transmission malfunction: max output not available.

Chas1973 · 05-15-2023, 02:23 AM

Hi everyone,

I've had my m4 for 4 years now. It has 96k miles and recently the transmission has been acting up and upshifting on its own on hard Acceleration.
And now it goes into limp mode.

I've tried flushing the transmission fluid, changed the oil, un plugged the battery. I installed charge pipes now just in case the stock ones were leaking, no luck.

I'm starting to think it could be the injectors, coils or fuel pump.

Any advice?

geometry dash bloodbath

M5Rick · 05-15-2023, 05:59 AM

That's normal for engine to go into limp mode to protect it from the added stress of a malfunctioning trans, I'd take it in to the stealer for a detailed analysis of the gearbox action.

pbonsalb · 05-15-2023, 06:31 AM

What codes have you been getting? I hope you are not just looking at the generic drivetrain malfunction message and then buying parts in the hope one of them might fix the problem. If you don’t have a scan tool with BMW specific software you should buy one. 30 years ago, unplugging the battery would reset the computer; not today. Your latest guesses could be expensive.

05-15-2023, 02:23 AM	#1
Chas1973 Registered 1 Rep 1 Posts Drives: mazda Join Date: May 2023 Location: USA iTrader: (0)	transmission malfunction: max output not available. Hi everyone, I've had my m4 for 4 years now. It has 96k miles and recently the transmission has been acting up and upshifting on its own on hard Acceleration. And now it goes into limp mode. I've tried flushing the transmission fluid, changed the oil, un plugged the battery. I installed charge pipes now just in case the stock ones were leaking, no luck. I'm starting to think it could be the injectors, coils or fuel pump. Any advice? geometry dash bloodbath Attached Images
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05-15-2023, 05:59 AM	#2
M5Rick General 60080 Rep 19,555 Posts Drives: M5 F10 DCT Gunmetal Join Date: Aug 2018 Location: Southern England iTrader: (0)	That's normal for engine to go into limp mode to protect it from the added stress of a malfunctioning trans, I'd take it in to the stealer for a detailed analysis of the gearbox action.
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05-15-2023, 06:31 AM	#3
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	What codes have you been getting? I hope you are not just looking at the generic drivetrain malfunction message and then buying parts in the hope one of them might fix the problem. If you don’t have a scan tool with BMW specific software you should buy one. 30 years ago, unplugging the battery would reset the computer; not today. Your latest guesses could be expensive.
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