Couldn't even get the bolts undone on the wheel speed sensors, let alone clean them. Instead I disassembled the brake light switch and cleaned that which had the same result of finally making the two amigos bugger off. I also went on a side...

Long time lurker, first time poster: Cleaned all the contacts on the numberplate light to make it work again - Bloody thing failed my MOT! Next job, clean all the wheel speed sensors and disks in the hope that I won't have to replace any.