2021 BMW 540I Electrical system Problems
- Complaints
- 2about this part
- Share
- 22%of 9 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 2021 BMW 540I, 22% of the 9 complaints for this model year. 1 recall campaign on record is filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“2021 Bmw 540I. Consumer writes in regards to multiple defects due to battery management issue. The consumer stated the vehicle has experienced mulitple occasions of failures with the breaking system. The driver had to press the pedal to the floor in order to stop the vehicle. The emergency braking system engaged without warning, the autostart engaged independtly, and lighting/speaker/sunroof malfunction.”
NHTSA complaint #11449238, filed 2022-01“Starter engine failure. Car failed to start multiple times. Major safety hazard that can cause a short circuit, melt wiring harnesses, and spark an engine bay fire posing an immediate threat to life. Problem was inspected and confirmed by a dealer. Multiple waring lamps and messages appeared. Dealer report stated: STARTER MOTOR FAULTY. ENGINE ELECTRICAL SYSTEM CONCERN: C/S: REPEAT START ATTEMPT INTERMITTEN WARNING LIGHTS. Please issue recall for the safety of all drivers.”
NHTSA complaint #11749530, filed 2026-07Related recalls
- 20V761000Dec 9, 2020BMW of North America, LLC (BMW) is recalling certain 2021 M340i xDrive, M440i xDrive Coupe, 530i, 530i xDrive, 540i, 540i xDrive, 740Li, 740Li xDrive, 840i…Covers: BMW 540I 2021, X5 2021, X6 2021 +6 more
Related service bulletins
- 10249437Jan 16, 2024The basic conditions for initializing the power windows are not met.
- 10249027Jan 11, 2024The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery…
- 10249032Jan 5, 2024The Central Information Display goes black intermittently due to resets of the Head Unit (HU-H3). FaultB7F8F9 ÃÂâÃÂÃÂÃÂàÃÂâÃÂÃÂÃÂÃÂHU-H…
- 10245422Nov 22, 2023Customers may state that the alarm system (DWA) is not active after locking their unoccupied vehicle. Depending on the vehicleâÂÂs equipment and settings, no acoustic or…
- 10239611Jun 1, 2023Headlight check control (CC) message 128 "High beam headlight failure" is displayed. The following fault codes are stored during a vehicle test: 80419A - Left high-beam…
- 10239603Jun 1, 2023BMW AG has issued an Emissions Recall (effective March 17, 2023) on a certain Model Year 2021 - 2023 BMW vehicles that were produced between June 16, 2020, and December 13, 2022…
- 10239599Jun 1, 2023With the introduction of the BMW Remote Software Upgrade, all Service Pack 18 vehicles and partial Service Pack 15 vehicles may receive new functionality or modifications in…
- 10238090May 1, 2023After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
- 10238083May 1, 2023Due to a software error, the vehicle sporadically does not achieve sleep mode. As a result, the 12-volt battery becomes discharged and may cause a no-start condition.
- 10236236Apr 1, 2023Issues with the various functions of the camera-based driver assistance systems (KAFAS system) can possibly lead to following customer complaints: KAFAS camera system deactivates…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 1 | 20% |
| 2022 | 1 | 17% |
| 2021 | 2 | 22% |
| 2019 | 1 | 8% |
| 2018 | 4 | 13% |
| 2017 | 4 | 20% |
| 2003 | 1 | 14% |
| 2002 | 5 | 42% |
| 2001 | 5 | 33% |
| 2000 | 8 | 26% |
| 1999 | 4 | 18% |
| 1997 | 3 | 11% |
| 1995 | 1 | 10% |
Other parts of the 2021 BMW 540I
3 complaintsTransmission and drivetrain
3 complaintsEngine
1 complaintsForward collision avoidance
1 complaintsSeat belts
1 complaintsSteering
1 complaintsWheels
1 complaints
← All problems reported for the 2021 BMW 540I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology