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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 04-01-2014, 05:06 AM
diggyd357's Avatar
diggyd357 diggyd357 is offline
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Location: Louisiana
Join Date: Sep 2012
Posts: 474
Mein Auto: 97 528I
ABS & ASC lights, CEL w/ code for wheel sensor BUT...

So about a month ago I hit this moon crater of a pot hole while turning into a Taco Bell. My ABS began kicking in vibrating the petal every time I hit the brakes. This went on most of the way home , but NO warning lights. Over the next few days the vibrating in the pedal (ABS) slowy dissipated and things seemingly returned to normal. Then I started getting the ABS & ASC lights on , but would go off. I would notice when I first started my trip each morning the ASC light would flicker and would seem to be manipulated by turning the wheel slightly left. After a minute or two though regardless of wheel position the lights would come on and stay on for most if not all of my trip, but would be off again when I started the car back up. That went on for a few weeks and then they came on and stayed on accompanied by a CEL with a P500 wheel speed sensor code. I've also noticed the car is really sluggish feeling almost like the brakes may be applied in the rear because if I just put the car in drive or reverse (automatic) and let of the brake it doesn't start to move till I give it gas. I've also noticed some strange shifting symptoms like the trans is slipping , but the RPM's don't show like a slipping trans. I had replaced the passenger front wheel sensor with a cheap eBay sensor when I first bought the car because it wouldn't shift at all and it fixed the problem, but I went back and put in a Seimens sensor yesterday thinking it would help , but it did not.
So...... While is like to think it was as simple as a bad sensor, all the sensors are new or relatively new and the fact that it all started with a pot hole (unless that was a coincidence) just has me scratching my head.

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