So im in the process of getting my ABS module replaced, witing for the part to come into the dealer.
They seem semi-confindent this is my problem, but here are my symptoms:
i was cruising on cruise control on the highway when the ABS, BAS ESP, and Lamp Out Indicator all started flashing. My speedometer started jumping from 70 to 40 back and forth. in unison with the ABS light blinking. and i could hear a relay or something clicking near the headlight switch area. The light out indicator was somehow tied to my foglights being on, and when i switched them on and off it was affecting the speedo jumping and abs light flashing. the first dealer reset all the codes, and all the lights were out. then i started driving and they came back on down the road. they seem to randomly come on at startup of the car. sometimes jsut the BAS ESP light is on by itself.

then the new symptom: the first time i stop the car i hear twice a 1 sec grinding noise come from under the car like trying to start a running car.

 

It always happens twice and seems to bog down the engine a few hundred rpm. so do you guys think its the ABS module? thats what the second dealer is saying after diagnosing it for a full day. obviously im gonna try that first but anything else it could be? speed sensors? why would it affect the engine at a redlight?

 

My first guess is a short. Hopefully in the ABS, since the engine bogs when stopped. If it's not that I'd check the wiring harness. Good luck!

 

here's what i did this morning:

started the car and popped the hood and just let it warm up at idle in park

From cold start @ 56 degrees.

Took about 7 minutes from start

when the coolant gauge reached the second line, (normal operating temp is at the 3rd line)

Directly from engine area stumbled twice but still idling fine.

Twice about 15 seconds apart.

 

my car has had the CAB replaced, the steering angle sensor replaced, the yaw rate sensor replaced.

Now they are digging around in the wiring and feel as if they are back at square one.

the techs are scratching their heads, and claim someone has messed with the wiring in the past based on the condition of it.

if the highbeams are on and i beep the horn, it makes the ABS light flash.

the foglights cause the speedo jumping around issue and cruise control to cutoff

BAS ESP light will be off at start but comes on as soon as you move the steering wheel

radio gets quieter when highbeams or foglights are turned on

will it help to call the dealer i bought the car from? i bought it certified pre-owned 8 year 80,000 miles.

i can't believe this is happening when all the bankruptcy issues are happening.

 

Issues resolved!!!

It was a loose Ground causing all the problems.

The car is back to normal, finally!!

I will type up the service receipt later today with the wording that they used.

 

here is my summarized service record about the resolution to my problem:

DTC 1210 CAB undervoltage and 1035 no response from steering angle sensor. relearned steering angle sensor but DTC 1035 returned. diagnostic procedures indicate faulty CAB and faulty Steering angle sensor. Replaced CAB and Steering angle sensor.

Also replaced clockspring with steering angle sensor to address airbag light being on.

Nearly a month later i got the car back again:

DTC's 1035, 1174, 1175, 1178, 1210

load tested and voltage drop tested all related power and ground circuits. checked continuity of all wiring between yaw sensor and CAB. SAS sense wire intermittantly showing 12v. installed temporary jumper wire over SAS sense and 5 volt supply circuits to yaw sensor. disassembled instrument panel and steering column to gain access to system wiring for inspection. disassembled electrical connectors at SAS and yaw sensor to test fit over component terminals. tightened terminals and re-assembled vehicle. found ground G100 on left front fender to be loose. 5=12

Tightened loose ground nut on LF fender (G100)

Replaced yaw sensor.

 

Yet again, German Genius exasperated by a tiny detail, like 1 loose wire. Don't mention the war.

 

Quote:Tightened loose ground nut on LF fender (G100)

Where exactly on the front fender was this loose ground nut.
I wanna go out to my garage and check mine right now.
Not that I am having any of the nightmare you had but .......

Glad they found this out and thanks for sharing.

 

Hi.. My friend got a problem. I just wanted to ask you on how you replaced your clockspring with steering angle sensor? He seems to have e real hard time. Thanks

 

im not sure exactly, it was done at the dealer