2007 C230 TCM/TCU location
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C230
2007 C230 TCM/TCU location
Hello
I have an issue shifting gears on a 2007 C230 V6 Sport. It goes into limp mode, so need to turn it off and on again to fix that. Looking for transmission control module/unit, where is that located and how to get codes ?
Thanks in advance
I have an issue shifting gears on a 2007 C230 V6 Sport. It goes into limp mode, so need to turn it off and on again to fix that. Looking for transmission control module/unit, where is that located and how to get codes ?
Thanks in advance
MBWorld Fanatic!
Joined: Jun 2002
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From: So. Oregon Coast
C230 Sport Coup + 2006 W164 ML350 + 99 Ford Escort RIP
Your going to love this....
They put it inside the transmission, part of the conductor plate,
And it's coded to the car so you can't replace it though i saw a guy on ebay
who will sell you one if you send hi your old one.
They put it inside the transmission, part of the conductor plate,
And it's coded to the car so you can't replace it though i saw a guy on ebay
who will sell you one if you send hi your old one.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 3,275
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From: BC, Canada
2003 C230K Coupe Orion Blue
The TCU is located inside the passenger side footwell, behind the panel where the feet go. I imagine this should apply for MY2007. Pretty accessible. Just peel back the carpet and the panel is right there. I believe it's held in place by 2-3 fasteners. The TCU is clipped into place on the back of the panel.
Did you update the transmission pilot bushing? There are at least 3 versions out there. The old versions have fault o-rings and leak transmission fluid up the wiring into the TCU.
Once you have the passenger foot panel removed, it will be obvious if the wiring is soaked with transmission fluid. Be sure to keep some paper towels or shop rags handy.
Did you update the transmission pilot bushing? There are at least 3 versions out there. The old versions have fault o-rings and leak transmission fluid up the wiring into the TCU.
Once you have the passenger foot panel removed, it will be obvious if the wiring is soaked with transmission fluid. Be sure to keep some paper towels or shop rags handy.
Last edited by slammer111; Apr 14, 2025 at 02:38 AM.
Thread Starter
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C230
I forgot to mention this an automatic transmission. How to replace the TCM/TCU if it is bad, can it be coded for my car ? Sounds fishy, to give it to someone on eBay and they sent something to me.
I already give the car to a local Benz mechanic and they did not find any transmission fluid leaking or would have mentioned this to me. What are the next steps to try here ?
I already give the car to a local Benz mechanic and they did not find any transmission fluid leaking or would have mentioned this to me. What are the next steps to try here ?
