Post by augustine on Mar 18, 2018 22:52:49 GMT
I am looking for help trying to sort out some problems with my ABS/ESP system.
The car is a 2000 A8L Quattro w/4.2L.
Car drove fine, no warning lights or buzzers, and it sat for a couple days. On the next start up the brake and ABS warning lights are on/blinking constantly and I get three long beeps from the dash. I should note that I have done no recent work to the car, and have done no adaptations nor replaced any parts in the last several months. Car drives and shifts fine, but ABS and ESP are disabled. I bought my OBDEleven Pro after these issues cam up in hopes of finding the solution to this problem myself. Local mechanics have proven pretty worthless when it comes to special Audi issues.
There are two codes present in the ABS module:
01044- Control Module incorrectly coded (static)
00778- Steering Angle Sensor (intermittent)
The ABS module coding is listed as 00000, which is obviously not correct. I have tried reprogramming the module using the appropriate login (05497) and coding (08397). I get as far as having the module accept the coding, but I cannot calibrate the steering angle sensor. I keep getting a "communication interrupted" error message when I try to get into the "basic settings, 01" menu for steering angle sensor (I can access the other basic settings like brake bleed just fine). I have tried turning the wheel left and center, and tried using the 40168 security login before attempting the steering calibration also with no luck. The ABS module then forgets the coding I gave it and reverts back to 00000. Under the live data menu I can see the steering angle sensor values, which are within the normal parameters and they respond appropriately when the wheel is turned. So it seems the steering sensor is doing its part.
My question really is this, am I doing the recoding process wrong or is this an indication of a bad ABS module or bad wiring harness?
Thanks for any help you can provide.
P.S. Doesn't seem related, but just in case, I also have a P1744 trouble code- Tiptronic switch, recognition short circuit to ground (static). Transmission will not allow Tiptronic shift setting, but shifts fine in normal modes. I never use the Tiptronic side, so I have no idea how long it hasn't been working, but no MIL light before now.
The car is a 2000 A8L Quattro w/4.2L.
Car drove fine, no warning lights or buzzers, and it sat for a couple days. On the next start up the brake and ABS warning lights are on/blinking constantly and I get three long beeps from the dash. I should note that I have done no recent work to the car, and have done no adaptations nor replaced any parts in the last several months. Car drives and shifts fine, but ABS and ESP are disabled. I bought my OBDEleven Pro after these issues cam up in hopes of finding the solution to this problem myself. Local mechanics have proven pretty worthless when it comes to special Audi issues.
There are two codes present in the ABS module:
01044- Control Module incorrectly coded (static)
00778- Steering Angle Sensor (intermittent)
The ABS module coding is listed as 00000, which is obviously not correct. I have tried reprogramming the module using the appropriate login (05497) and coding (08397). I get as far as having the module accept the coding, but I cannot calibrate the steering angle sensor. I keep getting a "communication interrupted" error message when I try to get into the "basic settings, 01" menu for steering angle sensor (I can access the other basic settings like brake bleed just fine). I have tried turning the wheel left and center, and tried using the 40168 security login before attempting the steering calibration also with no luck. The ABS module then forgets the coding I gave it and reverts back to 00000. Under the live data menu I can see the steering angle sensor values, which are within the normal parameters and they respond appropriately when the wheel is turned. So it seems the steering sensor is doing its part.
My question really is this, am I doing the recoding process wrong or is this an indication of a bad ABS module or bad wiring harness?
Thanks for any help you can provide.
P.S. Doesn't seem related, but just in case, I also have a P1744 trouble code- Tiptronic switch, recognition short circuit to ground (static). Transmission will not allow Tiptronic shift setting, but shifts fine in normal modes. I never use the Tiptronic side, so I have no idea how long it hasn't been working, but no MIL light before now.