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Electrical systemPart report

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 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2025350%
2022225%
2021640%
2019313%
2018514%
2017520%

Other parts of the 2018 BMW 430I

Engine
14 complaints
Engine cooling
8 complaints
Seat belts
4 complaints
Other or unknown
3 complaints
Seats
3 complaints
Air bags
2 complaints
Brakes
2 complaints
Fuel system
2 complaints
Transmission and drivetrain
2 complaints
Back-over prevention (rear camera)
1 complaints
Lane departure
1 complaints
Tires
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