F30 335i Paddle Shifter issues

M3AWD · 03-22-2019, 10:26 AM

Over the past few weeks I noticed that pulling the downshift (-) paddle shifter on my 2014 335i is sometimes causing an upshift (+). At first I thought I was going crazy but it happened another couple times, and then this morning it was very obvious: I was on 5th and wanted to down shift a couple of gears before hitting the red light, but it went up to 7th, then I pressed another time just to confirm and it went to 8th.

I searched and found cases where the paddles completely fail but did not find any hits where the car upshifts upon pulling the downshift paddle.

Bought the car new and had it for 5+ years with only 33k miles. M-Sport with sport auto transmission.

exE36M3 · 03-22-2019, 10:56 AM

That's pretty bizarre. FWIW, I've taken apart the stock steering wheel and the parts are pretty easy to replace. The paddle themselves look like pretty dumb on/off type switches. The have a single, signal wire - so even if they go bad, they theorectically shouldn't anything - and definitely not opposite shift.

You still under warranty?

M3AWD · 03-22-2019, 01:09 PM

Quote:

Originally Posted by percychow

That's pretty bizarre. FWIW, I've taken apart the stock steering wheel and the parts are pretty easy to replace. The paddle themselves look like pretty dumb on/off type switches. The have a single, signal wire - so even if they go bad, they theorectically shouldn't anything - and definitely not opposite shift.

You still under warranty?

No warranty.

I read in some other thread that the downshift paddle is wired through the upshift paddle or something like that? I did not have time to read in details (at work).

Billfitz · 03-22-2019, 01:27 PM

The cable for the paddles starts at one paddle, goes over to the other, and then goes to the connector on the steering column. I guess that it's not impossible for something to have become messed up in the cabling.

Eschmacher · 03-23-2019, 02:23 PM

When I had paddle issues, it ended up being the entire SZL, which includes the clockspring. Though my issue only happened when turning the wheel.

stickyfingaz · 01-25-2020, 05:22 AM

Hi M-Sport
I have the same problem shifting up rather than down.
Did you ever get to the bottom of it?

Batdan · 01-25-2020, 11:37 AM

This happened to my bro’s 320d. The garage changed the squib under warranty and that resolved it.

stickyfingaz · 01-27-2020, 03:10 AM

Thanks Batdan, I will look into that

03-22-2019, 10:26 AM	#1
M3AWD Lieutenant Colonel 3182 Rep 1,902 Posts Drives: 2022 G80 M3 AWD Join Date: Sep 2013 Location: Atlanta, GA iTrader: (0)	F30 335i Paddle Shifter issues - upshifts when downshifting! Over the past few weeks I noticed that pulling the downshift (-) paddle shifter on my 2014 335i is sometimes causing an upshift (+). At first I thought I was going crazy but it happened another couple times, and then this morning it was very obvious: I was on 5th and wanted to down shift a couple of gears before hitting the red light, but it went up to 7th, then I pressed another time just to confirm and it went to 8th. I searched and found cases where the paddles completely fail but did not find any hits where the car upshifts upon pulling the downshift paddle. Bought the car new and had it for 5+ years with only 33k miles. M-Sport with sport auto transmission. __________________ 2022 G80 M3 Comp M xDrive Last edited by M3AWD; 03-22-2019 at 10:27 AM.. Reason: typo
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03-22-2019, 10:56 AM	#2
exE36M3 BMW CCA Member 488 Rep 808 Posts Drives: 2015 435i M Sport Join Date: Jan 2018 Location: NorCal iTrader: (4)	That's pretty bizarre. FWIW, I've taken apart the stock steering wheel and the parts are pretty easy to replace. The paddle themselves look like pretty dumb on/off type switches. The have a single, signal wire - so even if they go bad, they theorectically shouldn't anything - and definitely not opposite shift. You still under warranty?
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03-22-2019, 01:27 PM	#4
Billfitz Lieutenant General 8243 Rep 16,079 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	The cable for the paddles starts at one paddle, goes over to the other, and then goes to the connector on the steering column. I guess that it's not impossible for something to have become messed up in the cabling.
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03-23-2019, 02:23 PM	#5
Eschmacher Car Hypochondriac 335 Rep 901 Posts Drives: 2014 335i M-Sport Estoril Blue Join Date: Feb 2017 Location: Sterling, VA iTrader: (0) Garage List 2014 BMW 335i [0.00]	When I had paddle issues, it ended up being the entire SZL, which includes the clockspring. Though my issue only happened when turning the wheel. __________________ Power mods: VRSF IC/Catted DP - FTP CP/BP - AFE Cat-back - BM3/XHP - Dorch S2 Handling mods: Koni yellow - Eibach prokit - Millway street - M Performance LSD - M3 brakes - EBC bluestuff Exterior: Euro LCI tail lights - Shitty ECS CF spoiler - Chinese M performance diffuser Interior: Bavsound stage 1 and subs - custom trunk sub by Mike1327
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01-25-2020, 05:22 AM	#6
stickyfingaz Registered 2 Rep 3 Posts Drives: BMW F30 328i 2014 Join Date: Jan 2020 Location: Port Macquarie, NSW, Australia iTrader: (0)	Hi M-Sport I have the same problem shifting up rather than down. Did you ever get to the bottom of it?
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01-25-2020, 11:37 AM	#7
Batdan New Member 2 Rep 7 Posts Drives: BMW 335D XDRIVE MSPORT Join Date: Jan 2020 Location: Sheffield, UK iTrader: (0)	This happened to my bro’s 320d. The garage changed the squib under warranty and that resolved it.
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01-27-2020, 03:10 AM	#8
stickyfingaz Registered 2 Rep 3 Posts Drives: BMW F30 328i 2014 Join Date: Jan 2020 Location: Port Macquarie, NSW, Australia iTrader: (0)	Thanks Batdan, I will look into that
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