1Z immobiliser intermittent issues

DataDriven

New member
Joined
Mar 29, 2020
Location
Central europe
TDI
1Z
Dear all
I have a strange issue with the immobiliser of a 1Z engine out of a 1995 mkIII golf TDI installed in a T3 bus...
Every once in a while, but if so always from cold after not using the car for several weeks, the immobiliser will not work anymore, characterised by the typical 1s running and then dying again. This will be a pain in the butt up to about ten trials until it magically fixes itself.
I've checked the wiring several times and cannot find an obvious issue. - Testimony to that is that 99% of the time it will work absolutely fine, and it does of course always work when I'm around to try and diagnose it. - The joys of intermittent issues...
I was therefore wondering if these symptoms did ring a bell for people more knowledgeable than I am about these vehicles? Else, is there a way to check the immobiliser status during the issue with Vagcom / Hella Gutmann / ...?
Thanks in advance for your help!
 
Top