Today I went for what for me is a long run, about 70 miles, out and back. The car was a pain in the butt. I get occasional incidences of the ABS warning light coming on, usually once every few weeks. It appears to be a dodgy connection as it resets when you turn the ignition off and back on. Today it was doing it every 10 or 15 minutes. On top of that the cruise control repeatedly dropped out and even the Climatronic unit was playing silly buffers. It was a damp misty morning and I turned the temperature up from 18°C to 20°C. The next time I looked it was back down to 18°C. This happened about three times. At Least it starts and runs!

Edited 26 June, 20241 yr by Jocko

Two questions relating to the issues I am having. Regarding the ABS, as the fault is intermittent, will an error code show up on VCDS-Lite if the light itself is not on. The problem is unless I am connected to the system when the error occurs it clears if I turn off the ignition.
With regards to the cruise control disengaging, are the only factors that cause it to do so the stalk switch, the brake pedal and the clutch? The problem is not a temporary loss of supply because pressing Res+ (Resume) reengages it. I am searching for a suitable circuit diagram.

Simply replace the clutch switch first, then the brake switch if that doesn't fix it, the parts are cheap and as you rightly point out, it can't really be anything else.

1 hour ago, sepulchrave said:

Simply replace the clutch switch first, then the brake switch if that doesn't fix it, the parts are cheap and as you rightly point out, it can't really be anything else.

Thanks. I didn't realise just how cheap these parts are. I think I will replace the brake switch first as I can do that myself. The clutch switch is the more likely culprit but with my limited mobility, I think I would struggle to do that one myself.