2019 M6GC Dashboard Power Loss, Differential lock, front adaptive light, Break system

Loumou233 · 06-07-2023, 10:55 PM

I bought a 27,000Mile BMW M6GC in the autumn of 2021. One morning in the winter of 2022, the HUD failed on my way out and then recovered the next day. Then there was a yellow alarm for the rear differential lock when reversing, but the driving was not affected in any way. In the winter of 2023, the dashboard power loss appeared for the first time and my car braked at a red light intersection of traffic lights. Before the prompt appeared, the adaptive headlights failed and the engine was turned off, but the dashboard did not turn black, and the lights in the car turned on by themselves. In the past few months, when I was driving, there was a 5% probability that I would encounter dashboard powerloss and rear differential lock alarms when changing gears with automatic transmissions. I searched the web and found a post that had the same problem with M Power as I did. Link:

I'm wondering if anyone has the same problem as me and if there is a proper solution in the end?

TinCanSailor · 06-08-2023, 05:23 AM

Maybe the DME connectors are not seated properly. Did the car have any service work performed around the time this began?

Loumou233 · 06-08-2023, 05:37 PM

Quote:

Originally Posted by TinCanSailor

Maybe the DME connectors are not seated properly. Did the car have any service work performed around the time this began?

No

TinCanSailor · 06-08-2023, 08:19 PM

Do you have BimmerLink or do you feel comforbatable taking the battery out? These cars are a tad finicky when it comes to electricity and electronics.

If the battery is old or has been discharged it can have some weird and spurious effects on the car.

Loumou233 · 06-09-2023, 04:50 AM

Quote:

Originally Posted by TinCanSailor

Do you have BimmerLink or do you feel comforbatable taking the battery out? These cars are a tad finicky when it comes to electricity and electronics.

If the battery is old or has been discharged it can have some weird and spurious effects on the car.

Thanks for the advice I'll check my battery tomorrow!

arucano · 06-09-2023, 06:52 PM

Are you sure it was not a (partial) flood car? Electrical "gremlins like that are typical of bad battery and or poor plug connections. TinCan Sailer's suggestions fully supported.

TinCanSailor · 06-10-2023, 08:03 PM

Quote:

Originally Posted by arucano

Are you sure it was not a (partial) flood car? Electrical "gremlins like that are typical of bad battery and or poor plug connections. TinCan Sailer's suggestions fully supported.

Yeah I didn't even think about water intrusion. While checking the battery check the trunk area around the battery and rear fuse box for water.

06-07-2023, 10:55 PM	#1
Loumou233 Registered 0 Rep 3 Posts Drives: BMW M6GC Join Date: Jun 2023 Location: Davis,CA iTrader: (0)	2019 M6GC Dashboard Power Loss, Differential lock, front adaptive light, Break system I bought a 27,000Mile BMW M6GC in the autumn of 2021. One morning in the winter of 2022, the HUD failed on my way out and then recovered the next day. Then there was a yellow alarm for the rear differential lock when reversing, but the driving was not affected in any way. In the winter of 2023, the dashboard power loss appeared for the first time and my car braked at a red light intersection of traffic lights. Before the prompt appeared, the adaptive headlights failed and the engine was turned off, but the dashboard did not turn black, and the lights in the car turned on by themselves. In the past few months, when I was driving, there was a 5% probability that I would encounter dashboard powerloss and rear differential lock alarms when changing gears with automatic transmissions. I searched the web and found a post that had the same problem with M Power as I did. Link: I'm wondering if anyone has the same problem as me and if there is a proper solution in the end?
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06-08-2023, 05:23 AM	#2
TinCanSailor Fueled by Recycled Dinosaurs! 630 Rep 1,171 Posts Drives: F06 M6 Join Date: Dec 2019 Location: 813Bay, Fl iTrader: (2) Garage List 2015 BMW M6 Gran Coupe [9.75]	Maybe the DME connectors are not seated properly. Did the car have any service work performed around the time this began? __________________ 2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3
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06-08-2023, 08:19 PM	#4
TinCanSailor Fueled by Recycled Dinosaurs! 630 Rep 1,171 Posts Drives: F06 M6 Join Date: Dec 2019 Location: 813Bay, Fl iTrader: (2) Garage List 2015 BMW M6 Gran Coupe [9.75]	Do you have BimmerLink or do you feel comforbatable taking the battery out? These cars are a tad finicky when it comes to electricity and electronics. If the battery is old or has been discharged it can have some weird and spurious effects on the car. __________________ 2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3
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06-09-2023, 06:52 PM	#6
arucano Captain 251 Rep 631 Posts Drives: 2014 M6 Grand Coupe CP Join Date: May 2017 Location: Kingwood TX iTrader: (0) Garage List 2014 BMW M6 GC [10.00]	Are you sure it was not a (partial) flood car? Electrical "gremlins like that are typical of bad battery and or poor plug connections. TinCan Sailer's suggestions fully supported. __________________ F06 M6 Grand Coupe CP Sapphire Black Metallic The drive is the destination
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