Crabbing/lurching when braking to a stop

bman5150 · 01-12-2017, 08:39 PM

Seems my trans wants to lurch forward when I come to a full stop. It's especially noticeable if I stop quickly to a full stop. Almost seems as if the torque converter isn't unlocking until the last second. It's not causing huge issues, but it seems different than before...never remember feeling this subtle lurching when I come to a full stop. No CELs and no other driveability issues. Any ideas?

STR8-6IX · 01-12-2017, 09:53 PM

what's your mileage? since you have a ZF box, i would definitely recommend a fluid service if you are nearing 60k (miles) the lurching you are feeling is likely the 3-2 and 2-1 downshift when slowing down. mine smoothed out ALOT after changing the fluid.

be sure to change oil pan (filter) as well. good luck

VTECaddict · 01-12-2017, 11:54 PM

There is a "soft stop" feature where the car will let up the brakes a little right before the car stops to....soften the stop.

bman5150 · 01-13-2017, 05:51 AM

Car has about 70K miles and has been in service for about 6 years now. It does feel like that downshift you mentioned 6IX

01-12-2017, 08:39 PM	#1
bman5150 Second Lieutenant 40 Rep 290 Posts Drives: 2011 BMW 335i M-Sport (sold) Join Date: Apr 2007 Location: C-Bus, OH iTrader: (0)	Crabbing/lurching when braking to a stop Seems my trans wants to lurch forward when I come to a full stop. It's especially noticeable if I stop quickly to a full stop. Almost seems as if the torque converter isn't unlocking until the last second. It's not causing huge issues, but it seems different than before...never remember feeling this subtle lurching when I come to a full stop. No CELs and no other driveability issues. Any ideas? __________________ 2011 BMW 335i XDrive Msport (auto)
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01-12-2017, 09:53 PM	#2
STR8-6IX Banned 536 Rep 2,825 Posts Drives: RWD 528i N52 Join Date: Nov 2016 Location: Toronto iTrader: (0)	what's your mileage? since you have a ZF box, i would definitely recommend a fluid service if you are nearing 60k (miles) the lurching you are feeling is likely the 3-2 and 2-1 downshift when slowing down. mine smoothed out ALOT after changing the fluid. be sure to change oil pan (filter) as well. good luck
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01-12-2017, 11:54 PM	#3
VTECaddict Where'd my VTEC go? 481 Rep 6,067 Posts Drives: 06 330i 6MT Join Date: Mar 2009 Location: Seattle, WA iTrader: (4)	There is a "soft stop" feature where the car will let up the brakes a little right before the car stops to....soften the stop. __________________ AW/Terra \| ZSP \| ZPP \| ZCW \| iDrive \| CA Mods: BC BR coilovers \| Blacklines \| M-tech rear \| dual exhaust \| M3 steering wheel \| BMW SSK \| ZHP shift knob \| High-kick CF spoiler \| NBT Retrofit M3 front control arms \| M3 rear guide rods \| Manzo rear toe and camber links \| Monroe rear shock mounts \| Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
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01-13-2017, 05:51 AM	#4
bman5150 Second Lieutenant 40 Rep 290 Posts Drives: 2011 BMW 335i M-Sport (sold) Join Date: Apr 2007 Location: C-Bus, OH iTrader: (0)	Car has about 70K miles and has been in service for about 6 years now. It does feel like that downshift you mentioned 6IX
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