Transmission Control Module Problems -

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Old 07-03-2008, 12:26 AM
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Join Date: Jul 2008
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Default Transmission Control Module Problems


I have a 2004 Audi A4 Cabriolet which had about 28000 miles on it. In the morning today, my car started normally, but moved very very slowly. I could not feel the engine roar even when I had the accelerator pushed all the way down. None of the lights on my dashboard were flashing. I towed it to the nearest dealership. They say that the TCM has been damaged and needs to be replaced. Please pardon my ignorance about cars, but how would a TCM affect the engine roar when I am parked and I press the accelerator?

Luckily, I have certified warranty which will take care of this repair. However I am surprised that something like this would pop on car with such low mileage. Anybody here has an idea as to what could cause the TCM to fail? Is it just a manufacturing defect? Further could the faulty TCM have affected other parts of the transmission and what further questions should I ask the dealer.

Thanks a lot in advance and I appreciate your help!

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Old 07-03-2008, 01:56 AM
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Join Date: Sep 2006
Posts: 2,254
Default RE: Transmission Control Module Problems

I'm not a technician, but here is my IMHO. When one of the modules goes bad, you should get a CEL, thats the whole point of it.
From what i've read, usually whe TCM goes bad, when u try shift from lets say N to P it does the opposite or doesnt do anything. Or starts slipping.
Here and here and also here is a couple of threads about it
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