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00 ML 320 w/ 108k, ETS BAS ABS cluster on again, after the brake switch has been changed. Upon start up and speed up to 25mph, a sound is heard on left front. The lights come on after the grunt sound, resets after ignition on/off. MB dealer diagnosis: POSSIBLY bad ABS pump...damage 1900$ for part only. any info/advice on this would be appreciated
thanks
dkm
 

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Could very well be the ABS unit. The last time I ran into this complaint, to where it wasn't the stop lamp switch. The ABS pump was inop and I was getting a code for it. I ended up diagnosing it to be a faulty ABS pump relay. But that shouldn't cause any abnormal sounds. Do you know what trouble code your getting?
 
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