abs light and brake light

bleaf · 11-01-2004, 05:58 PM

hi I have a abs and brake light coming on ,my car is a 98 a6,I put the vag on it and no codes. I brought the car to a garage and was told there is an electrical problem somewhere.Does any body know where I should look and how to test(I am assuming I will be looking in the instrument cluster..)

April · 11-01-2004, 06:08 PM

has one, and it usually looks like a metal pie dough crinkle cutter disc with a small metal rod held end first very near the disc. The sensor is the rod, and sometimes can be moved too far, or too close. The wires leading to the rod/sensor can also get damaged.

There is also some precedent of the ABS controller going bad. This is the electronic portion, not the actual pump unit.

Do a search on this forum, and you'll see plenty of info. Also check Stoney's FAQ (link under my sig) for info.

TRed 2.7T · 11-01-2004, 06:12 PM

howdeeaudi98 · 11-02-2004, 12:13 PM

I'll have to second that clearance therapy with the hall sensor. Mine was out of whack for a bit and I got the dual ding.. My mech recleared the sensor code, and then calibrated it's distance from the sensor ring in the swing arm mounting point.
Funny thing.. my other 3 ABS sensors read out 12.89-12.85 ohms, and the one I bought to replace my eaten one was at 15.27.. That calibration theory about the ohm's not being off meantioned in the article may be just hooey. The distance to the sensor ring seems to have been the only defect in the system.

Wierd huh?\

11-01-2004, 05:58 PM	#1
bleaf New Member Account #: 83338 Join Date: Nov 2004 Posts: 13	abs light and brake light hi I have a abs and brake light coming on ,my car is a 98 a6,I put the vag on it and no codes. I brought the car to a garage and was told there is an electrical problem somewhere.Does any body know where I should look and how to test(I am assuming I will be looking in the instrument cluster..)

11-01-2004, 06:08 PM	#2
April AudiWorld Uber User Account #: 3127 Join Date: Mar 2000 Posts: 52,730	The first thing to do is to check the hall effect sensor clearance. Each wheel has one, and it usually looks like a metal pie dough crinkle cutter disc with a small metal rod held end first very near the disc. The sensor is the rod, and sometimes can be moved too far, or too close. The wires leading to the rod/sensor can also get damaged. There is also some precedent of the ABS controller going bad. This is the electronic portion, not the actual pump unit. Do a search on this forum, and you'll see plenty of info. Also check Stoney's FAQ (link under my sig) for info. __________________

11-01-2004, 06:12 PM	#3
TRed 2.7T Member Account #: 48069 Join Date: Dec 2002 Posts: 3,398	Mine was the ABS controller, covered under warranty. __________________ Rules of turbo ownership! 1. Let them warm up until the oil temp gets to 175 degrees (at least). 2. Likewise, after a "spirited" run, let them cool off for a couple of minutes before you shut off the engine. 3. Use full synthetic engine oil - 0-40 is best! These rules apply regardless of the ambient temperature. A little caution should mean longer turbo life. To clarify, this doesn't mean you have to sit in your driveway for 5 minutes and let it warm up or cool down, it means you should use common sense and take it easy when you start/finish your trip. Stoney's FAQ <a href="http://forums.audiworld.com/s4/msgs/2008685.phtml"> a must read</a> Golf community and handicap tracking @ golfinity <a href="http://oldoakland.golfinity.com"> Old Oakland Golf Club</a>

11-02-2004, 12:13 PM	#4
howdeeaudi98 New Member Account #: 70833 Join Date: Mar 2004 Posts: 315	Re: abs light and brake light I'll have to second that clearance therapy with the hall sensor. Mine was out of whack for a bit and I got the dual ding.. My mech recleared the sensor code, and then calibrated it's distance from the sensor ring in the swing arm mounting point. Funny thing.. my other 3 ABS sensors read out 12.89-12.85 ohms, and the one I bought to replace my eaten one was at 15.27.. That calibration theory about the ohm's not being off meantioned in the article may be just hooey. The distance to the sensor ring seems to have been the only defect in the system. Wierd huh?\

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