ABS light comes on all the time!!

avant11 · 03-02-2008, 04:51 AM

I just bought a 2000 A4 Avant 1.8T a month ago. My ABS light comes on everytime I start the car and then the "circle with !" beeps 3 times and stays on! The workshops say cud b due to a few things; ABS pump, sensor, control board, brake switch... Anyway one of the better workshops sort of confirmed that it wasn't the brake switch and the ABS pump is working (using VAG computer and testing on the brakes). This leaves the sensor and board and according to the VAG machine, only 1 of the sensor doesn't work. Does anyone have similar problem and any advice or solutions pls??? Thx.

AlanTwigg · 03-02-2008, 10:43 AM

Quote:

Originally Posted by avant11

I just bought a 2000 A4 Avant 1.8T a month ago. My ABS light comes on everytime I start the car and then the "circle with !" beeps 3 times and stays on! The workshops say cud b due to a few things; ABS pump, sensor, control board, brake switch... Anyway one of the better workshops sort of confirmed that it wasn't the brake switch and the ABS pump is working (using VAG computer and testing on the brakes). This leaves the sensor and board and according to the VAG machine, only 1 of the sensor doesn't work. Does anyone have similar problem and any advice or solutions pls??? Thx.

I had a similar issue on my '96 A4 after I had changed the rear discs & brake pads, I had not replaced or refitted the ABS ring sensor which sits on the inside of the disc. Have the discs been changed at all?

avant11 · 03-02-2008, 06:56 PM

No, but previous owner may have changed the brake pads. So you have not fixed the issue in your car?

**docurley** · 03-03-2008, 07:10 AM

You may have brake dust on the ABS sensor or it could be the the ABS module if dead and you will need to have it fixed or replaced.

avant11 · 03-04-2008, 05:02 AM

The workshop cleaned the sensors for me, and the problem's still there! ABS module = control board thing or individual sensors? pls advise....thx

**docurley** · 03-04-2008, 08:41 AM

Best way is to get it connected up to VAGCOM if it can not connect to the ABS module then thats what is dead and you will need a new one or have it fixed at the cost of around £200 and that means sending it away to be done.

avant11 · 03-04-2008, 09:14 AM

Got it! Will try that.

03-02-2008, 04:51 AM	#1 (permalink)
avant11 Newbie Join Date: Feb 2008 Posts: 13 Gallery: (0)	ABS light comes on all the time!! I just bought a 2000 A4 Avant 1.8T a month ago. My ABS light comes on everytime I start the car and then the "circle with !" beeps 3 times and stays on! The workshops say cud b due to a few things; ABS pump, sensor, control board, brake switch... Anyway one of the better workshops sort of confirmed that it wasn't the brake switch and the ABS pump is working (using VAG computer and testing on the brakes). This leaves the sensor and board and according to the VAG machine, only 1 of the sensor doesn't work. Does anyone have similar problem and any advice or solutions pls??? Thx.

03-03-2008, 07:10 AM	#4 (permalink)
docurley Super Moderator Join Date: Sep 2006 Location: London Posts: 680 Gallery: (6)	You may have brake dust on the ABS sensor or it could be the the ABS module if dead and you will need to have it fixed or replaced. __________________

03-04-2008, 08:41 AM	#6 (permalink)
docurley Super Moderator Join Date: Sep 2006 Location: London Posts: 680 Gallery: (6)	Best way is to get it connected up to VAGCOM if it can not connect to the ABS module then thats what is dead and you will need a new one or have it fixed at the cost of around £200 and that means sending it away to be done. __________________

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03-02-2008, 06:56 PM	#3 (permalink)
avant11 Newbie Join Date: Feb 2008 Posts: 13 Gallery: (0)	No, but previous owner may have changed the brake pads. So you have not fixed the issue in your car?

03-04-2008, 05:02 AM	#5 (permalink)
avant11 Newbie Join Date: Feb 2008 Posts: 13 Gallery: (0)	The workshop cleaned the sensors for me, and the problem's still there! ABS module = control board thing or individual sensors? pls advise....thx

03-04-2008, 09:14 AM	#7 (permalink)
avant11 Newbie Join Date: Feb 2008 Posts: 13 Gallery: (0)	Got it! Will try that.

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