Keyless entry and start non functional

[steamship]

Originally Posted by mannyo

Where can I find the module, to check the connections. If it is not the connections, I will have to sell the car in its current state with non operational keyless system as I cannot currently afford to replace anything.

Plus the right rear parking sensor has decided to not like the cold and damp, but thats for another post.

Check out 53-SSP 287 Audi A8 03 - Electrical Components.pdf from page 78. It's the J518 module, which according to the document is located in the drivers footwell. The illustration on page 80 gives a better understanding, but because ours are RHD, it will be in the passenger footwell.

As for the parking sensor, I know you can remove the outer rear parking sensors without taking the bumper off. I know getting a colour-coded one would be ideal, but since you're selling it, a cheaper option would be buying one off eBay. I replaced one of mine recently with one I purchased almost two years ago (£23.00 for 4). It's black on a blue car, which isn't too bad, but since one faulty sensor disables the entire system, I'd rather sell the car with a working system and a black sensor than buying a very expensive coloured one, especially if funds are tight.