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Why did VDC and ABS lights come on at highway speed of around 75-80mph?
Posted 17 August 2008 - 02:58 PM
The car only needed the Serpentine belt replaced and wheel alignment and I also picked up a new set of tires. At 85K miles, we’ll probably also do the 90K servicing soon.
Twice while driving at faster highway speeds +75mph (the car is smooth enough on smooth highway that you really don’t feel the speed and everyone drives +70 here to begin with), I saw the VDC and ABS indicator lights switch on on the dash. Both times there were some cracks/bumps in the highway which jarred the car and may have triggered the lights. The lights stayed on after coming off the highway, but next time car was started, the indicator lights stayed off after start.
Why did the lights come on? Did the systems switch off because of the higher speed or because of a bump/crack in the road jarring the car? Does this mean that the VDC and ABS systems were temporarily disabled? If so, did they need to be switched back on? I’m going to check out the owner’s manual as well, just haven’t had time working crazy hours and getting settled.
Posted 17 August 2008 - 06:47 PM
I would look at the wheel speed sensors and the tone rings. Its possible a senosr is loose or a hairline crack in a tone ring, add in the rough road at highway speed, it can knock the air gap out of kilter.
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