Matthew Bryan

I will scan the car and post the results and see if it helps

Mud

I'm not upset at all, I simply tried to give you a hand. What you do or buy is up to you. I get that its not easy and hazardous to work on the side of the road.
As mentioned its a clue regarding moving the sensor wiring or getting the connector wet, then seeing issues. Checking the harness further upstream can also be of value.
A scanner will be of benefit to see what's not communicating on the network, especially for an intermittent problem. But also as mentioned a scantool that can access the vehicle systems and modules is of much greater value than a generic obd version.
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Matthew Bryan

these are the codes I pulled

bmwpowere36m3

Looks like the two main permanent faults are related to the steering column module and Direct Select Control Unit. The latter, I'm not sure if its referring to the ISM or the direct select lever on the column. Is the direct select lever a separate module or part of the steering column module?

This may be useful:

Matthew Bryan

Thank you thank you
I will absorb what I can fro the info you sent me and get back here when ive diagnosed further ...

bmwpowere36m3

I'd focus on the steering column module (SCM)... if your scanner supports live data (actual values), then you can read out the "status" of the direct select lever, cruise control and steering angle. The SCM supports: steering angle, combination switch, steering wheel buttons, horn, steering column adjustment, steering wheel heater, cruise control/distronic, direct select lever and steering wheel shifter paddles.

Does the column adjustment, horn and steering wheel buttons work?

I would start by:

• communicate with the SCM (N80)
• clear codes in the SCM
• reconnect
• actuate the faulty switches and verify the module recognizes these inputs
• then I'd repeat for the remaining switches.... if they "work" then this should validate the module recognizes them

So if the some of the switches/functions work and the module recognizes those, but it doesn't the "faulty" ones (direct select, cruise and steering angle) then the module may be bad. Xentry recommends performing reprogramming of module, first and then replacement.

Other things to check would be powers, grounds and CAN to the module. I would suspect, ALL the functions would be dead if those where the case... but its always good to verify, especaiily when its an intermittent issue.

bmwpowere36m3

To add, I think W212s having center console shifters have a separate electronic selector module and/or direct select interface. Those with column shifters, I believe its integrated into the steering column module based on what I see in Xentry.

Matthew Bryan

I did some live checks and there is no communication with gear selector...I was able to use the computer to change the gears and drive it like that .....
Ordered in a replacement steering squib.....with the limiter,gear selector and washer wiper indicator stalks and after fitting that most of the faults disappeared .
Seems to work well
I can not find a way to reset the airbag on the steering wheel
when the car comes to a stop at a roundabout or stop sign it’s eco system switches engine off and restarts when I lift off the brake but then immediately switches the car off and I have to manually restart it .
Anyone had an issue with eco start restarting after stop only to **** down again almost immediately

bmwpowere36m3

Great, so a new steering column module solved all those CAN issues between the SCM and Drive Selector. You have an SRS light and can't figure out how to reset, correct? Some scanners are not capable of doing the SRS resets.

Now as far as your new issue, did you perform the start-up for the steering column module? I pretty sure there's a start-up and it might include steering angle calibration. Beyond that, again... I start by making sure both main and auxiliary batteries are FULLY charged (use a external charger on both). Then disconnect he main battery for 10 min. Reconnect the battery and read for codes. Write them down and clear them all.

Go out and drive, replicate issue, come back and scan for codes.

Matthew Bryan

s the steering squib solved all the issues and by using a different mercedes vehicle model in my diagnostics,Delphi 150......I was able to access the reset for steering wheel air bag ...so the wiggling of the wheel sensor was a red hearing that managed to reel me in for some time before the line snapped...
thanks everyone who posted reply and spent the time and patience for me..