Hello i just bought a 2001 audi tt 225 quattro. It has a few issues that i hope someone will help with. Ive looked all over these threads and havent found a real solution. First off when i start the car it beeps loud 3 times with no check eng light or anything the car says "OK". also the Temp gage says the car is at like 1/4 when fully warmed up. When i turn it off and back on it goes to normal and slowly goes back to 1/4. The car does have an aftermarket "stage 2" turbo that was installed recently professionally with warranty and stuff. and last the head light switch is reversed.... the off is on and the headlights on is off. If anyone can help i would appreciate it.. Thanks!