1997 BMW 540I engine and engine cooling problems
13 owner complaints filed with NHTSA name the engine and engine cooling on the 1997 BMW 540I — 48% of all complaints for this model year.
What owners report
“I exchanged the lambda sensor of my car a couple of months ago. Suddenly my mileage went down and I started an error search. Since I was doing a couple of other things on the car I didn't come up with the sensors up front. Updated 11/16/10 *bf updated 03/23/11 *bf so when it came to them I…”
filed Oct 25, 2010
“1997 bmw 540i fuse to the fuel injector blew out.***no answer required*** *mr the vehicle would all of a sudden die when in motion due to the blown fuse(s) to the injector. The thermostat temperature sensor had an internal short which caused the wire to melt and blew the fuse. The sunroof was…”
filed Jul 22, 2005
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
SERVICE ACTION: PROGRAM DME (FOR O2 SENSORS): Due to DME software error, the following oxygen sensors plausibility fault codes may be stored in DME 5.2.1 control module:
B122817 · Service Bulletin/Repair Instructions · issued Dec 1, 2017
Engine and Engine Cooling problems in other 540I years
| Year | Reports | Share |
|---|---|---|
| 2000 540I | 8 | 26% |
| 1999 540I | 5 | 23% |
| 1998 540I | 16 | 62% |
Other reported problem areas on the 1997 BMW 540I
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.