Drivetrain Malfunction after hard braking

diamondk1ng1 · 08-10-2023, 12:35 PM

Hey all,

This morning on my way into work the car in front of my slammed on their brakes and I did as well. As I came to a stop I got a Drivetrain malfunction warning and lost all my even gears. I pulled the codes and got the following codes. Car is a 2016 M3 DCT tunes are all stock.

Under OBD codes
P179D

Under Transmission codes
40F202
40F101

I cleared the codes and turned the car off and back on at the light and they all cleared and did not come back. The car drove as normal with no issues after. just wondering if anyone has had anything similar happen or if anyone has any idea of what the issue might be. I searched and only found M5 posts about the codes

thakid22 · 09-16-2023, 02:45 AM

First step would be to find out what those codes refer to
Typically, transmission errors during hard braking are caused by low/improper transmission fluid levels.

phefner · 09-17-2023, 09:40 PM

Acceleration Sensors. Mine went out at a track day quickly decelerating for a turn. Car had about 55000 miles on the clock. My understanding is this isn’t uncommon after some wear and tear.

diamondk1ng1 · 09-18-2023, 02:06 PM

Quote:

Originally Posted by phefner

Acceleration Sensors. Mine went out at a track day quickly decelerating for a turn. Car had about 55000 miles on the clock. My understanding is this isn’t uncommon after some wear and tear.

interesting I’ll look into that. Did you get transmission codes as well? My car is also not equipped with the EDC so I’m not sure if that makes a difference.

phefner · 09-18-2023, 02:09 PM

I did not. It’s a 2016 6MT. After the message it drove like crap. Like a Fred Flinstone car…absolutely zero dampening.

I have EDC…we are likely talking about 2 different errors.

LandonLiftz · 09-18-2023, 06:55 PM

So I had something similiar happen today ive owned my f82 for three days exiting the highway slowly braking then bam rear diffrential notice drive train malfunction notice, and one more lost all gears and car would essentialy just rev whenever I would try to give it gas had to get it towed to a bmw shop. Anyone know how expensive this is to fix or what the problem is?

08-10-2023, 12:35 PM	#1
diamondk1ng1 New Member 2 Rep 9 Posts Drives: 2017 BMW 440i M-sport Join Date: Dec 2021 Location: Phoenix, AZ iTrader: (0)	Drivetrain Malfunction after hard braking Hey all, This morning on my way into work the car in front of my slammed on their brakes and I did as well. As I came to a stop I got a Drivetrain malfunction warning and lost all my even gears. I pulled the codes and got the following codes. Car is a 2016 M3 DCT tunes are all stock. Under OBD codes P179D Under Transmission codes 40F202 40F101 I cleared the codes and turned the car off and back on at the light and they all cleared and did not come back. The car drove as normal with no issues after. just wondering if anyone has had anything similar happen or if anyone has any idea of what the issue might be. I searched and only found M5 posts about the codes
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09-16-2023, 02:45 AM	#2
thakid22 Lieutenant 287 Rep 595 Posts Drives: 2021 Bmw M340i M-Sport w/ VDC Join Date: May 2013 Location: Little Rock iTrader: (0)	First step would be to find out what those codes refer to Typically, transmission errors during hard braking are caused by low/improper transmission fluid levels.
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09-17-2023, 09:40 PM	#3
phefner Lieutenant 374 Rep 418 Posts Drives: F30 340, F80 M3 Join Date: Dec 2016 Location: Chicago iTrader: (0)	Acceleration Sensors. Mine went out at a track day quickly decelerating for a turn. Car had about 55000 miles on the clock. My understanding is this isn’t uncommon after some wear and tear. __________________ Quietly Effective
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09-18-2023, 02:09 PM	#5
phefner Lieutenant 374 Rep 418 Posts Drives: F30 340, F80 M3 Join Date: Dec 2016 Location: Chicago iTrader: (0)	I did not. It’s a 2016 6MT. After the message it drove like crap. Like a Fred Flinstone car…absolutely zero dampening. I have EDC…we are likely talking about 2 different errors. __________________ Quietly Effective
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09-18-2023, 06:55 PM	#6
LandonLiftz Private 10 Rep 61 Posts Drives: BMW M4 2018 Join Date: Jul 2023 Location: Dallas iTrader: (0)	So I had something similiar happen today ive owned my f82 for three days exiting the highway slowly braking then bam rear diffrential notice drive train malfunction notice, and one more lost all gears and car would essentialy just rev whenever I would try to give it gas had to get it towed to a bmw shop. Anyone know how expensive this is to fix or what the problem is?
	Appreciate 0 Quote