Hello, guys I need your help... while ago I upgrade my Halogen headlights to LED Bi-Xenon, plate number lights to LED and going on to LED Tail lights. but main issue I face is about upgrade CECM from Part No SW: 5K0937087M BCM PQ35 H 011 0048 to 5K0937087R BCM PQ35 H 021 0068, I got instruction from my personal support and I follow it but we reach somewhere and we did not cross it due to kessy system as i guess.
Here are the steps:
Run full scan for old CECM and save as backup.
Switch of CECM to new one 5K0937087R
Go to Address 09: Cent. Elect.
Then 07 long coding
Go to adaptation
Disable factory mode
Then go remote control in adaptation list
Add number of remote you have, save and test
Then to activate remote press unlock button until beeping
this is the missing step with my case after pressing unlock it for 15 to 20 seconds or more it is blinking and key is working unlocking and locking, windows open and close by remote, boot open my remote but no KESSY start (I tried pushing button start/stop) showing in the dash key not in the range.....
Any idea how to do the correct way for the CECM Upgrade....???