2018 BMW 430I Electrical system Problems
- Complaints
- 5about this part
- Share
- 14%of 36 total for the year
- Median mileage
- 66,690miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2018 BMW 430I, 14% of the 36 complaints for this model year. Where a mileage was given, the median is 66,690 miles. 1 of these say a crash was involved, according to the filers.
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.
“While parked, car went on with gear shift failure with a note to take in for service, no lights on gear shift. Restarted car with it functioning as normal. 2 hours later, doors unlock on its own and all windows, sunroof also open on its own while in motion. Not exactly sure what is the defect as the car seems to be out of control from the driver/passenger.”
NHTSA complaint #11143083, filed 2018-10, 7,388 miles“I pulled out onto Southside Blvd. My brakes failed, my driver’s front of the car hit a Waste Management garbage truck right back tire and cut the sidewall of the tire. The engine was racing, the truck pulled off the road, and I had sudden unintended acceleration. I immediately turned into a strip center and my car was racing through the strip center, the brakes were not working, the car controls were not working, and I turned the ignition switch off and the car stopped. The car had to be towed. …”
NHTSA complaint #11630502, filed 2024-12“I am reporting a potential safety defect involving water intrusion into the amplifier location on my BMW F33. According to the dealer's diagnosis, water entered the area containing the amplifier, causing failure of the audio system and the loss of audible safety warnings and alerts. As a result, the vehicle no longer provides audible safety notifications that are intended to warn the driver of potentially hazardous conditions. I believe this condition is caused by a design defect that allows water intrusion and creates an unreasonable safety risk. …”
NHTSA complaint #11754952, filed 2026-08“The contact owns a 2018 BMW 430I. The contact stated that the vehicle was taken to a local dealer for routine service, and the vehicle was diagnosed and the contact was informed that the water pump was leaking and needed to be replaced. The low coolant level warning light was illuminated. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 24V608000 (ENGINE AND ENGINE COOLING, ELECTRICAL SYSTEM) as a possible cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 66,690.”
NHTSA complaint #11680742, filed 2025-08, 66,690 miles“The contact owns a 2018 BMW 430I. The contact stated that while the vehicle was parked, the contact discovered that there was an unknown liquid leaking underneath the vehicle. The coolant warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed that there was a leak in the water pump and that the water pump needed to be replaced. The contact researched and became aware of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling; Electrical System); however, the VIN was not included. The vehicle was not repaired. …”
NHTSA complaint #11649102, filed 2025-03, 74,000 milesRelated service bulletins
- 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…
- 10238090May 1, 2023After programming the head unit (HU-H2), activating the FSC (German word Freischaltcode) Enabling Codes repeatedly fails.
- 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…
- 10235202Mar 1, 2023Exterior rear lights do not work.
- 10225115Sep 1, 2022Customer is unable to power up or charge accessories through a plug adapter inserted in the front 12-volt power socket plug. Alternatively, it will only operate when constant…
- 10218384Jun 1, 2022Vehicle cannot be opened or closed using comfort access, engine start is not possible, and the vehicle may not start when placing the key against the steering column. Note…
- 10218375Jun 1, 2022Due to an incorrect terminal assignment, the compressor circuit is protected with a 30 Amp fuse (slot F227). A 40 A fuse (slot F229) is required for suitable circuit protection.
- 10214990May 1, 2022The Headunit High (HU-H), also called NBT, began replacing the Car Information Computer (CIC) on certain MY2013 vehicles with option 609 (as of 7/2012 production). This uses map…
- 10200249Jun 1, 2021The discontinuation of 3G cellular communication for Combox, TCB 3G and ATM 3G (Telematics ControlModule) can no longer be supported by the cellular network provider starting…
- 10186227Dec 1, 2020?A/C COOLING INTERMITTENT REDUCTION OF AIR FLOW: Customer may complain of reduced air flow when the air conditioning system is operated for an extended time, usually longer than…
Electrical system: other model years
Other parts of the 2018 BMW 430I
14 complaintsEngine cooling
8 complaintsSeat belts
4 complaintsOther or unknown
3 complaintsSeats
3 complaintsAir bags
2 complaintsBrakes
2 complaintsFuel system
2 complaintsTransmission and drivetrain
2 complaintsBack-over prevention (rear camera)
1 complaintsLane departure
1 complaintsTires
1 complaints
← All problems reported for the 2018 BMW 430I
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