Coding out heated steering wheel?

[calubi]

I have an M Performance steering wheel installed (came with the car), and I'm seeing code 030481 being stored in the FEM_BODY module.

030481: Steering wheel module (SWM), steering wheel heating NTC contact: Internal fault

My understanding is that the M Performance wheel does not have heating, and I don't really want it anyway. So I'm trying to code it out so the fault code goes away.

Has anyone successfully done this?

I tried coding out package 248 (heated steering wheel) in esys, but the fault code still remains after clearing faults.

What I tried:

1. Read FA, remove SALAPA element 248, save as new FA
2. Go to Coding, open new FA, activate it, read SVT, code FEM_BODY module
3. Edit FEM_BODY FDL to re-add some coding I had done (radio off on door open, doors unlock on ignition off)
4. Code FDL
5. Clear faults in ISTA+

Unfortunately the NCD compare tool fails to open the generated .ncd files so I cannot get a list of FEM_BODY differences from removing package 248.

Is there another module that needs to be coded too? Or does anyone have a list of FDL changes to achieve the same?

Thanks!

[psyki]

Perhaps the SZL (or LWS) module? It is the steering column control unit.

[calubi]

Originally Posted by psyki

Perhaps the SZL (or LWS) module? It is the steering column control unit.

I don't see either of those... do they have a different name for F020?

[psyki]

Originally Posted by calubi

I don't see either of those... do they have a different name for F020?

There are some steps you might have missed after editing your FA. After you saved it open VCM under the Expert Mode menu, then under the 'File' tab open your saved FA. Right-click on the FA folder and select 'Calculate FP'. Expand the SALAPA folder and verify that the right codes are there (or not). Then select the 'Master' tab at the bottom and click the 'Write FA FP' button in the FA FP section. This actually writes the FA to your car.

After all that, then open the Coding menu and activate your FA, read SVT and VO code FEM_BODY.

You should still see SZL though, if you don't try clicking 'Read ECU' instead of 'Read VCM'.

[calubi]

Ok, I'll try that when I get time, but I thought writing the FA to the vehicle was not necessary for VO coding? The guides I've seen suggest just "load"ing the modified FA in the Coding screen, instead of writing it to the vehicle and then "read"ing it. That's how I've coded other modules in the past without issue.

[jmciver]

I have the M-Performance steering wheel as well (retro fitted it)... But why bother trying to code this out? The fault code does not hurt anything or limit any functionality in the car - and there is no CEL on your dash. Also, the BMW procedures to retrofit the different M-Performance steering wheel variants say nothing about any re-coding or updating the car's software after installation.

[Poochie]

Originally Posted by calubi

Has anyone successfully done this?

To code out the heated steering wheel option:


[COLOR="Green"]FEM_BODY: [/COLOR]

CODDT_BYTE_00_SZL_LIN = [COLOR="DarkRed"]Nicht_aktiv (0X00)[/COLOR]

LIN_VARIANTE_LRE = [COLOR="DarkRed"]Nicht_aktiv (0XFF)[/COLOR]

LIN_VARIANTE_SZL = [COLOR="DarkRed"]Nicht_aktiv (0XFF)[/COLOR]

LRE_Verbaut = [COLOR="DarkRed"]Nicht_aktiv (0X00)[/COLOR]