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BMW · Known Issues

2003-2016, 2019-2026 BMW Z4 Problems & Issues

2003-2016, 2019-2026 model years · 570+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 570+ owner reports, the 2003-2016, 2019-2026 BMW Z4 has 10 documented known issues, with 5 rated critical. The most serious are Retractable Hard Top Hydraulic Mechanism Failure ($500-$3,000 repair), B58 Coolant Expansion Tank Cracking ($150-$600 repair), 2012-2016 Z4 sDrive28i Water-Pump Connector Recall 24V-608, 2012 Z4 Electric Power-Steering Recall 12V-302 and N54 High Pressure Fuel Pump (HPFP) Failure - E89 Z4 sDrive35i/35is ($350-$900 repair). The most commonly reported issue is Retractable Hard Top Hydraulic Mechanism Failure with 350 owner reports. Across all issues with published estimates, repair costs range from $100 to $3,500. DIY maintenance guides at au7o.io.

In This Article

  • Z4 Cooling2
  • Z4 Engine4
  • Z4 Body/Panels2
  • Z4 Steering1
  • Z4 Electrical1
  • Recalls5
  • FAQ
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In This Article

  • Cooling2
  • Engine4
  • Body/Panels2
  • Steering1
  • Electrical1
  • Recalls5
  • FAQ

All 10 Known Issues

NHTSA Recalls5 recalls

ELECTRICAL SYSTEM:STARTER ASSEMBLY

BMW of North America, LLC (BMW) is recalling certain 2023-2024 Toyota Supra, 2022-2025 2 Series Coupe, 2021-2023 5 Series, 2022-2026 Z4, 2023-2024 4 Series Gran Coupe, 4 Series Convertible, 4 Series Coupe, 3 Series, 2021-2025 X4, and 2021-2024 X3 vehicles. Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.

Campaign #26V43800008/07/2026

VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

BMW of North Americal, LLC (BMW) is recalling certain 2023 8 Series Coupe (840i, 840i xDrive, M850i xDrive, M8), 8 Series Convertible (840i, 840i xDrive, M850i xDrive, M8), 8 Series Gran Coupe (840i, 840i xDrive, M850i xDrive, M8, Alpine B8 xDrive), 2 Series Coupe (230i, 230i xDrive, M240i xDrive, M2), and 2022-2023 Z4 sDrive30i, Z4 M40i vehicles. When the digital key is removed from the vehicle, the Electronic Control Unit (ECU) software may still allow the power windows and sunroof to be closed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 118, "Power-operated Window Systems."

Campaign #23V09900017/02/2023

ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY

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Frequently Asked Questions

What are the most common BMW Z4 problems?

According to Au7o's analysis of 570+ owner reports, the 2003-2016, 2019-2026 BMW Z4 has 10 documented issues. The most frequently reported are: Retractable Hard Top Hydraulic Mechanism Failure, B58 Coolant Expansion Tank Cracking, 2012-2016 Z4 sDrive28i Water-Pump Connector Recall 24V-608. Of these, 5 are rated critical and should be addressed promptly.

Is the BMW Z4 reliable?

The 2003-2016, 2019-2026 BMW Z4 has 10 known issues documented across 570+ owner reports. 5 issues are rated critical: Retractable Hard Top Hydraulic Mechanism Failure and B58 Coolant Expansion Tank Cracking and 2012-2016 Z4 sDrive28i Water-Pump Connector Recall 24V-608 and 2012 Z4 Electric Power-Steering Recall 12V-302 and N54 High Pressure Fuel Pump (HPFP) Failure - E89 Z4 sDrive35i/35is. 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 BMW Z4 problems?

Repair costs for known BMW Z4 issues range from $100 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Retractable Hard Top Hydraulic Mechanism Failure, typically costs $500-$3,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What year BMW Z4 is the most reliable?

Reliability varies across model years of the BMW Z4. 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 2003-2016, 2019-2026 BMW Z4 with 10 documented issues documented across 570+ owner reports.

What is the 2009-2016 BMW Z4 Retractable Hard Top Hydraulic Mechanism Failure?

The E89 Z4 retractable hard top relies on a complex hydraulic system with multiple cylinders, lines, and a pump to operate. The system can develop leaks at the hydraulic cylinder seals, hose connections, or the pump itself, causing the top to operate slowly, stop mid-cycle, or fa… Repairs typically run $500-$3,000. Severity: high.

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 570+ owner reports, NHTSA recalls, TSBs, and automotive forums.

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When Issues Typically Appear

B48/B58 Electric Water Pump & Thermostat Failure - G29 Z4
60K-80K
N54 High Pressure Fuel Pump (HPFP) Failure - E89 Z4 sDrive35i/35is
96K-144K
VANOS Solenoid & System Failure - E85/E89 Z4 (All Engines)
100K-150K
038K75K113K150K mi
Community reported
220 owners

The G29 Z4 with the B58 3.0L turbo inline-6 shares the common BMW plastic coolant expansion tank weakness. The tank develops hairline cracks from heat cycling and pressure, causing slow coolant leaks that can progress to sudden tank failure and overheating. The issue is exacerbated by the Z4's tighter engine bay packaging which increases under-hood temperatures.

This issue also affects: BMW 2 Series, BMW 5 Series, BMW 3 Series

Common Symptoms

  • Low coolant warning
  • Coolant smell
  • Visible cracks on expansion tank
  • Coolant puddle under car
  • Overheating warning
  • White residue around tank cap
  • Steam from engine bay

How to Fix

Replace the coolant expansion tank with an updated BMW part or aftermarket aluminum tank. Inspect the tank and cap regularly for signs of cracking, discoloration, or seepage. When replacing, also replace the cap and check all coolant hoses for brittleness. Flush and refill with BMW-approved coolant.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW G29 Z4 expansion tank 17138610652
    OEM17138610652

    Confirm VIN and physical tank/circuit before ordering; not yet approved for the issue's 2026 year..

    BMW Parts Deal
  • Genuine BMW G29 Z4 expansion tank 17138610653
    OEM17138610653

    Confirm VIN and physical tank/circuit before ordering; not yet approved for the issue's 2026 year..

    BMW Parts Deal
  • Genuine BMW G29 expansion-tank cap 17138665638
    OEM17138665638

    Confirm the cap belongs to the failed tank/circuit and replace only when damaged or required by the repair procedure..

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$150 - $600

Research This Issue

Based on 220 owner reports

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Community Reported
High ConfidenceVerified220 owner reportsLast reported by owners Mar 2026Reviewed Aug 2026

NHTSA campaign 24V-608 covers certain 2012-2016 BMW Z4 sDrive28i vehicles. Insufficient sealing can allow fluid into the electric water pump connector, creating a short circuit and fire risk. This is not a universal pump-wear diagnosis; applicability is VIN-specific.

This issue also affects: BMW 1 Series, BMW 2 Series, BMW 3 Series

Common Symptoms

  • Smoke from the engine compartment
  • Electrical or coolant-pump warning

How to Fix

Check the VIN for an open 24V-608 campaign. If open, an authorized BMW dealer inspects the water pump and connector, replaces them if necessary, and installs the protective shield free of charge. If smoke appears from the engine compartment, stop safely, switch off the vehicle, have occupants exit, move away from traffic and call emergency or roadside assistance; do not order a pump from this card.

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NHTSA Verified
High ConfidenceVerifiedReviewed Jul 2026

The E89 Z4 sDrive35i and 35is use the N54 3.0L twin-turbo engine which has a well-documented high pressure fuel pump (HPFP) failure. The original HPFP used a split-design where fuel goes to one half and lubrication to the other, separated by an internal O-ring that degrades prematurely causing loss of fuel rail pressure. When the HPFP fails, the engine cannot maintain fuel pressure under boost, causing immediate loss of power, misfires, and potential engine stalling at highway speeds - a serious safety concern. BMW issued TSB SI B13 03 09 acknowledging the defect and released multiple revised pump versions. Early 2009 Z4 35i models are most affected. The HPFP went through multiple revision indexes, with the latest being the most reliable.

This issue also affects: BMW 1 Series, BMW 3 Series, BMW 5 Series

Common Symptoms

  • Long cranking time before engine starts
  • Engine stalling at idle or during acceleration
  • Severe loss of power under boost (fuel pressure drops below 50 PSI)
  • Rough idle and engine misfires (codes 29D0, 29D2, 29E2)
  • Check engine light with fuel pressure fault codes
  • Car enters limp mode with reduced power
  • Fuel smell from engine bay due to injector overfueling at low pressure

How to Fix

Replace HPFP with latest revision Genuine BMW unit. The pump went through multiple revisions - ONLY install the latest version. Part number evolution: Original -> 13517592881 (Index 10, TSB fix) -> 13517616170 (latest revision, most reliable). Genuine BMW 13517616170 is the definitive fix ($350-$550 for pump). Replacement is straightforward DIY (1-2 hours) with basic tools. Also available as complete kit from FCP Euro with lifetime warranty. BMW extended warranty coverage to 10 years/120,000 miles under customer care package for original owners - check VIN eligibility. Replace low-pressure fuel sensor at same time (13537537319) as it may have been damaged by pressure fluctuations ($35-$55).

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW exchange high-pressure fuel pump 13517616170
    OEM13517616170

    Confirmed N54 high-pressure fuel-pump replacement. Fitment: 2009-2011 E89 Z4 sDrive35i and sDrive35is with N54 as cataloged; confirm VIN and rail-pressure diagnosis.

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$350 - $900

Research This Issue

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

The G29 Z4 sDrive30i (B48) and M40i (B58) continue BMW's pattern of electric water pump failures, though with improved longevity over the N52/N54 generation. The Pierburg electric water pump uses a plastic/composite impeller that is prone to cracking or deformation under prolonged thermal stress, especially in the turbocharged B48 and B58 engines that see elevated heat cycles. Internal bearings degrade over time, reducing coolant flow. The electronically-controlled thermostat is a common concurrent failure point. Failure tends to occur around 60,000-80,000 miles, with the B58 M40i being slightly more susceptible due to higher heat output. When the pump fails, overheating occurs rapidly with potential for catastrophic engine damage.

This issue also affects: BMW 1 Series, BMW 2 Series, BMW 5 Series

Common Symptoms

  • High or fluctuating temperature gauge readings
  • Engine overheating during long drives or at high speeds
  • Engine temperature warning light illuminated
  • Coolant loss with no visible external leak
  • Sudden activation of engine limp mode
  • Loud whirring noise from water pump area
  • Erratic temperature gauge behavior (thermostat failure)

How to Fix

Preventative replacement recommended at 60,000 miles. Always replace water pump and thermostat together - they share labor overlap and frequently fail concurrently. B48 sDrive30i: Water pump BMW 11518632586 ($300-$450), Thermostat BMW 11538685978 ($100-$150). B58 M40i: Water pump BMW 11518650986 ($350-$500), Thermostat BMW 11538685978 ($100-$150). Mishimoto offers performance water pump alternatives for B58 with improved impeller design. Replace 3 O-rings between thermostat and pump housing, plus 2 O-rings on coolant tube to head. Must replace water pump mounting bolts (torque-to-yield). Labor: 3-4 hours. FCP Euro lifetime warranty kits available. Also inspect plastic cylinder head coolant outlet adapter - known to shear off causing massive coolant leak.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Gates 41236 premium engine water pump
    OEM11518482250

    Confirm VIN, model year and OE number before ordering..

    eBay
  • Genuine BMW B58 water pump 11515B51A32
    OEM11515B51A32

    Confirm VIN because BMW supersessions and later-year production can vary..

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$500 - $1,500

Research This Issue

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Community Reported
Medium ConfidenceVerifiedLast reported by owners Feb 2026Reviewed Aug 2026

BMW SIB 01 02 12 identifies 2009-2010 E89 Z4 sDrive35i vehicles within a historical emissions-warranty extension for turbocharger failure caused by a wastegate defect. The bulletin does not make every rattle a failed turbocharger, include later sDrive35is/35i years, or support aftermarket parts as a universal remedy.

This issue also affects: BMW 1 Series, BMW 5 Series, BMW 3 Series

Common Symptoms

  • Wastegate-area rattle
  • Reduced boost
  • Engine malfunction warning

How to Fix

Confirm the VIN, engine, production date, DME faults, boost-control data and noise source using current BMW diagnostic information. Check VIN-specific coverage history with BMW, recognizing that the bulletin's time/mileage window may have expired. Do not replace a turbocharger, actuator or wastegate from this card without the required diagnosis.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • VTT N54 wastegate repair kit / rattle fix
    Cross-refVTT-N54-WF2

    Fitment: N54 twin-turbo wastegate hardware only, including E89 Z4 sDrive35i/35is after confirmed flapper/bushing wear.

    Vargas Turbo

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Research This Issue

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NHTSA Verified
High ConfidenceVerifiedReviewed Aug 2026

The VANOS (Variable Valve Timing) system on all E85 and E89 Z4 engines (M54, N52, N54, N20) suffers from solenoid failures, typically beyond 100,000 miles. The VANOS solenoids control oil flow to the variable camshaft timing adjustment units, and they fail through three primary modes: solenoid coil pack malfunction, sticking solenoid valves from oil varnish buildup, and deteriorating solenoid sealing plate rubber rings. When VANOS solenoids fail, the engine loses its ability to optimize valve timing, causing rough idle, power loss, poor fuel economy, and unusual engine noises. Z4-forum.com documents this as an extremely common issue across all E85 and E89 models. The good news: VANOS solenoids are inexpensive and relatively easy to replace - one of the simpler E85/E89 repairs.

This issue also affects: BMW 1 Series, BMW 2 Series, BMW 3 Series

Common Symptoms

  • Rough or uneven idle with RPM fluctuations
  • Noticeable loss of power during acceleration
  • Engine misfires causing hesitation or jerking
  • Rattling, ticking, or clicking noises from engine (especially at startup)
  • Increased fuel consumption (10-15% higher than normal)
  • Check engine light with VANOS-related fault codes (2A82, 2A87, 2A9A, 2A9F)

How to Fix

Replace VANOS solenoids - inexpensive and straightforward repair. M54 (E85 2003-2005): 2 solenoids required, BMW 11361707323 ($35-$65 each). N52 (E85 2006-2008 / E89 2009-2011 28i): 2 solenoids, BMW 11367585425 ($40-$70 each). N54 (E89 35i/35is): 2 solenoids, BMW 11367585425 ($40-$70 each). N20 (E89 sDrive28i 2012-2016): 2 solenoids, BMW 11367585425 ($40-$70 each). Labor: under 1 hour for experienced mechanic, 2-3 hours DIY. Replace all solenoids at once even if only one has failed - the others are same age and will fail soon. Also replace VANOS solenoid O-rings and sealing plates during service. Clean VANOS system with Beisan Systems VANOS cleaning procedure for best results.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Beisan BS001 double-VANOS seals repair kit

    M54 internal double-VANOS seal repair after confirmed seal degradation. Confirm engine and internal VANOS diagnosis before ordering..

    Beisan Systems
  • Genuine BMW N52/N54 VANOS solenoid valve 11367585425
    OEM11367585425

    Confirmed N52/N54 intake or exhaust VANOS solenoid replacement. Replace only the failed/test-confirmed unit or both when the repair decision specifically calls for it.

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$100 - $500

Research This Issue

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026
Community reported
350 owners

The E89 Z4 retractable hard top relies on a complex hydraulic system with multiple cylinders, lines, and a pump to operate. The system can develop leaks at the hydraulic cylinder seals, hose connections, or the pump itself, causing the top to operate slowly, stop mid-cycle, or fail to operate entirely. The issue is more common in hot climates where hydraulic fluid degrades faster.

Common Symptoms

  • Top moves slowly
  • Top stops mid-cycle
  • Top won't open or close
  • Hydraulic pump runs but top doesn't move
  • Visible fluid leak in trunk area
  • Warning message for convertible top
  • Top makes grinding noise during operation

How to Fix

Diagnose the leak location and replace the failed component. Common failure points are the main hydraulic cylinders (left and right), the hydraulic pump motor, and the flexible hoses. The hydraulic fluid should be flushed and replaced with BMW-approved CHF 11S fluid. A full system bleed is required after any repair.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW retractable-top hydraulic fluid 54340394395
    OEM54340394395

    Correct fluid after an E89 hardtop hydraulic repair. Fitment: 2009-2016 BMW Z4 E89 retractable-hardtop hydraulic system as cataloged.

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$500 - $3,000

Research This Issue

Based on 350 owner reports

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Community Reported
High ConfidenceVerified350 owner reportsLast reported by owners Mar 2026Reviewed Aug 2026

The E85 Z4 soft top uses an electrically-driven hydraulic pump motor (BMW 54347193448) to raise and lower the convertible top. The pump motor is located behind the seats in an area prone to water intrusion, causing corrosion of the motor housing, electrical connections, and internal components. Water enters through clogged drain holes at the top (too narrow from factory) and poorly sealed rubber bungs at the bottom. The pump motor can also fail electrically from carbon dust buildup on internal brushes. When the pump fails, the top cannot be raised or lowered - a serious problem if caught in rain with top down. BMW quotes full removal of convertible top assembly to access the pump, making dealer repair extremely expensive.

Common Symptoms

  • Convertible top motor whirs but top does not move
  • Top moves partway then stops mid-operation
  • No sound at all when top switch is pressed (complete pump failure)
  • Slow or sluggish top operation (early warning sign)
  • Hydraulic fluid leaks visible behind seats or in trunk
  • Warning messages about convertible top on dashboard

How to Fix

Replace hydraulic pump motor assembly (BMW 54347193448 / supersedes 54347119633). OEM Genuine BMW pump: $800-$1,200. Aftermarket alternatives available on Amazon for $150-$300 but quality varies significantly. Dealer labor is $1,500-$2,500+ as BMW procedure requires full top removal. ZRoadster.org members have documented a motor relocation to the boot/trunk area which allows much easier future access. Hydraulic fluid: use Aral Vitamol ZHM or BMW 54340394395 hydraulic oil. PREVENTION: Clean drain holes annually, ensure rubber bungs are properly seated, and check for water intrusion in pump area at every service. Some owners have had success with pump motor rebuilds from roofmotors.co.uk ($300-$500) but quality of rebuilds varies.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW E85 Z4 hydro unit 54347193448
    OEM54347193448

    Confirmed convertible-top hydraulic pump/motor replacement.

    BMW Parts Deal
  • Genuine BMW convertible-top hydraulic fluid 54340394395
    OEM54340394395

    Correct hydraulic fluid for an opened/repaired E85 top circuit. Fitment: 2003-2008 E85 Z4 hydraulic top and other cataloged BMW convertible systems; use only after the leak or failed component is repaired and follow the BMW fill/bleed pr…

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$500 - $3,500

Research This Issue

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

NHTSA campaign 12V-302 covers a small VIN-specific population of 2012 BMW Z4 vehicles. An incorrectly manufactured capacitor in the electric power-steering assist control module can cause current variations and sudden loss of steering assistance; manual steering remains but requires greater effort.

Common Symptoms

  • Electric power-steering warning
  • Audible warning
  • Sudden increase in steering effort

How to Fix

Check the VIN for an open 12V-302 campaign. If open, an authorized BMW dealer replaces the steering-assistance module free of charge. If the steering warning and audible alert occur, maintain control, reduce speed, stop safely and arrange dealer or roadside assistance; do not replace a steering rack from this card.

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NHTSA Verified
High ConfidenceVerifiedReviewed Jul 2026

The E85 Z4 power window regulators are prone to premature failure, causing windows to operate unevenly, stop midway, make grinding/clicking noises, or fail to move entirely. The cable-driven regulator mechanism has thin steel cables that fray and snap, and the plastic guide rollers crack and break. This is particularly problematic on a convertible where window operation is essential for top operation - the windows must fully lower before the soft top can fold. Driver side fails more frequently due to higher usage. Z4-forum.com reports this as one of the most common E85 ownership complaints. Dealer repair quotes $700+ with labor, but repair kits are available for under $20 and full replacement regulators are $150-$250.

Common Symptoms

  • Window moves unevenly or tilts during operation
  • Grinding, clicking, or snapping noises when operating window
  • Window stops midway and will not continue up or down
  • Window drops into door panel and will not raise
  • Convertible top gives error because window cannot fully lower
  • Window operates very slowly compared to normal speed

How to Fix

Option 1 (Budget): Window regulator repair kit - replacement cables and rollers for ~$18-$25 from eBay/Amazon (BWR974 for left/driver side). Requires removing door panel and threading new cables through existing regulator frame. DIY-friendly with Z4-forum.com guides. Option 2 (Recommended): Full window regulator replacement. Driver side: BMW 51337198909 ($180-$280 OEM, $80-$150 aftermarket). Passenger side: BMW 51337198910 ($180-$280 OEM, $80-$150 aftermarket). Labor: $200-$400 at independent shop, $500-$700+ at dealer. DIY: 2-3 hours with door panel removal guide from Pelican Parts. ZRoadster.org recommends full replacement over repair kit for long-term reliability.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • Genuine BMW E85/E86 front-left window regulator 51337198909
    OEM51337198909

    Confirm the regulator rather than the motor, guides or adjustment is the failed component..

    BMW Parts Deal
  • Genuine BMW E85/E86 front-right window regulator 51337198910
    OEM51337198910

    Confirm the regulator rather than the motor, guides or adjustment is the failed component..

    BMW Parts Deal

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$100 - $700

Research This Issue

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Community Reported
Medium ConfidenceVerifiedReviewed Aug 2026

BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. The engine starter relay may corrode, causing the relay to overheat and short circuit.

Campaign #25V63600023/09/2025

ELECTRICAL SYSTEM:STARTER ASSEMBLY

BMW of North America, LLC (BMW) is recalling certain 2021-2023 Toyota Supra, 2022-2023 2 Series Coupe, 2021-2024 5 Series (xDrive), 2021-2022 Z4, 2022-2024 4 Series (Gran Coupe), 2021-2024 4 Series (Convertible and xDrive Convertible), 2021-2023 4 Series (Coupe), 2021-2024 3 Series, 2021-2023 X4, 2021-2024 X3 vehicles. Please see the recall report for a complete list of all models. The engine starter may overheat and catch fire due to wear on an internal component.

Campaign #26V05600030/01/2026

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.

Campaign #23V82100006/12/2023

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

get a full repair guide

What is the 2019-2026 BMW Z4 B58 Coolant Expansion Tank Cracking?

The G29 Z4 with the B58 3.0L turbo inline-6 shares the common BMW plastic coolant expansion tank weakness. The tank develops hairline cracks from heat cycling and pressure, causing slow coolant leaks that can progress to sudden tank failure and overheating. The issue is exacerbat… Repairs typically run $150-$600. Severity: high.

What is the 2012-2016 BMW Z4 2012-2016 Z4 sDrive28i Water-Pump Connector Recall 24V-608?

NHTSA campaign 24V-608 covers certain 2012-2016 BMW Z4 sDrive28i vehicles. Insufficient sealing can allow fluid into the electric water pump connector, creating a short circuit and fire risk. This is not a universal pump-wear diagnosis; applicability is VIN-specific. Severity: high.

What is the 2012 BMW Z4 2012 Z4 Electric Power-Steering Recall 12V-302?

NHTSA campaign 12V-302 covers a small VIN-specific population of 2012 BMW Z4 vehicles. An incorrectly manufactured capacitor in the electric power-steering assist control module can cause current variations and sudden loss of steering assistance; manual steering remains but requi… Severity: high.

What is the 2009-2011 BMW Z4 N54 High Pressure Fuel Pump (HPFP) Failure - E89 Z4 sDrive35i/35is?

The E89 Z4 sDrive35i and 35is use the N54 3.0L twin-turbo engine which has a well-documented high pressure fuel pump (HPFP) failure. The original HPFP used a split-design where fuel goes to one half and lubrication to the other, separated by an internal O-ring that degrades prema… Repairs typically run $350-$900. Severity: high.

What is the 2019-2025 BMW Z4 B48/B58 Electric Water Pump & Thermostat Failure - G29 Z4?

The G29 Z4 sDrive30i (B48) and M40i (B58) continue BMW's pattern of electric water pump failures, though with improved longevity over the N52/N54 generation. The Pierburg electric water pump uses a plastic/composite impeller that is prone to cracking or deformation under prolonge… Repairs typically run $500-$1,500. Severity: medium.

What is the 2003-2008 BMW Z4 Convertible Top Hydraulic Pump Motor Failure - E85 Z4?

The E85 Z4 soft top uses an electrically-driven hydraulic pump motor (BMW 54347193448) to raise and lower the convertible top. The pump motor is located behind the seats in an area prone to water intrusion, causing corrosion of the motor housing, electrical connections, and inter… Repairs typically run $500-$3,500. Severity: medium.

What is the 2009-2010 BMW Z4 2009-2010 Z4 sDrive35i N54 Wastegate Diagnosis?

BMW SIB 01 02 12 identifies 2009-2010 E89 Z4 sDrive35i vehicles within a historical emissions-warranty extension for turbocharger failure caused by a wastegate defect. The bulletin does not make every rattle a failed turbocharger, include later sDrive35is/35i years, or support af… Severity: medium.

What is the 2003-2016 BMW Z4 VANOS Solenoid & System Failure - E85/E89 Z4 (All Engines)?

The VANOS (Variable Valve Timing) system on all E85 and E89 Z4 engines (M54, N52, N54, N20) suffers from solenoid failures, typically beyond 100,000 miles. The VANOS solenoids control oil flow to the variable camshaft timing adjustment units, and they fail through three primary m… Repairs typically run $100-$500. Severity: medium.

What is the 2003-2008 BMW Z4 Power Window Regulator Failure - E85 Z4?

The E85 Z4 power window regulators are prone to premature failure, causing windows to operate unevenly, stop midway, make grinding/clicking noises, or fail to move entirely. The cable-driven regulator mechanism has thin steel cables that fray and snap, and the plastic guide rolle… Repairs typically run $100-$700. Severity: low.