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Old 03-17-2015, 05:21 AM
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Question ML 270 Break Lights

Dear All,
My ML 270 fail the MOT due to the break lights are not working. It was at the MOT station for the last 7 days they went through the full circuit diagram and the ECU still they couldn't find the fault. Did you come a across this fault or have any solution for this problem. If you could help me I will more appreciates.

Thanks
Champ
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Old 03-17-2015, 06:06 PM
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Time to start over. Check the bulbs and the fuse(s). If they are good check the switch. If that's good then you get to start tracing and checking wiring.
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Old 03-17-2015, 07:42 PM
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the tool to use for testing is a multimeter, specifically the voltmeter function of it. is there voltage at the bulb, at the switch, and at the fuse?
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