C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Help: Key won't turn

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Old Dec 25, 2016 | 04:52 PM
  #1  
993c4_Toronto's Avatar
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C240 Wagon
Help: Key won't turn

Hi All,

I read the other threads on related issues but I did not find a solution. My c240 wagon 2003 was running fine but today when I put the key in, the ignition does not engage, no lights come on, key won't turn.

I checked the fuses and they all seem OK. I have two keys which were both working yesterday and today neither works.

Tried jumping the car and nothing.

I do not have a volt meter so I am not sure the battery is not dead but it was fully charged yesterday and no lights seem to be on.

If I call CAA/AAA will they be able to do anything? Can't even unlock the wheel to get the car out of the garage.

Any ideas??

TIA
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Old Dec 25, 2016 | 05:23 PM
  #2  
miike's Avatar
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From: Seattle
2002 G500, 1961 190b, 2001 SL500 Sport
Step 1 Verify battery voltage. Everything else is pointless until that is done.
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Old Dec 25, 2016 | 05:50 PM
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C240 Wagon
I love a one step solution! Makes sense. In the world of immediate gratification it's irritating that I can't go get one today or tomorrow.
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Old Dec 25, 2016 | 08:30 PM
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SunnyRayToronto's Avatar
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From: Toronto, Ontario, Canada, eh!
2003 C230 Sports Coupe, Paprika Metallic Red, Auto, Pano, Leather
If you want a one step solution then be a woman and call CAA/AAA.

But if you're man enough then get out the voltmeter or at least get into dyno-mode to use the car's on-board voltmeter - Ah, so apparently, you didn't do enough reading!

And remember, NEVER jump start a Mercedes. You risk damaging the Front SAM. Your issue could be anything from power drain like power seats, weak battery (should be replaced every 5 years!), alternator, dirty ignition/key, faulty EIS (expensive),...
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Old Dec 25, 2016 | 09:36 PM
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C240 Wagon
Dyno-mode - I have no idea about this. I'll search and learn on that one.

Never jump a Mercedes? Never heard of that. Why do they provide the remote jump location? I'll have to look up that one too.

I have a friend coming by tomorrow with a volt meter so maybe we'll figure it out. My battery is only 2 years old I think so it seems odd to me. And I have two keys that I was able to try both with the same results so pretty sure that's not the issue.
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