Total Electric failure when starting
11-11-2015, 04:56 AM
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Mercedes C180 w203 (petrol)
Total Electric failure when starting
Hi I have a mercedes c180 w203 petrol.
When I turn the ignition on, all the lights at the odo meter turn on (like it should do). But when I start the engine, I have a total electric failure. (no brake lights, no whiplers, no flickers, not even the ref counter is working). I noticed When I start the car, put it instantly off and start it again, that the problem is sorted out. But I can't do this every time. Think the starter will break later on.
I also changed one of the relays in the fuse box in the bonnet. But maybe changed the wrong one.. Any other suggestions that might cause this electric failure when I start the car?
When I turn the ignition on, all the lights at the odo meter turn on (like it should do). But when I start the engine, I have a total electric failure. (no brake lights, no whiplers, no flickers, not even the ref counter is working). I noticed When I start the car, put it instantly off and start it again, that the problem is sorted out. But I can't do this every time. Think the starter will break later on.
I also changed one of the relays in the fuse box in the bonnet. But maybe changed the wrong one.. Any other suggestions that might cause this electric failure when I start the car?
11-11-2015, 11:23 AM
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2004 C320 4matic sedan
Perhaps your battery is weak? Starting draws the voltage down to the point where everything cuts out. Just a guess. load testing your battery will be free or cheap!
11-11-2015, 09:22 PM
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Some of the symptoms are those of a failing rear SAM (the fuse box in the trunk).
So if you drive a little and then try to shut down/restart does it fail again or is it fine?
So if you drive a little and then try to shut down/restart does it fail again or is it fine?
11-12-2015, 11:44 AM
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11-12-2015, 11:45 AM
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11-12-2015, 01:08 PM
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What are the battery voltages after it had sat overnight before starting, and after you shut it off following a drive?
Hmm, if you had a bad SAM the lights/wipers etc would not work all the time, so you can rule that out. But perhaps check for corrosion and loose contacts?
Hmm, if you had a bad SAM the lights/wipers etc would not work all the time, so you can rule that out. But perhaps check for corrosion and loose contacts?
