ACC Failure and CoD Vibrations

[Gareth_rs6]

Just thought I would update the community, I have a 2014 RS6, had it from new (<30k miles). Just had the car fixed with two issues.

ACC brake guard failure warning
- had this message come up, constantly on the dash.
- Error codes showed that there was a fault in communication between the four sensors that let ACC work.
- Traced to a failing GPS antenna, which had also leaked water into the electrics, requiring full replacement (£700)

CoD Vibrations
Vibration coming from left side of the car on light throttle. Seemed to coincide with Cylinder of Demand, switch to v4.
- No errors on the car
- however on inspection found the sensor for the left engine mount hanging off (when removed under tray).
- the bolt that holds the sensor on the engine mount had sheered off
- new engine mount, sensor and bolt required + lots of labour
(£1800)

Gareth

[MikeFish]

I assume you mean a 2014 car and not 2004 given a 2004 car won't have ACC or CoD?

[wildbore]

I wondered how much those engine mounts were going to be... Active engine mounts sound a great idea in the brochure and on a new car, but it is hard to imagine them not being almost a consumable.

[Gareth_rs6]

I assume you mean a 2014 car and not 2004 given a 2004 car won't have ACC or CoD?

Yep sorry 2014, 64 plate. Edited original post