SparTTan

for me? The parts guys at the dealership are IDIOTS and have no idea what this part is or what it is supposed to do (even after I attempted to explain the different sensors and components of the ESP system in simple terms). So they can't find the part until I come back with a part number.

boostedTT

But I would find another dealer that knows what they are doing....

SparTTan

I went after work the other day. They couldn't even locate it in the diagrams. They asked if I had actually seen the part. All I know it is located under/behind the glove box, and mine is bad (as indicated by the ESP and ABS lights and the DTC I am getting with a VAG scan). I don't want to remove the glove box until I have the replacement part in hand, ready to go in.

The dealership closer to my house is typically more competent, but I can't get there during the week before they close.

TTagz

I had to tell her which screen to pull up on the etka then point to it.

boostedTT

OK Now I remember. I am a bit tired today. I scanned my car a week ago because the ESP light was coming on, CAG said something about a lateral ABS blah blah, but basically my battery is bum, wont hold a charge at all, going to dealer today. Having a lot of other electrical issues,

SparTTan

"Hal-deck? What the heck is that?"

boostedTT

I find myself really worried when I can out-tech-speak people at a dealer that actually get paid to do this.

TTagz

I've had to show the service manager how to diagnose problems before

DasTT

Prior to chassis number 8N-2-014 401, the sensor was split into yaw - 1J0 907 657 A and accelleration - 1J0 907 651 A, after that chassis number, it's a combo sensor and is 7E0 907 652 A for quattro (should be yours) and 7E0 907 655 A for FWD.

For your parts guy, it's in group 9 subgroup 27.

SparTTan

This is the code I got:

Address 03 -------------------------------------------------------
Controller: 8N0 907 379 E
Component: ESP 20 CAN V005
Coding: 18446
Shop #: WSC 01236
1 Fault Found:
01279 - Longitudinal Acceleration Sensor (G251)
27-10 - Implausible Signal - Intermittent


From the Bentley repair manual:
Longitudinal acceleration sensor -G251-, removing and installing

Removing

- Remove glove box:

Repair Manual , Body Interior, Repair Group 68; Trays, compartments and trim

- Unplug electrical connector -2-
- Use a screwdriver to pry mount off longitudinal acceleration sensor -arrows- and remove sensor -G251- -1-.

Note: The longitudinal acceleration sensor is not resistant to shocks or impact.
Do not install a sensor which has dropped to the ground otherwise proper operation is not ensured.


Installing

Install in reverse sequence; note the following points:

- Initiate basic setting for longitudinal acceleration sensor -G251-.

<img src="http://www.msu.edu/~lytleric/sensor.gif">