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ABS,ASR,BAS warning lights on.

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Old 11-25-2006, 01:27 PM
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ABS,ASR,BAS warning lights on.

Got home last friday everything ok, parked up, went to start the car on monday and the ABS warning lights stayed on. ABS not working, I have changed the brake light switch as I gather this can cause this problem, but it doesn't seem to be the cause here. Has anyone any other Ideas before I trot along to the dealer?

Thanks, Timbo. 98 C230K Sport
Old 11-25-2006, 11:28 PM
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C230K
Are you sure your battery is good/not going bad? As the battery gets weak, the car computer shuts off functions like the ABS when there is a chance that the battery may not have enough power to make them work in an emergency situation. You can find many posts about the ABS light going out when a new battery is installed.

Take it to an auto parts store for a free battery load check.

Doug
Old 11-26-2006, 06:26 AM
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It's not the battery, it's a little over a year old, anyway, when the battery went dead before replacing it ABS etc continued working fine. I have also tried the lock to lock thing, still no good.

Timbo
Old 12-04-2006, 08:55 PM
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mine was the brake pedal switch. 99 c230k
Old 12-13-2006, 04:45 PM
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turned out to be a front speed sensor, £100 fix

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Old 01-08-2007, 05:44 PM
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GLE 350D GLC 250D, Previous vehicles W204, W164, W163, W210 & W202
ABS Sensors can also cause this problem.

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