Oh great news, well done for persisting and beating it!

 

Will you have a look at the old unit to see if there's a visible damaged part?

Edited 27 January, 20179 yr by Wino

Yes, that was the first thing I did when I took out the old module! No signes of damage.

I know this is an old thread and an old topic but I have a Seat Ibiza Cupra TDI with a very similar problem currently. Driving along all my door locks started locking and unlocking randomly and I had smoke coming from the dash, my CCM had fully melted. I bought a new one for 400 and the garage stripped the whole dash and fitted it, tested the car and the new one melted when the anti hijack kicked in. What is this corrupt cable you mention and how did you fix it? My car has now been off the road 9 weeks and costing me a fortune as I'll now have to buy another new CCM!

After so many years, I barely remember! Well, to put things in order, the problem with mine was the CCM. What you can see at the photos I had posted above, isn't the CCM. I wasn't familiar with the car back then and I was misunderstood the parts and functions! 

 

I had bought the car with that problem (and some more) so it didn't happened to me. I don't know if the previous owner had seen any smoke. He still doesn't remember anything (I have close contact with both the previous owners). We are guessing that what caused the problem was a short circuit at the roof light. The CCM went off and caused the problem with the locks going mad! The other module (of which the photos are) continued to work ok! Of course there is the possibility the burning (and short) capacitor burned the CCM. That will stay a mystery. 

 

My CCM was not fried. Not a sign of overheating or a burning element. It just broke down. 

 

So practically, I can't help you. It seems you have different problem than mine! 

Thanks for the info, I bought another second hand unit from a Fabia for my Ibiza Cupra, fitted it, turned off anti hijack and programmed the keys and it works absolutely fine. The issue is the alignment of the lock to the latch in the door, when anti hijack kicks in it doesn't remember the door is locked as the lock is slightly misaligned, and so it send the signal over and over again to lock and unlock. This caused the relay in the CCM to overheat and melt repeatedly.