I have had my 1988 S4 for just over 4 years so back to Paul Anderson for another Cambelt and service last Monday, 200 miles journey home but when I tried to start again engine not cranking, really weird like the immobiliser was on, couldn't be that as I asked Paul to take the alarm out.
He text me 2 pictures and what to do - just wanted to upload them here as it might help someone, sorry if all you guys were aware of this but it just happened again at a petrol station and again it got me home!
If the engine will not crank, make sure in Park, leave ignition on. Split the connector under the cover of the jump start Terminal, touch the last prong to the Terminal and it started. This plug was split when I had the Cambelt done and it seems to be causing me problems.
Regards
TCW