340i Xhp Launch Control Failure

Slow330 · 01-21-2022, 08:19 AM

Has anyone ever had the code 48068c pop up, i tried doing launch control the other day, i mashed down the break pedal hard but the car didn't hold and slipped a bit and went forward a little until i hit the brake, so this time i pressed the brake even harder and launch control worked but the car lost traction like it was a rwd car even though its xdrive car immediately threw up a chassis stabilization error.
Heres a video of exactly what happened

Any insight and if i should be worried would be appreciated

Skyhigh · 01-21-2022, 08:40 AM

Is it the first time you use LC? Have you had problems like that before or has it always worked fine? Anything new since then?

Slow330 · 01-21-2022, 08:41 AM

Quote:

Originally Posted by Skyhigh

Is it the first time you use LC? Have you had problems like that before or has it always worked fine? Anything new since then?

Ive used lc before on just stage 1 car no xhp and it was fine

Skyhigh · 01-21-2022, 08:43 AM

What's your setup now?

Error seems to be related to the transfer case. Hopefully not broken…

Slow330 · 01-21-2022, 08:46 AM

Quote:

Originally Posted by Skyhigh

What's your setup now?

Error seems to be related to the transfer case. Hopefully not broken…

So after this happened i cleared the errors and turned the car off and let it cool down, drove around after and it seemed fine no errors thrown and it wasnt jerky of anything

Skyhigh · 01-21-2022, 08:49 AM

Have you tried LC again? I mean there isn't much to lose - if there is a problem, there is a problem whether you provoke it or not. And if it was sporadic - at least you would know...

Slow330 · 01-21-2022, 08:50 AM

Quote:

Originally Posted by Slow330

Quote:

Originally Posted by Skyhigh

What's your setup now?

Error seems to be related to the transfer case. Hopefully not broken…

So after this happened i cleared the errors and turned the car off and let it cool down, drove around after and it seemed fine no errors thrown and it wasnt jerky of anything

Car is fully stock besides bm3 stage 1 and xhp stage 2

Slow330 · 01-21-2022, 08:57 AM

Quote:

Originally Posted by Skyhigh

Have you tried LC again? I mean there isn't much to lose - if there is a problem, there is a problem whether you provoke it or not. And if it was sporadic - at least you would know...

I tried lc again after just driving around normally this time i pushed the brake pedal through the floor and it was fine still broke a little traction but im pretty sure thats normal nothing like the video though where im just sliding everywhere

1slowb58 · 01-21-2022, 11:18 AM

The newer BM3 tunes allow you build quite a bit of boost while launching. You likely launched too hard and the trans stopped you. The same thing has happened to me a few times, and like you said the error just goes away.

Slow330 · 01-21-2022, 11:31 AM

Quote:

Originally Posted by 1slowb58

The newer BM3 tunes allow you build quite a bit of boost while launching. You likely launched too hard and the trans stopped you. The same thing has happened to me a few times, and like you said the error just goes away.

So i shouldnt be worried about any underlying tranny failures or transfer case failures? I only have 44k miles never tuned or abused before

1slowb58 · 01-21-2022, 03:20 PM

Not from what happened just try not to let it happen again. Watch your boost as you launch, try not to hold it for too long.

Glemm1970 · 01-21-2022, 06:45 PM

0-100 3,2s LC
0-100 2,9xx No LC,Start 1gear
0-100 2,8xx No LC,Start 2gear

01-21-2022, 08:19 AM	#1
Slow330 Private 3 Rep 60 Posts Drives: Bmw 330i Join Date: Apr 2021 Location: NY iTrader: (0)	Has anyone ever had the code 48068c pop up, i tried doing launch control the other day, i mashed down the break pedal hard but the car didn't hold and slipped a bit and went forward a little until i hit the brake, so this time i pressed the brake even harder and launch control worked but the car lost traction like it was a rwd car even though its xdrive car immediately threw up a chassis stabilization error. Heres a video of exactly what happened Any insight and if i should be worried would be appreciated
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01-21-2022, 08:40 AM	#2
Skyhigh Brigadier General 1887 Rep 3,872 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Is it the first time you use LC? Have you had problems like that before or has it always worked fine? Anything new since then? __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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01-21-2022, 08:43 AM	#4
Skyhigh Brigadier General 1887 Rep 3,872 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	What's your setup now? Error seems to be related to the transfer case. Hopefully not broken… __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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01-21-2022, 08:49 AM	#6
Skyhigh Brigadier General 1887 Rep 3,872 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	Have you tried LC again? I mean there isn't much to lose - if there is a problem, there is a problem whether you provoke it or not. And if it was sporadic - at least you would know... __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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01-21-2022, 11:18 AM	#9
1slowb58 Private 40 Rep 99 Posts Drives: 340i xDrive Stage 3 Join Date: May 2021 Location: Toronto iTrader: (0)	The newer BM3 tunes allow you build quite a bit of boost while launching. You likely launched too hard and the trans stopped you. The same thing has happened to me a few times, and like you said the error just goes away.
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01-21-2022, 03:20 PM	#11
1slowb58 Private 40 Rep 99 Posts Drives: 340i xDrive Stage 3 Join Date: May 2021 Location: Toronto iTrader: (0)	Not from what happened just try not to let it happen again. Watch your boost as you launch, try not to hold it for too long.
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01-21-2022, 06:45 PM	#12
Glemm1970 Lieutenant 316 Rep 420 Posts Drives: BMW M140IX. Join Date: Apr 2020 Location: Vladivostok iTrader: (0)	0-100 3,2s LC 0-100 2,9xx No LC,Start 1gear 0-100 2,8xx No LC,Start 2gear __________________ M140IX. Turbo Pure 800 Cast.
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