2004 BMW 545I problems & reliability
43 owner complaints filed with NHTSA for the 2004 BMW 545I. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
3 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2004 BMW 545I vehicles were involved in 3 fatal crashes with 2 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags → | 18 | 42% |
| Electrical System → | 12 | 28% |
| Engine → | 10 | 23% |
| Power Train | 8 | 19% |
| Seat Belts | 5 | 12% |
| Electronic Stability Control (esc) | 4 | 9% |
| Steering | 4 | 9% |
| Exterior Lighting | 3 | 7% |
| Seats | 3 | 7% |
| Service Brakes | 3 | 7% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 99,283 miles (middle 50% between 82,890 and 123,495 miles), based on 38 complaints that included mileage.
Complaints by incident year
What owners report
“My car has the passenger restraint system warning everytime I start my car. The air bag recall is by takata is for the 2003 545i model. My car was manufactured in sep of 2003 with those takada airbags.”
Seat Belts · filed Feb 4, 2020
“Electrical wiring in headlights are disintegrating. The shielding is dry rotting and flaking off nearly every wire in both headlights causing them to malfunction during driving. Lights will cut off randomly. I'd imagine the wires are shorting out.”
Electrical System · filed Nov 28, 2019
“Bare wires inside the headlight housing, these are hid lights made by hella for bmw they are oem. When contacting bmwna they say that's not how they make there lights and blame heat and the car not being maintained at a bmw dealership, well the rest of the wiring on the car is just fine even the wires that come in…”
Exterior Lighting · filed Feb 7, 2019
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
48 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2004 BMW 545I. The 10 most recent:
The basic conditions for initializing the power windows are not met.
B510819 · Service Bulletin/Repair Instructions · issued Jan 16, 2024
The 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. This document covers important information…
B611305 · Service Bulletin/Repair Instructions · issued Jan 11, 2024
Engine will crank but not start. There is no communication with the integrated fuel module (TFE) whendiagnosing with ISTA. The following two fault codes will be stored in the DME: 032B43 - Low fuel pressure system…
B160623 · Service Bulletin/Repair Instructions · issued Dec 20, 2023
Customers may state that the alarm system (DWA) is not active after locking their unoccupied vehicle. Depending on the vehicleâ  s equipment and settings, no acoustic or optical confirmation (folding the…
B653423 · Service Bulletin/Repair Instructions · issued Nov 22, 2023
Diagnosis of Compound Brake System Complaints in M Vehicles: 1. Visible cracks are caused by high thermal stresses during rapid heating and cooling of the brake discs. Braking from high speed with cold brake components…
B340414 · Service Bulletin/Repair Instructions · issued Apr 1, 2021
Discharged Battery Energy Diagnosis Must Be Performed: The 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…
B611305 · Service Bulletin/Repair Instructions · issued Oct 1, 2020
Power Reduction FC2A82 Intake VANOS and/or FC2 A87 Exhaust VANOS Camshaft Fault: The "Service Engine Soon" (MIL) lamp is illuminated and engine power reduction is perceived. This situation can occur after driving for…
B110208 · Service Bulletin/Repair Instructions · issued Apr 1, 2020
Various Electrical Problems Caused by Water Ingress. Water ingress into the luggage compartment may cause various electrical problems or faults associated with the MPM (Micro Power Module); PDC (Park Distance Control)…
611306 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:
B650709 · Service Bulletin/Repair Instructions · issued Jun 1, 2018
NAVIGATION SYSTEM: REPORTING MISSING OR INCORRECT ROAD MAP DATA: The route guidance is inaccurate and therefore irritating to the customer; or it is not possible to locate certain addresses, for instance:
B650709 · Service Bulletin/Repair Instructions · issued May 1, 2018
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2004 BMW 545I in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2004 BMW 545I?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 99,283 miles — budget accordingly if the car is approaching that mileage.