had problems with my ccm since i got the car (octavia mk1 4x4 estate), got a replacement from the dealer i bought it from but i seemed to fix it by sorting some wiring in the boot while waiting for the replacement to turn up.

last october it started playing up again so i took the fuse out, now the weather is better, i've decided to have another look at getting it sorted as i'm selling the car.

With the original ccm in nothing works ( central locking, windows, interior lights, etc), and the box just clicks like mad.

With the replacement ccm evrything works fine except the remote central locking ( central locking with the key in the door works fine)

also with the replacement ccm the hazards flash after a short time of opening a door as if the alarm is going off.

Been told it needs coding to the car but this has brought up more problems.

No TAX on the car so can't take it to skoda to get it coded

Got vagcom and finally found my lead after 2 days of searching the house

The original ccm gives an intermitent communication fault if i open the CAN gateway controller, and sometimes lets me open the ccm controller but most of the time it just says no communication from controller.

The replacement ccm will not allow me to open the ccm controller and gives no faults in the CAN gateway controller

was going to try and recode it the replacement but as I can't open the contoller I can't get to the coding part

Any help would be very much appreciated

My knowledge of vagcom is very limited, to the point where i just wing it at the min, learning as i go

I think CAN gateway coding is carried in the ccm. It is on my Fabia. It may be that you need to code channel 19 first using the code you have from an old VCDS scan. This does to some extent 'add' equipment to the car. You may then be able to move on to coding the ccm fully as it will then be aware of the central locking etc.

checked the coding on channel 19 ( gateway) and it's the same with both boxes in, don't know if it's changed as i have no previous scans to check against

Sorry that didn't help.I made an error in my first post. Do you have an Electronics Control Module channel 9. The coding of channel19 the CAN gateway was carried on this in my car, not the CCM. If you go to the coding screen for the ECM and start the recoding screen without actually altering anything they put up a crib sheet which may allow you to check coding is correct for the ECM. It does sound as if the car doesn't know it has remote central locking. Then perhaps you can get to the gateway and CCM.

I'm very new with my VCDS and just learning the twists and turns. Perhaps someone with more experience could help out.