yellow "MDM" light in dash inoperable

Sgt. Schultz · 07-17-2019, 11:24 AM

My yellow MDM light in the cluster stopped illuminating out of nowhere - used to come on when pressing the "M" button on the steering wheel. Tried drilling thru all the iDrive menus but didn't find anything out of the ordinary.

Car seems fine otherwise - any insight apprecaited, TIA...

Ngilbe36 · 07-17-2019, 11:32 AM

Quote:

Originally Posted by Sgt. Schultz

My yellow MDM light in the cluster stopped illuminating out of nowhere - used to come on when pressing the "M" button on the steering wheel. Tried drilling thru all the iDrive menus but didn't find anything out of the ordinary.

Car seems fine otherwise - any insight apprecaited, TIA...

The setting for your M-mode must no longer be setting your traction control system into MDM. If that isn't the issue and you can feel it in MDM you probably just need a new LED which I have not heard of happening.

amrazM · 07-17-2019, 09:17 PM

Plus one see if m drive sets dsc to mdm

Sgt. Schultz · 07-18-2019, 10:51 AM

sorry for my ignorance, but how can I determine that?

I've never understood the difference in the M button and the MDM mode, shamefully... I've read about it but not understanding it (I'm a dolt apparently lol)

cae93 · 07-18-2019, 10:59 AM

Quote:

Originally Posted by Sgt. Schultz

sorry for my ignorance, but how can I determine that?

I've never understood the difference in the M button and the MDM mode, shamefully... I've read about it but not understanding it (I'm a dolt apparently lol)

Your "M" button just sets the car to a set of presets that you can configure through the I-drive menu. "MDM" is one of the setting for the stability control, your choices being "nanny me", "help me out a bit (MDM)" or "let me do this myself" (stability control off). The "M" setting is more than just MDM, it sets the shift speed, suspension (if you have EDC), steering feel/weight etc. Most people set this up to the "sport" mode for their car when they really want to drive, but you could just as easily set it up for "MOM' mode, where everything was a soft/safe as possible.

Scharbag · 07-18-2019, 11:23 AM

Quote:

Originally Posted by cae93

Your "M" button just sets the car to a set of presets that you can configure through the I-drive menu. "MDM" is one of the setting for the stability control, your choices being "nanny me", "help me out a bit (MDM)" or "let me do this myself" (stability control off). The "M" setting is more than just MDM, it sets the shift speed, suspension (if you have EDC), steering feel/weight etc. Most people set this up to the "sport" mode for their car when they really want to drive, but you could just as easily set it up for "MOM' mode, where everything was a soft/safe as possible.

Now that is a great response and why these forums are helpful. Kudos to you for simply sharing good info.

Sgt. Schultz · 07-22-2019, 09:29 AM

thanks much for the detailed insight, it's helpful and appreciated - I'll dig deeper

07-17-2019, 11:24 AM	#1
Sgt. Schultz New Member 20 Rep 28 Posts Drives: 2008 M3 convertible Join Date: Oct 2018 Location: Paulland, Paullywood iTrader: (0)	yellow "MDM" light in dash inoperable My yellow MDM light in the cluster stopped illuminating out of nowhere - used to come on when pressing the "M" button on the steering wheel. Tried drilling thru all the iDrive menus but didn't find anything out of the ordinary. Car seems fine otherwise - any insight apprecaited, TIA... __________________ current: '08 M3 vert / '87 930 / '13 GL450 previous: '07 S6 / '98 M3 vert / '01 M5 / '05 S600 biturbo12 / '96 993 C2 cab / '01 S8 / '58 TR3A / '95 S6 6spd / '87 190E 2.3-16 / '88 M5 / '80 242GT / '76 VW Westfalia
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07-17-2019, 09:17 PM	#3
amrazM mTekMods 2132 Rep 2,893 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	Plus one see if m drive sets dsc to mdm
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07-18-2019, 10:51 AM	#4
Sgt. Schultz New Member 20 Rep 28 Posts Drives: 2008 M3 convertible Join Date: Oct 2018 Location: Paulland, Paullywood iTrader: (0)	sorry for my ignorance, but how can I determine that? I've never understood the difference in the M button and the MDM mode, shamefully... I've read about it but not understanding it (I'm a dolt apparently lol) __________________ current: '08 M3 vert / '87 930 / '13 GL450 previous: '07 S6 / '98 M3 vert / '01 M5 / '05 S600 biturbo12 / '96 993 C2 cab / '01 S8 / '58 TR3A / '95 S6 6spd / '87 190E 2.3-16 / '88 M5 / '80 242GT / '76 VW Westfalia
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07-22-2019, 09:29 AM	#7
Sgt. Schultz New Member 20 Rep 28 Posts Drives: 2008 M3 convertible Join Date: Oct 2018 Location: Paulland, Paullywood iTrader: (0)	thanks much for the detailed insight, it's helpful and appreciated - I'll dig deeper __________________ current: '08 M3 vert / '87 930 / '13 GL450 previous: '07 S6 / '98 M3 vert / '01 M5 / '05 S600 biturbo12 / '96 993 C2 cab / '01 S8 / '58 TR3A / '95 S6 6spd / '87 190E 2.3-16 / '88 M5 / '80 242GT / '76 VW Westfalia
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