Cold starts and the ZF box/clutch

scoss · 11-23-2021, 05:37 PM

Just seeing if this is a thing. Recently had a ZF & transfer case oil change. However, I’ve noticed on cold mornings the car takes a few min to warm up and shift normally. During these 2 min the shifts with 1/2/3 can be quite jerky. Once warmed up the car shifts fine.

Watsey · 11-24-2021, 03:07 AM

Yes, quite common. If you get issues with shifting when the transmission is at operating temperature this could indicate a problem - these transmissions are complex and I'd always get a pro diagnostics test done rather than going DIY.

11-23-2021, 05:37 PM	#1
scoss First Lieutenant 46 Rep 304 Posts Drives: BMW - F31 - 335D Join Date: May 2020 Location: Portishead iTrader: (0)	Cold starts and the ZF box/clutch Just seeing if this is a thing. Recently had a ZF & transfer case oil change. However, I’ve noticed on cold mornings the car takes a few min to warm up and shift normally. During these 2 min the shifts with 1/2/3 can be quite jerky. Once warmed up the car shifts fine.
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11-24-2021, 03:07 AM	#2
Watsey Major General 6404 Rep 8,493 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	Yes, quite common. If you get issues with shifting when the transmission is at operating temperature this could indicate a problem - these transmissions are complex and I'd always get a pro diagnostics test done rather than going DIY. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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