Volvo XC70 This wagon/SUV crossover offers the capabilities of an SUV without SUV size.

Transmission and TCM Compatibilty Question

Old 10-11-2010, 01:30 PM
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Join Date: Oct 2010
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Default Transmission and TCM Compatibilty Question

As I posted a few days ago I was having a tranny problem in my 2000 XC70. I put in a used tranny from a '98 XC70 and was still having fault codes and tranny was shifting a little hard. At any rate after a diagnostic check at my local dealer I found out the hard way that a 98 transmission is not compatible with a 99 00 XC70 due to an electrical change made in 99. So my question is this, if I install a computer from a 98 XC70 to match the 98 tranny I already installed will they then work together? If so would any reprogramming be necessary or can I just clear any codes that are left? Also, where exactly is the Transmission computer located on a 00 XC70? Thanks for any suggestions!!!
Old 10-11-2010, 08:27 PM
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Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,351

You cannot install the 98 TCU. There is no way it will work.
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