[valley_nomad]

I got a letter from BMW regarding the following safty recall

"BMW Recall – 3-Series Sedan and Wagon– Front Side Marker Lights, F30 F31, 15V520000"

I was trying to fix it by myself because I don't want to lose all the coding I have done. But when I checked FEM_BODY 3063 MAPPING_SIDEMARKER_L_OUTPUT and MAPPING_SIDEMARKER_R_OUTPUT, I found that their values were set to fra_v_l and fra_v_r respectively, which means something else prevents side marker lights from being on. Does anyone know if the problem can be corrected by coding? If so, how?

[valley_nomad]

After a quick check I found that someone made a mistake in several v14 FEM_BODY CAFDs such that the voltage for front side marker lights in US version 3 series with Halogen headlights was programmed to zero volt instead of desired 8.2 volt. More specifically, the value for function parameters MAPPING_SIDEMARKER_L_PWM_LEVEL_STANDARD and MAPPING_SIDEMARKER_R_PWM_LEVEL_STANDARD was set to off (00) instead of 8.2V (52).

Update: Success! After I changed those values, the amber front side marker lights start working again.
So if your car is one of 7500+ 3 series on this recall list and do want the feature without sending it back to BMW dealership, you can code it as below:

FEM_BODY / 3063 / MAPPING_SIDEMARKER_L_PWM_LEVEL_STANDARD = 8.2 V (werte=52)
FEM_BODY / 3063 / MAPPING_SIDEMARKER_R_PWM_LEVEL_STANDARD = 8.2 V (werte=52)

Also make sure:
FEM_BODY / 3063 / MAPPING_SIDEMARKER_L_OUTPUT = fra_v_l (werte=0D)
FEM_BODY / 3063 / MAPPING_SIDEMARKER_R_OUTPUT = fra_v_r (werte=0E)

There are several other PWM LEVEL values which can provide different luminance for the marker lights

[Adamr916]

Did it stop the tien signals from working, or just them running? I've coded out the running lights and just have the turn signal now and haven't had any issue that I can tell

[IndotagSwizz]

I got the letter in the mail as well but I don't actually care I think it looks better that way, I'm leaving mines off

[tboooe]

Originally Posted by IndotagSwizz

I got the letter in the mail as well but I don't actually care I think it looks better that way, I'm leaving mines off

+1!!! Mine have been off since the first week I got my car!

[Gabreigns]

Originally Posted by valley_nomad

After a quick check I found that someone made a mistake in several v14 FEM_BODY CAFDs such that the voltage for front side marker lights in US version 3 series with Halogen headlights was programmed to zero volt instead of desired 8.2 volt. More specifically, the value for function parameters MAPPING_SIDEMARKER_L_PWM_LEVEL_STANDARD and MAPPING_SIDEMARKER_R_PWM_LEVEL_STANDARD was set to off (00) instead of 8.2V (52).

Update: Success! After I changed those values, the amber front side marker lights start working again.
So if your car is one of 7500+ 3 series on this recall list and do want the feature without sending it back to BMW dealership, you can code it as below:

FEM_BODY / 3063 / MAPPING_SIDEMARKER_L_PWM_LEVEL_STANDARD = 8.2 V (werte=52)
FEM_BODY / 3063 / MAPPING_SIDEMARKER_R_PWM_LEVEL_STANDARD = 8.2 V (werte=52)

Also make sure:
FEM_BODY / 3063 / MAPPING_SIDEMARKER_L_OUTPUT = fra_v_l (werte=0D)
FEM_BODY / 3063 / MAPPING_SIDEMARKER_R_OUTPUT = fra_v_r (werte=0E)

There are several other PWM LEVEL values which can provide different luminance for the marker lights

How do you reduce the brightness of the side marker light as you mentioned? Not to turn it off completely but make it dim. But full intensity when the turn signals are on.

[Almaretto]

Originally Posted by Gabreigns

How do you reduce the brightness of the side marker light as you mentioned? Not to turn it off completely but make it dim. But full intensity when the turn signals are on.

Pick a lower value

[yaclexx]

can you turn off the side markers in a car with halogen lights and not FEM_BODY module?
Just want them on when turning.

[Almaretto]

Originally Posted by yaclexx

can you turn off the side markers in a car with halogen lights and not FEM_BODY module?
Just want them on when turning.

No F20/F3x/F8x would exist/function without fem_body ECU.

Basic rule: if not TMS/LHM or FLE exist, then code in FEM.

[yaclexx]

Originally Posted by Almaretto

No F20/F3x/F8x would exist/function without fem_body ECU.

Basic rule: if not TMS/LHM or FLE exist, then code in FEM.

this is a 2017 f25 sDrive28i
It does have FEM but I cant find the parameters to change to get the side markers to be off all the time.

[Almaretto]

Originally Posted by yaclexx

this is a 2017 f25 sDrive28i
It does have FEM but I cant find the parameters to change to get the side markers to be off all the time.

This is an F30 thread.

F25 uses same architecture as F010 (eg, FRM, CAS, etc). Similar rules still apply: use LHM/TMS if present; if not change in FRM.

[doddy550]

Originally Posted by Gabreigns

How do you reduce the brightness of the side marker light as you mentioned? Not to turn it off completely but make it dim. But full intensity when the turn signals are on.

Is anyone else experiencing a flickering with these settings? I've tried different voltages, but changes the brightness only, but doesn't stop the flickering.

[Gabreigns]

Originally Posted by doddy550

Is anyone else experiencing a flickering with these settings? I've tried different voltages, but changes the brightness only, but doesn't stop the flickering.

Agreed. I was never able to do this successfully. I instead just turned them off when headlights are on. But work as regular turn signals on full brightness.