Electrical complaints by model year
Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
What owners report
I purchased said automobile from my neighbor for my son to drive. I figured it was a good car to buy because it was serviced by Hendrick BMW (Charlotte, NC) only and regularly. BMW's also have a reputation for being safe as well as reputable so this also weighed into my decision. Fast forward 18 months. The passenger rear brake bulb went out. We replaced the bulb, it worked for a short time, then went out. We replaced the bulb again. This time it didnt work. About a week later the front passenger side head light went out, then the other side. We took it to Hendrick BMW for repair. Hendrick has told us the car wiring basically needs to be replaced due to the protective coat wearing off and corroding the bare wire underneath. The headlights/ brake light will also need to be replaced due to the corrosion blowing out the bulb. …
We would like the NHTSA to be aware that myself and a few colleagues own BMW and have experienced this issue. BMW has purposely built these vehicles to fail after the warranty period when a few months after the 100,000 mile warranty we began having problems specifically with the seals around all all windows including windshield and rear window as well as the seals around the trunk, however at the bottom of the trunk BMW keeps a main component board underneath the spare tire , once the seals begin to fail it causes water and moisture to gain access to this compartment and cause the board to ignite and catch fire and cause car to go crazy with acceleration and deceleration, why place a main component in this location with 10 feet of extra wire and no drain, I would also like to point out all BMW's of the same year experience m melting of the plastic interior parts and the paint to …
I was on my way to work and had driven only 4 1/2 miles at 6:55 am on Thursday, August 15, 2019. I was about 1/2 from work on a city street when smoke began coming out the air vents and steering column. A smell of plastic, electrical filled the car and I pulled into the nearest place when the smoke was quickly increasing. My son and I jumped out of the car and called 911. The fire department arrived almost immediately, and upon pulling up, before they could get out of the truck, the driver's side curtain airbag exploded, the firemen heard the explosion. By the time they pulled their hoses and lifted the hood, smoke was heavily coming from the car. When the airbag exploded, a large piece of plastic shrapnel was blown to the passenger side of the car and stuck between the windshield and the window and stuck into the edge windshield frame. …
Tl* the contact owns a 2006 BMW 525-I. The contact stated that the vehicle was parked with the engine turned off, smoke started emerging from the engine compartment. The hood was opened and a fire was discovered coming from the passenger side. The fire department was called and they extinguished the fire. The police was present and a report was issued. The vehicle was not taken to the dealer for a diagnostic. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 307,726.
I am encountering persistent issues with my 2005 BMW 525i. Despite having replaced several critical components, including the ignition coils, spark plugs, mass air flow sensor, and throttle body sensors, the vehicle continues to experience performance problems, specifically failing to advance beyond the fourth cylinder when driving uphill. After conducting numerous diagnostic tests, I have concluded that there may be an air leak in the intake manifold. Additionally, after prolonged use under these conditions, the positive battery cable from the trunk has shown signs of overheating, evidenced by smoke, which I suspect is related to repeated uphill driving. While the vehicle performs adequately on flat surfaces, it exhibits hesitation and jerking once it surpasses the fourth cylinder.
On April 11, 2015. I was taking my vehicle to my mechanic to get it serviced after sitting all winter. As I was driving I noticed smoke coming from the rear of the vehicle. I pulled over, could not locate the source. I continued to my mechanic. Once there we opened the trunk, we noticed and smelled something burning. We took out the tire and noticed water in the wheel well, which made an electrical component sparking, smoking and on fire. I had the vehicle towed to BMW. They stated the water damaged the micro power module. BMW paid for the repairs, and relocated the module away from the wheel well. I feel where it was placed previous was very dangerous. If I had any combustible item in my trunk my BMW would have fully caught fire. BMW should recall all vehicle and relocation any electrical components that can be damaged by water, possibly catch fire. This is very dangerous
I was driving on my way to work and started smelling something burning. All electrical warning lights started lighting up the dash and then displays go blank. Passenger compartment was filling up with smoke coming from under glove box. I pulled over and called fire department. We disconnected battery and took to BMW. They said micro-processor located in spare tire storage area had shorted out due to water. I don't carry coolers and don't leave my trunk open when it rains. How did water get there. Bulletins show that sunroof drains get clogged and water gets into trunk and shorts out electrical. Service bulletin says if this happens, customer pay but move electrical to where it can't get wet. So BMW knows it's a problem and can cause a fire but doesn't care to cover repair. Now I'm stuck with $1000 repair for micro-processor just to be able to tell what else is burned up. …
Tl* the contact owned a 2004 BMW 525i. The contact stated that the vehicle caught fire and blew up in the garage without warning. The fire department was contacted and stated that the fire was started by the battery cable. A fire report was filed. The contact sustained injuries that required hospitalization. The vehicle was totaled and the contact's home was damaged extensively. The dealer was not contacted. The manufacturer was contacted and stated that it was not their responsibility. Six months prior to the fire, the vehicle was taken to the dealer (chapman BMW in phoenix, ar) where a recall repair of the battery cable was performed. The recall information was lost in the fire. The failure mileage was 160,000.
Frequently asked questions
Which BMW 525i years have electrical problems?
By NHTSA complaints, the 2004 (21), 2007 (14), 2003 (8), 2006 (7) and 2001 (6) model years. Electrical complaints make up 25% of all complaints for the 2004.
Is there a recall for BMW 525i electrical problems?
No. NHTSA lists no electrical system recall for any BMW 525i model year. A widespread problem may still be covered by an extended warranty or a manufacturer service bulletin, so ask a dealer.
At what mileage do BMW 525i electrical problems start?
Across all years, half of the complaints with a recorded mileage happened before about 118,000 miles; 25% happened before 50,000 miles.
What part fails most often?
Owners most often name the ignition (4 mentions), followed by the wiring › fuses and circuit breakers (2).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.