Electrical systemPart report
2018 BMW 640I Electrical system Problems
- Complaints
- 1about this part
- Share
- 20%of 5 total for the year
- Median mileage
- 18,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 2018 BMW 640I, 20% of the 5 complaints for this model year. Where a mileage was given, the median is 18,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Related service bulletins
- 11028928Feb 11, 2026A situation may occur where the front passenger seat is not occupied; however, a “fasten seat belt” warning and a front passenger seat air bag deactivation message appears. If…
- 11017101Apr 18, 2025The Supplemental Restraint Systems (SRS) Front Passenger’s Seat Occupancy Capacitive Interior Sensor (CIS) Mat for defects in materials and/or workmanship that causes a false…
- 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…
- 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…
- 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…
- 10235205Mar 1, 2023The 3G network in the US has been shut down. This means that only the 4G network will be available. In the 4G network, voice calls will be transferred via the Voice over LTE…
Electrical system: other model years
Other parts of the 2018 BMW 640I
Forward collision avoidance
2 complaintsEngine
1 complaintsLane departure
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaints
2 complaintsEngine
1 complaintsLane departure
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2018 BMW 640I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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