CCM issue

[John1567890]

Hello just after buying 2003 C5 a6 avant I bought the car assuming ccm was the issue for all interior issues. Took it out and I was right but the connectors are destroyed with corrosion. I have a 2001 saloon a6 but the ccm does not match it is only one digit off on the part number the avant has an N and the sallon a K would I be able to use this ccm. I must now try to cut connectors off and solder in new connectors if somebody knows if these ccms are interchangeable that would be very helpful thanks 

[Steve Q]

They're not interchangeable. You need to swap the failed part out for one that has the exact same part number 

[John1567890]

Okay thank you yes I was thinking that this would be the case alright would I be able to take connectors from the saloon and solder the wiring into the estate connectors the same and wires are the same colours going to each pin also after I replace the ccm will have to reprogram the ccm ? 

[Steve Q]

13 hours ago, John1567890 said:

Okay thank you yes I was thinking that this would be the case alright would I be able to take connectors from the saloon and solder the wiring into the estate connectors the same and wires are the same colours going to each pin also after I replace the ccm will have to reprogram the ccm ? 

Now that I'm not sure. It's a risk for sure. Might be smooth seeking the advice from an auto electrician on that one. 

[daveyboy1967]

19 hours ago, John1567890 said:

 I replace the ccm will have to reprogram the ccm ? 

I replaced the CCM in my '03 A6 C5 1.9TDI with one that had the identical part number a couple of months ago and it was completely plug and play. Your key fobs will need to be reprogrammed however, but it's a really quick and straightforward job if you have two. I posted a guide in the C5 forum that explains it step by step. Hope that helps you mate.

Edit

I've just noticed the CCM in your avant ends in an N and the saloon in a K, weirdly the one in my saloon is an N, go figure.

Edited 3 hours ago by daveyboy1967
Additional info

[John1567890]

Hello thanks for the advice the ccm ending in a K is only up to 2002 the saloon I have is a 2001 I have found a ccm online identical part numbers so I must get that ordered and now I must try and salvage a few of my connectors instead of having to rewire in all new ones I was thinking of trying to split the case of my own ccm and salvage it but when I got to the inside I can firmly say it is long gone unfortunately hahaha