[scratch113]

Assuming you have the standard CC and not ACC (which has a separate stalk for the cruise lower than the left indicator stalk), then have you tried turning it to OFF rather than just CANCEL using the button A on the diagram from the manual below? It is sprung from CANCEL back to ON but will 'click' to OFF and stay there if you push it to the right.

When it's not working, do you get the little cruise symbol at the bottom left of the dash display with an exclamation mark next to it? That's also mentioned in the manual on page 239.

 

[scratch113]

So I had a strange one last weekend whilst I was travelling down to Cornwall to the mother-in-law's house with my trailer (a small 6' x 4' single axle one) - after I'd been driving for over 2 hours, I got two warnings that came on at the same time - ACC not available (and an orange cruise control symbol with an exclamation mark) and also a series of warnings telling me that the trailer lights weren't working, with each one in turn (check trailer left indicator, check right trailer indicator, check left brake light, check right brake light, etc.). That then threw up an orange light bulb warning at the bottom of the VC and an orange triangle at the top.

The warnings persisted until I got to where I was going, but then stopped the car, turned it off and restarted and all warnings cleared. Same thing happened the following day when I was going to the tip with the trailer. Whilst at the tip I did notice that the front of my car was pretty caked in salt from the roads as it had been frosty overnight, but still wet so there was lots of spray and I'd had to be using the windscreen washers regularly. Restarted the car and the problems had all gone away again, but then just before getting home (about 30 mins), the same warnings came back for a third time, all warnings being triggered at exactly the same time. When I got home, I got my bottle of speed detailer and a cloth, gave the centre portion of the grill where the ACC sensor is a wipe and hey presto, problem solved.

But I cannot for the life of me explain why the front sensor for the ACC being caked in road grime and salt crud would also throw up problems with the trailer lights. Does anyone have a theory as to why these would be related and both come on (more than once) at exactly the same time?