Any ideas with this one. On Tuesday night cruise control working perfectly. On Wednesday, would not work at all - no warning light or any indication of problem. I drive A4 saloon 1.9TDi(130) SE. Went to main dealer. They checked fuses - no problem. They checked if stalk was working - it was and engine was receiving signal from stalk. Said that computer was not showing any problems. They were stumped by this one and said that they would refer it to national Audi dealer 'helpline' to see if same problem had arisen anywhere else. Any ideas and what do you think it will cost to repair? Thanks in advance for replies