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bmw540i1999
10-06-2003, 05:10 PM
I have a 1999 540i automatic with sport package. When coming to a slow stop or moving slowly in traffic (less than 5 MPH) my car will intermittently buck or jump forward. Sometimes it is so aggressive that I actually thought that I was hit by the car behind me. Any similar experiences out there or recommendations for correction?
marinakorp
10-07-2003, 10:18 AM
I have a 1999 540i automatic with sport package. When coming to a slow stop or moving slowly in traffic (less than 5 MPH) my car will intermittently buck or jump forward. Sometimes it is so aggressive that I actually thought that I was hit by the car behind me. Any similar experiences out there or recommendations for correction?


Yes, this happens quite often when the MAF sensor is going bad

I used to have to STAND on the brakes... felt like iT was shifting into first and lunging...had to be real cautious when coming behind someone, etc

I was throwing NO codes... went in for an update to the software to read the o2 sensor... a day or so later... lunge and the code was thrown

turned out to be the MAF sensor was bad... replaced and I have not had the problem since... if this is a CPO car... then covered... if not the part is 4-500 and is an easy DIY
The HACK
10-07-2003, 11:27 AM
Check your invoice to see if you bought the RCP (Rodeo Cowboy Package) along with the 540i. :eeps: :D
vatkens
10-10-2003, 12:51 PM
I’m with BMW of North America, LLC. I’m sorry to read about your concern about your 540i. If you and your BMW center would like our assistance, please phone us at (800) 831-1117, and please mention Reference #1-108313653 so that we can help you more efficiently.
bmw540i1999
10-11-2003, 07:44 AM
I’m with BMW of North America, LLC. I’m sorry to read about your concern about your 540i. If you and your BMW center would like our assistance, please phone us at (800) 831-1117, and please mention Reference #1-108313653 so that we can help you more efficiently.

Thanks for the response and the offer of assistance. I will be contacting my BMW service center to schedule an appointmment ASAP. I have a M5 and a 540i, this is the only issue I have had that is concerning from a safety perspective.