Big Shout Out to this forum and to Simon Ryder👍👍
Like most on this thread I hadn't used my Audi A4 Avant 3.0TDI Sport 66 plate much over the last 6 months. It's our second car and only done 10k - So like a new car.
Yesterday after using the car for first time in a couple of months the brakes were a bit sticky but freed off after a few miles. To be expected sometimes after a lay up. About 20miles on I got the Brake Servo:restricted warning alarm. I Drove to my destination about 10 miles further and parked. On starting up to travel home The Brake Servo & auto/start Stop warning showed. I drove home gently and parked the car.
Luckily I found this thread and first thing this morning went to my local Audi parts department and purchased the Brake pressure sensor 5Q0906207A for £74.10. The old sensor was 5Q0906207 but the new one by a different manufacturer has an A on the end. The Audi parts guy confirmed it was the correct part. I informed him of this thread and potential to damage the ABS system. He said they stocked a few sensors so that would suggest they get used often🤔
Following Simon's guide I had the old sensor exchanged in a couple of minutes. Small flat screwdriver to unclip the side catches and pull back the gray locking toggle on top of the electrical sensor. Pumped the Brake pedal a few times and started the car. The Brake Servo restricted alarm disappeared but the autostart stop disabled warning still showed. I turned off the engine and waited till everything was off and dash blank. Then restarted the car and the auto start stop warning also disappeared. So success thanks to this thread and Simon's guide. It does feel like a win and no damage to the ABS system so over the moon👍😁
If you have a 66 plate Audi and come across this thread I would seriously consider swoping the sensor before you have a failure and possible bill for an abs system pump.
Thanks again
Chris
