Bentley FS 2009 adaptive cruise control (acc) issue
 

I am having issues with my 2013 gtc cruise control just stopped working nothing, dealer asked if I had front end alignment recently, I have but think it stopped working before I had done this. How did you recalibrate the radar unit yourself? I purchased a Ross tech BCD’s hex 2 to try to get a read out of what might be an issue, however I have never used this before so I hope it’s fairly user friendly. I have been doing a lot of research about what the parameters are on the adjustments if that ends up being the issue any help or advise would be welcomed. Thanks much Martin

Could you tell me the part number you used? I have ACC problems and need a new radar sensor too.

Bentley ACC Not Working
 

Mine is a faulty switch in the Break Booster 3W2612105D and Control Module 3W07907563B. These are being replaced it also appears that this possibly was result of a Rat Eating away at the Soy Based Wiring.

https://cimg7.ibsrv.net/gimg/www.6sp...7ff1761e0.jpeg
This is the original part taken out of my 09 flying spur. 3w0907567
https://cimg8.ibsrv.net/gimg/www.6sp...ee9641d3f4.png
This is the new part I got on eBay from a 2013 bentley. The part number 3w0907567B

can you tell me how u get it alignment ? do u need any special tool?

I made the alignment myself, after installing it leave bottom mesh grilles off, clear fault codes.
Take car for ride turn on cruise control if your car starts slowing down with a car in the lane next to you, go back home and use the 3 adjustment screws to center the eye ball straight, get back in the car and test again. I adjusted it about 3xs before I got it perfect. Drive in a 3 lane highway and stay in center lane, if it’s off alignment your car will begin to slow down and respond to vehicles in the left or right lane. For example if your is in the center lane and you pull close to a car in the right lane and your car starts slowing down go home and adjust the sensor eye ball more to the left. And test it again. You will probably not have an issue with cars on your left, being the sensor is located on the bottom right side of our cars. Best wishes!

Many thanks for the part numbers. Given that the 1st 2 characters are (I believe) manufacturer code and 3W is Bentley, any ideas if a (much cheaper) 3D0907567 from a Phaeton would be a direct fit? It looks the same in pictures?

Thanks,

Michael

I was going to suggest to buy the VW Phaeton radar it looks like it will work. I have bought a seat control, thrust arms, oil filters etc for a phaeton and the parts fit. Go phaeton parts and update us all.