I help my mate Waqar sort out a problem with his Mk2 1.8 estate. The TRC and VSC lights were coming on and occasionally going off intermittently, eventually staying permanently on.  He sent me a message with this problem and I suspected the stop light bulbs were blown. I did a quick check with this forum which seemed to confirm my suspicion. I packed spare bulbs with tools and my Launch OBD scanner. When I got there, I made Waqar press the brake pedal, and yes, the bulbs had blown. Only the