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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Issues with auto/manual transmission......This is weird



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      10-02-2013, 10:14 AM   #1
cstmx_ryder
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Issues with auto/manual transmission......This is weird

Just this morning when I was driving to work, I put the car (automatic) in manual mode as I always do, but this time, the light on the gear box didn't switch to the +/- when I put the car in manual and the light didn't even come on.

But what's more weird is that when I was using the manual mode, during a stop light, or low cruising speeds, the transmission AUTOMATICALLY switched over to 'D' mode. It did this every time!!

Has anyone encountered this on their 335 auto?

TIA
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      10-02-2013, 10:17 AM   #2
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The wiring for Steptronic “modes” can fray over time, could just be that yours is messed up. Checking into that seems to fix 90% of the steptronic problems that crop up.
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      10-02-2013, 10:26 AM   #3
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Quote:
Originally Posted by 135Pats View Post
The wiring for Steptronic “modes” can fray over time, could just be that yours is messed up. Checking into that seems to fix 90% of the steptronic problems that crop up.
Ok thanks, that's what I was hoping for, something easy to fix. I did have to get into the gear box to install the V1 or the boost gauge, can't remember which.
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      10-02-2013, 01:37 PM   #4
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http://www.e90post.com/forums/showthread.php?t=842645

this.
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      10-02-2013, 01:48 PM   #5
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Quote:
Originally Posted by _shim View Post
Thanks!!
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