Zambee500
Veteran Member
This is new to me. Got the ESP/ASR light on dash (yellow exclamation point inside triangle with circle-arrow around it all) illuminate a couple of times and then go back out.
Codes are 04123 (lateral acceleration sensor) and 01542 (yaw rate sensor).
Symptoms were non-existent until one instance that about scared me out of my pants. As I was driving about 40 or 45 mph around a very gentle curve in left lane the ESP activated and applied braking that was pulsating (ABS?) to front-right wheel and about yanked me into the right lane. Fought through it for a second or two (if that, but felt much much longer) and it stopped. So I turned off ESP and continued drive home a mile or two.
Hooked it up to scanner with mechanic and went for a drive. All four wheels reading same speed. But oddly, at a stop idling it was showing front right wheel was moving, albeit at very low speed compared to readouts when actually moving. But it wasn't at zero like other 3 wheels.
I understand there was a break in B5/B5.5 and the two sensors were combined into a single Bosch sensor located under the center of back seat bottom. Part # 8E0 907 637A. Mechanic says sensor needs R&R, but the damn thing costs close to $1000 new. Gonna try a used part first to see if that solves the issue.
But thought I'd check in here with the B5.5 experts. Haven't seen much online about this problem, so just wondering what you fine folks might say with recommendations. These cars often have strange gremlins, so just wondering if there is somewhere else that should be checked that might not ordinarily come to mind.
Thanks.
Codes are 04123 (lateral acceleration sensor) and 01542 (yaw rate sensor).
Symptoms were non-existent until one instance that about scared me out of my pants. As I was driving about 40 or 45 mph around a very gentle curve in left lane the ESP activated and applied braking that was pulsating (ABS?) to front-right wheel and about yanked me into the right lane. Fought through it for a second or two (if that, but felt much much longer) and it stopped. So I turned off ESP and continued drive home a mile or two.
Hooked it up to scanner with mechanic and went for a drive. All four wheels reading same speed. But oddly, at a stop idling it was showing front right wheel was moving, albeit at very low speed compared to readouts when actually moving. But it wasn't at zero like other 3 wheels.
I understand there was a break in B5/B5.5 and the two sensors were combined into a single Bosch sensor located under the center of back seat bottom. Part # 8E0 907 637A. Mechanic says sensor needs R&R, but the damn thing costs close to $1000 new. Gonna try a used part first to see if that solves the issue.
But thought I'd check in here with the B5.5 experts. Haven't seen much online about this problem, so just wondering what you fine folks might say with recommendations. These cars often have strange gremlins, so just wondering if there is somewhere else that should be checked that might not ordinarily come to mind.
Thanks.