Last week, my ESP light came on in my 2003 jetta 1.8t. i regularly used my traction control to compensate for the icy roads here, and last tuesday i noticed it was on when i started the car( normally it reverts to off when the car is shut off) and when i went to press it it wouldnt turn off. i also noticed i slipped around quite a bit more. after checking online in a jetta forum, i discovered i no longer have traction control, but the cause of the problem was still unknown.however, i received a few ideas to what it is. The MAF, the wheel speed sensor, or possibly the ABS. after talking to my '' car guy'' he told me its least likely to be the MAF, seeing as theres no difference in my mileage or the actual performance of the car. And i dont know what to look for in the ABS, as my brakes seem to work fine. any suggestions as to what the problem could be?
thank you
The problem is almost certainly NOT the MAF sensor.
This problem can be caused by any one of the following
A faulty or dirty ABS wheel sensor...situated at each one of the 4 hubs
although the ABS light would usually illuminate if one of these sensors is faulty.....but NOT always
A faulty ESP switch The switch may be stuck in the open position, which
WILL illuminate the ESP light and turn OFF your traction control.
Some models are also fitted with a YAW sensor, which detects side slip
while driving. If this goes faulty it will also Illuminate the ESP
light.
This sensor is bolted to the center of the floor panel..under the rear seat.
So as to save time and money..You should have the OBD codes scanned. This will pin-point the problem in minutes.
All the best
John
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