hyundai recall number 299.

Turn-key Tucsons built without an engine immobilizer can be started by stripping the steering column, exposing the ignition cylinder and turning it with a USB cable or similar metal object - no key code is ever checked. The vulnerability, popularized as the 'Kia Challenge' on TikTok, made these vehicles possible to steal in under 90 seconds and drove insurers in several markets to refuse or surcharge coverage. It is a design omission, not a wear failure: Tucsons from 2011 through 2022 are in the eligible population, and only lower trims with a mechanical key are affected - push-button-start vehicles already had an immobilizer. A class-action settlement valued at more than $200 million resolved owner claims.

Hyundai recalled certain 2025 Tucson vehicles — along with 2025-2026 Santa Cruz, Santa Fe and Santa Fe Hybrid and 2026 Genesis GV70 — under NHTSA campaign 25V809000 because the side curtain air bags may not have been installed properly at the factory. A curtain air bag that is incorrectly routed, incorrectly fastened, or improperly retained along the roof rail will not deploy in the intended path across the side glass, so it may fail to cover the occupant's head in a side impact or rollover. This is an assembly defect distinct from the separate 2026 Tucson B-pillar sensor recall: 25V809000 concerns the physical installation of the curtain module itself, whereas 26V254000 concerns the sensor that triggers deployment. As with the sensor recall, there is no in-service symptom — the airbag readiness lamp does not detect an improperly installed but electrically intact module. Owner notification letters began going out December 29, 2025 under Hyundai recall numbers 289 and 029G.

The Tucson's Driver Attention Warning system uses a driver-monitoring camera mounted on the steering column to track eye position. Multiple NHTSA complaints on the 2025 Tucson report the camera repeatedly failing to acquire the driver's eyes and issuing false distraction alerts — the coffee-cup 'consider taking a break' icon with repeating chimes — during normal attentive driving. The reported triggers are physical rather than behavioral: wearing sunglasses, wearing prescription glasses, and short driver stature that places the eyes outside the camera's field of view (ODI 11717385, 11661987, 11692787). The safety-relevant consequence is that the false alert cancels Smart Cruise Control. Complaint 11698087 describes cruise shutting off mid-pass on an interstate, requiring the driver to look down and reset the system at exactly the moment attention should be on the road — an inversion of the feature's purpose. Complaint 11692400 confirms the same architecture on the prior 2024 Tucson. Owners report that neither Hyundai nor dealers will disable the sensor.

The Theta II GDI engine in 2014-2015 and 2018-2019 Tucson models is susceptible to connecting rod bearing failure caused by manufacturing debris restricting oil flow. This can lead to catastrophic engine seizure, often without warning. Under the Theta II engine class-action settlement, Hyundai extended the powertrain warranty to a Lifetime Warranty (Warranty Extension TXXI) for connecting rod bearing damage on vehicles that complete the Knock Sensor Detection System software update (Service Campaign 953).

Hyundai Recall 281 / NHTSA 25V549 concerns a small, VIN-defined group of vehicles whose connecting-rod bolts may have been insufficiently tightened. The Part 573 report lists 22 US-market 2025–2026 Tucson vehicles with the HMMA-built 2.5L Theta 3 engine produced February 18–August 8, 2025; these dates and the engine description do not replace a VIN check. A connecting-rod bearing cap can loosen, potentially causing engine damage and loss of drive power. In limited instances engine damage can release oil and create a fire risk. The remedy is replacement of the affected engine at no charge for eligible vehicles. This does not establish that every conventional 2.5L Tucson is affected or that any particular fault code proves the defect.

The naturally-aspirated 2.5L Smartstream G2.5 GDI engine (distinct from the older Theta II 2.0/2.4) suffers from fuel dilution of the engine oil and, in some units, sticking oil-control rings that drive excessive oil consumption. Raw injected fuel washes past the rings into the crankcase, thinning the oil and, where rings stick, owners report burning roughly a quart per ~1,000 miles. Depending on which effect dominates, the oil level can rise (fuel dilution) or fall (oil burning). Reports indicate engines built from 2021 to early 2023 are most affected and that the piston/ring design was revised in a mid-2023 update.

The 7-speed dual-clutch transmission (DCT) paired with the 1.6L turbo engine in Tucson models suffers from shuddering during low-speed maneuvers, hesitation from a stop, and jerky shifts. The dry clutch design is prone to premature wear. Hyundai addressed it with TCU software updates (including safety recall 16V-628 for delayed engagement on 2016 models and TSB 21-AT-014H for low-speed judder); clutch replacement falls under normal warranty coverage.

The panoramic sunroof glass on the Tucson can crack or shatter spontaneously without impact. The issue has been reported across multiple model years and has generated significant NHTSA complaints. Thermal stress from temperature differentials and body flex during driving are suspected contributing factors. The large glass panel size makes it more susceptible to stress fractures originating from the bonded edges.

The A/C compressor on the Tucson has a higher-than-average failure rate. The compressor clutch can fail first, making a screeching or grinding noise, followed by complete compressor seizure. When the compressor fails internally, metal debris contaminates the entire A/C system, requiring a full system flush. The condenser is also prone to developing leaks from road debris impact.

Hyundai TSB 23-BD-009H covers certain model-year 2022-2023 Tucson vehicles equipped with non-glossy front door pull handles. The bulletin provides repair information when the front door pull-handle paint is peeling.

Rear brake calipers on Tucson models are prone to seizing due to corroded slide pins, causing uneven pad wear, pulling to one side, and premature rotor warping. The issue is worse in northern climates with road salt exposure. Some owners report rear brakes needing replacement at only 20,000-30,000 miles.

The electromagnetic coupling unit for the AWD system in Tucson models can fail, causing loss of rear-wheel drive engagement. Symptoms include grinding noise from the rear, AWD warning light, and reduced traction in slippery conditions. The coupler motor or the coupling assembly itself wears out prematurely.

Certain 2017-2021 Tucsons finished in Dazzling White (PDW) or Cream White (WW2) shed clear coat in sheets. The failure is delamination: the clear layer never bonded properly to the white base at the factory, typically because the base was sprayed thin, so the clear lifts at an edge and peels away in large patches. Horizontal, sun-exposed panels go first - roof, hood, and the tops of the fenders and liftgate. Owners describe it as peeling skin after a sunburn, and it is progressive rather than a chip-driven cosmetic issue. It affects Tucson alongside Sonata, Elantra and Santa Fe Sport, and has been reported in the US, Canada, Australia and South Africa. Following consumer-affairs news investigations Hyundai extended paint coverage rather than issue a recall - this is not a safety defect, but it destroys resale value. It is distinct from the interior pull-handle trim paint peeling issue.