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2004 c230 start issue

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Old Sep 4, 2019 | 08:55 PM
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mzglinicki's Avatar
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2004 Mercedes C230 Kompressor
2004 c230 start issue

I have a 2004 C230 that I changed the alternator on and once I got it replaced (which was way harder than it should be) the car now will only turn over once and then it makes a buzzing noise in the esp unit. I think it could be the starter but is it possible that there is some sort of fuse or relay that would cause the starter to fully engage.
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Old Sep 5, 2019 | 11:23 AM
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From: Laguna Hills, CA
2006 C230 and 2014 C250
the buzzing makes me think battery. does it have 12 or 13 volts in the battery?
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Old Sep 19, 2019 | 07:35 PM
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2004 Mercedes C230 Kompressor
Originally Posted by terryc230
the buzzing makes me think battery. does it have 12 or 13 volts in the battery?
13 volts. Here is a video of what it sounds like. I can't attach the video for some reason so here is a link.

https://www.youtube.com/watch?v=oPkA...ature=youtu.be
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Old Sep 19, 2019 | 09:01 PM
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From: New England! :-)
2005 C230K Sport Coupe
Boring!
Plus, it's too easy.

First: The engine does not turn over once. Look at the pulleys.
The engine moves ~~1 degree (out of 360).

Second: Why did you say the ESP/ABS unit makes noise?
That noise is the stater free wheeling.


Do the following:
1) Get a volt meter.

2) Keep the leads on the battery.

3) Crank the engine and observe the voltage.


4) Tape/hold the leads to the battery cables, without touching the battery posts.

5) Crank the engine and observe the voltage.


The issue is that the starter is not getting enough voltage/current.
It could be a loose battery cable, a corroded cable, a bad battery, etc.

Since the engine "moved", I don't think it's a seized engine, nor a bad starter(gear), nor a bad (missing teeth) "flywheel" (actually, it's a "flex plate" on an automatic tranny ).

Good Luck!
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