Help, Ignition Coil Part number - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 03-18-2006, 01:54 PM Thread Starter
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Help, Ignition Coil Part number

I went to a local mechanic because of an aperiodic vibration problem at low rpm (below 1000, 2001 W210). They said I need to change the 4 ignition coils, all spark plugs and spark plug wires, and a crankshaft sensors. When I looked at the engine after repair, it seems the ignition coils were not changed at all.

Can anyone let me know how I can identify if ignition coils are changed? I need to know what the numbers on the second row on the coils mean. It looks like an invoice or batch number to trace parts. 5 coils had same numbers and 1 had a different number.

Numbers on 5 coils:
A000 158 78 03
0 221 503 035

Numbers on 1 coil:
A000 158 78 03
0 221 503 035

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post #2 of 3 (permalink) Old 03-18-2006, 07:16 PM
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RE: Help, Ignition Coil Part number

The coil numbers are all the same. The top and bottom numbers are all that matter. Next time someone tells you that a dozen parts all failed at the same time, you might wannna think about taking your car somewhere else...

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post #3 of 3 (permalink) Old 03-19-2006, 07:35 AM
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RE: Help, Ignition Coil Part number

Whew, it sounds like they did not know, and changed everything they have ever heard of that could cause a problem. Mercedes Dealers are notorious for overcharging but dont go that far. I would find a shop that knows, before throwing parts at it. I think a 01 is a little early to have all that performed on it and did you get all the old parts? A reputable shop does that, even MB does it.
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