Gearbox faulty? 335d

confused.com · 07-29-2012, 01:00 PM

Hi Guys,

Noticed something strange with my car recently. When i put it into reverse to back out of my drive way, it just kinda sits there and doesn't move as you would expect an auto to do - prodding the gas sees the revs rise like its in neutral and only after a few prods will it begin to back up slowly then return to normal. It happens rarely but becoming more frequent now.

This normally happens after the car has sat on the driveway for the night, its on a completely flat surface. Its a 2008 e92/43k on the clock. The weather doesnt seem to impact this, happens in the Winter and Summer - i thought it might be the brakes sticking, is this possible? Or is the gearbox shot?

Cheers

NJ 1161 · 07-29-2012, 02:20 PM

Can't answer your question but mine does this as well. Always presumed it was just brakes binding as in frequent.

Hopefully someone will confirm nothing to worry about?

chris_s1 · 07-29-2012, 03:49 PM

I noticed the brakes binding on mine a few times, but it wasn't like the car was in neutral, you could feel it driving against the stuck brakes. Then they would break free and it would shoot forward. So unless you feel this, I wouldn't think its the brakes?

wheelie good · 07-29-2012, 03:49 PM

I had this on my last Beamer got rid afterwards as the gearbox smashed into pieces while doing a ton down the motorway

Only kidding ain't got a clue what it is tbh!

briers · 07-29-2012, 04:00 PM

Mine does this too. I also assumed it was the brakes binding.

It does this in D when i set off after the car has been sitting for days. As you say, bit of throttle and it goes. Alternatively, i put it into R, it moves straight away, put it into D and it goes as normal.

Mustard3 · 07-30-2012, 02:52 AM

I've noticed this too when reversing off the drive occasionally. I don't think it's because the brakes are binding.

It's probably not that uncommon, just a quirk of a cold gearbox. I hope.

Havana · 07-30-2012, 05:38 AM

Sounds like brakes if its been sat overnight. Do you use the handbrake or just leave it in P? Might be worth Trying that for a week or so then alternate back to handbrake to see if it still happens.

HighlandPete · 07-30-2012, 06:07 AM

Are you guys feeling it is any different from torque converter "drain back", does happen on some gearboxes, but typically gets drive in a second or so, when the revs rise a little.

Are you parking on slopes, that could make it more of a possibility.

But the OP's delay of several seconds or so in reverse doesn't sound right at all.

BTW, binding brakes would typically 'bang off' if they are the cause. You'd know about it for sure.

HighlandPete

confused.com · 07-30-2012, 07:12 AM

Thanks for the replies guys. I do use the handbrake and must admit i've never felt a bang or felt anything to suggest the brakes were binding. I'll keep an eye on it for it now and see if it gets worse - i have the bmw extended warrenty, is the gearbox covered in this? I'm assuming 43k miles is not reasonable wear and tear.

07-29-2012, 01:00 PM	#1
confused.com Private First Class 12 Rep 123 Posts Drives: 335d Join Date: Jun 2011 Location: oxford iTrader: (1)	Gearbox faulty? 335d Hi Guys, Noticed something strange with my car recently. When i put it into reverse to back out of my drive way, it just kinda sits there and doesn't move as you would expect an auto to do - prodding the gas sees the revs rise like its in neutral and only after a few prods will it begin to back up slowly then return to normal. It happens rarely but becoming more frequent now. This normally happens after the car has sat on the driveway for the night, its on a completely flat surface. Its a 2008 e92/43k on the clock. The weather doesnt seem to impact this, happens in the Winter and Summer - i thought it might be the brakes sticking, is this possible? Or is the gearbox shot? Cheers
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07-29-2012, 02:20 PM	#2
NJ 1161 Major 76 Rep 1,104 Posts Drives: 335D M3 Join Date: Nov 2011 Location: UK iTrader: (0)	Can't answer your question but mine does this as well. Always presumed it was just brakes binding as in frequent. Hopefully someone will confirm nothing to worry about? __________________
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07-29-2012, 03:49 PM	#3
chris_s1 Major 36 Rep 1,113 Posts Drives: M235i 6MT Join Date: Jun 2009 Location: Ontario, Canada iTrader: (0) Garage List 2012 E92 335d [8.66]	I noticed the brakes binding on mine a few times, but it wasn't like the car was in neutral, you could feel it driving against the stuck brakes. Then they would break free and it would shoot forward. So unless you feel this, I wouldn't think its the brakes?
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07-29-2012, 03:49 PM	#4
wheelie good Second Lieutenant 9 Rep 277 Posts Drives: BMW Join Date: Jun 2012 Location: UK iTrader: (0)	I had this on my last Beamer got rid afterwards as the gearbox smashed into pieces while doing a ton down the motorway Only kidding ain't got a clue what it is tbh!
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07-29-2012, 04:00 PM	#5
briers Ben 62 Rep 1,992 Posts Drives: Tesla p85d Join Date: May 2010 Location: Midlands,UK iTrader: (0)	Mine does this too. I also assumed it was the brakes binding. It does this in D when i set off after the car has been sitting for days. As you say, bit of throttle and it goes. Alternatively, i put it into R, it moves straight away, put it into D and it goes as normal.
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07-30-2012, 02:52 AM	#6
Mustard3 Lieutenant 99 Rep 403 Posts Drives: F31 340i Join Date: Sep 2011 Location: UK iTrader: (1)	I've noticed this too when reversing off the drive occasionally. I don't think it's because the brakes are binding. It's probably not that uncommon, just a quirk of a cold gearbox. I hope.
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07-30-2012, 05:38 AM	#7
Havana Private First Class 4 Rep 143 Posts Drives: E91 N52 - Individual Join Date: Jul 2012 Location: Poolside iTrader: (3)	Sounds like brakes if its been sat overnight. Do you use the handbrake or just leave it in P? Might be worth Trying that for a week or so then alternate back to handbrake to see if it still happens.
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07-30-2012, 06:07 AM	#8
HighlandPete Lieutenant General 6663 Rep 15,858 Posts Drives: BMW F11 535i Touring Join Date: Mar 2007 Location: Scotland, Highland Region iTrader: (0)	Are you guys feeling it is any different from torque converter "drain back", does happen on some gearboxes, but typically gets drive in a second or so, when the revs rise a little. Are you parking on slopes, that could make it more of a possibility. But the OP's delay of several seconds or so in reverse doesn't sound right at all. BTW, binding brakes would typically 'bang off' if they are the cause. You'd know about it for sure. HighlandPete
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07-30-2012, 07:12 AM	#9
confused.com Private First Class 12 Rep 123 Posts Drives: 335d Join Date: Jun 2011 Location: oxford iTrader: (1)	Thanks for the replies guys. I do use the handbrake and must admit i've never felt a bang or felt anything to suggest the brakes were binding. I'll keep an eye on it for it now and see if it gets worse - i have the bmw extended warrenty, is the gearbox covered in this? I'm assuming 43k miles is not reasonable wear and tear.
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