Hi all. 08 220d. A while back I got out my car, got back in and the ignition wouldn’t come on. (Start stop button stays red not green) Headlights fine/battery fine but no ignition. Cleaned battery terminals and reconnected and no change, but after a while it just decided to work again and start.
This last week it’s done it pretty much every other day, resulting in breakdown coming out as after an hour or so the ignition would Not come on. “Check st lock” came up on the screen but nothing else. Breakdown technician bypassed the battery for 10mins which he said could reset the ecu? Eventually it decided to start, and when it did start it made this funny struggling wining noise for a split second or so. Never really knew if its what the technician did that made the ignition come on and start again?
Its really frustrating as I could get in and out the car 20 times in a row, and it will start fine, but then randomly now and again the light stays red on the start button and no ignition.
I'm going to book it into an auto electrics garage anyway, but wondering if anyone else has had a similar experience, before I start forking out fortunes for the garage to just play trial and error, as I fear the time its in the garage it will be absolutely fine and impossible to diagnose.