jksuperstar
Member
Backstory: My 02 Golf (ALH) had some declining performance, and an odd power issue where I turned off the car once, and suddenly all power to the car was lost (I realized this walking away, when the remote didn't lock the car, so I jumped back in and instr cluster was reset, no power to anything, etc). So I stuck the key back in, turned to ON, and instantly everything powered back up. Damn strange. Two days later, the car wouldn't start...it turned over strong, but never fired up. I connect VCDS, and could see the auto-trans TCM, and the cluster, but I had "Too Many Communication Errors" with the ECM. I connected an Alientech Powergate and it couldn't find an ECM either. Before this, for a week, while driving I'd get 3 beeps, but no lights, no blinking, no CEL triggered, and no codes to be retrieved. That happened about three times.
I'm guessing the ECM is shot. I ordered a used one off ebay. I've got some info about what to do when it arrives from the ross-tech site. But I'm still confused about exactly what info I need to get the new ECM up & running, and keys working.
I have an old VCDS log from the original ECM, so I have the Immo-ID, VIN, etc. Do I still need a PIN for the keys? Or since the keys & Immo are the same, will that not matter?
Also, the way the ECM died was strange. Any how-tos or helpful hints about checking power to the ECM? Or anything else? I've tried searching this and other forums, but ECM, ECU, and details about the Immo are mixed and sparse. I'll gladly take some links to existing info rather than start a new thread if the question has been answered thoroughly.
All help appreciated!!
I'm guessing the ECM is shot. I ordered a used one off ebay. I've got some info about what to do when it arrives from the ross-tech site. But I'm still confused about exactly what info I need to get the new ECM up & running, and keys working.
I have an old VCDS log from the original ECM, so I have the Immo-ID, VIN, etc. Do I still need a PIN for the keys? Or since the keys & Immo are the same, will that not matter?
Also, the way the ECM died was strange. Any how-tos or helpful hints about checking power to the ECM? Or anything else? I've tried searching this and other forums, but ECM, ECU, and details about the Immo are mixed and sparse. I'll gladly take some links to existing info rather than start a new thread if the question has been answered thoroughly.
All help appreciated!!