[gazzcav]

hi all i have a 09 325d msport cab ,when I'm sitting at lights for more than around 8 secs with foot on brake,when i release brake its like some one has rammed me up the rear,but if I'm in sport mode it doesn't happen ,other than that the gearbox is fine,any ideas

[gazzcav]

auto

[makkan00]

First line of protocol.
Reset adaptation settings for gearbox (not soft reset which is mentioned on the forums)
If that does not resolve it, then update the software of your gearbox.
I had a guy who had similar issue but when breaking.
Updated his gearbox software and problem resolved.

[gazzcav]

any idea how i do that,thanks

[gazzcav]

just googled it and got it ,try it tomorrow ,some say 30 secs and some say 5

[m20b25]

Originally Posted by gazzcav

just googled it and got it ,try it tomorrow ,some say 30 secs and some say 5

It's not the 'hold accelerator down' method. You need to reset adaptions using diagnostic software. If you have the software installed, setup and the right cable it's easy.

[old grey steve]

Originally Posted by makkan00

First line of protocol.
Reset adaptation settings for gearbox (not soft reset which is mentioned on the forums)
If that does not resolve it, then update the software of your gearbox.
I had a guy who had similar issue but when breaking.
Updated his gearbox software and problem resolved.

As above but I'd also be looking at a the sump/sleeve for leaks as this is where the gear box is scavenging for oil that's been lost.

If you look at the various posts on here there are a good few now re gear box's which tells you something and when we see or hear of these issues when inspected they are usually found to be sweating fluid.

Re setting adaptations on a gear box that's losing fluid may help short term but you need to address the route cause and the easiest way of planning this is to look for a loss of fluid, if nothing is spotted follow makkan00's advise as its bang on.

[gazzcav]

thanks,how/were do i get the software and cable,forgive me I'm not very hi tech

[m20b25]

I got mine off eBay and works well. Comes with software too- I'll look for the link. You'll need medium computer skills to set up and use it. Spend a bit of time reading up. Or, find a friendly member to reset it for you, only takes a few seconds. Software update should be done while the car is hooked up to a power supply (not just a battery charger).

[gazzcav]

ok thanks would be great if you could send me the link,how do i link the car up to a power supply without battery charger thx

[m20b25]

It was sold by user cable-shack. Can't remeber which one but it's blue.

The 70amp power supplies are quite a few hundred quid mate. It's ok to update smaller modules without one. I couldnt update mine as I have the lastest version compatible for my iLevel. To upgrade it, I'd need to update all software onboard so would need to borrow a power supply so I haven't done it. Or get someone else to do it!

[gazzcav]

done all that ,still the same ,crazy if i put it in s mode its fine

[old grey steve]

Originally Posted by gazzcav

done all that ,still the same ,crazy if i put it in s mode its fine

No unheard of. But as I stated previously check underneath for fluid signs.

And re the sort of software you can buy on line (and I honestly don't know)how effective is it is it able to do the task in hand(re this I've not got a clue)but what I will say is that we see people who have updated this that and the other using their lap top only to find they haven't actually done it once we do it issue gone! But as said haven't really a clue re what's out there apart from the odd code reader.

But I'd say drop sump dump fluid change the sump and of course fluid re set all adaptations and start from scratch, historically this for us works(unless there is a mechatronics issue-which is rare on these I have to say)but if you re set adaptations on a box that leaking fluid you'll struggle. On DS mode we've also noticed improvements as such in behaviour only to find in standard D mode you've got issue and when inspected you find a leak!

[gazzcav]

haven't had chance to look underneath it yet but i didn't drive it for 3 days and when io jumped in today and put in reverse it seemed to slip for a few seconds so I'm guessing it could be low on fluid ,do i have to get it on a ramp to check fluid ,also what make of fluid do i need ,i never got a handbook with car when i bought it,if it is leaking what is involved in sorting it ,thanks for replies

[old grey steve]

Originally Posted by gazzcav

haven't had chance to look underneath it yet but i didn't drive it for 3 days and when io jumped in today and put in reverse it seemed to slip for a few seconds so I'm guessing it could be low on fluid ,do i have to get it on a ramp to check fluid ,also what make of fluid do i need ,i never got a handbook with car when i bought it,if it is leaking what is involved in sorting it ,thanks for replies

From cold if its doing that the first port of call I'd be making is underneath looking for lak signs. You'll need to have the car in the air for this.

If you look at the 2 sumps below that we changed a little while ago




you'll notice on the plastic fins it looks a little shiny(lost fluid)if you look at the first sump picture where the sump isn't square(where you can see some bolt holes)you'll see the amount of sweating around that area(which is common)you'll also notice ahead of this the pilot plug right next to the jug with the old dirty fluid in it.

If you look at the underside of another sump I took a photo of notice the oil sweating in the same place if you follow me



And thisis what a nice clean sump looks like



And sadly a manual for the car with a problem like this is about as mush use to you as a canoe with a 6ft hole in it in the middle of a desert

[gazzcav]

thanks for that ,what make of fluid would you recommend and am i best getting sump from dealer

[old grey steve]

Originally Posted by gazzcav

thanks for that ,what make of fluid would you recommend and am i best getting sump from dealer

You can buy a sump kit(genuine ZF kit)and it's got everything you need now direct from Euro's, go on line and type your registration number in to get your cars details up. I thin part number wise from Euro it might be 50411059K(speak to Sam)AWBimmer I got him the part number for his car last time from memory that part nuimber may cross refrence. I know part number ending in 58K is for a 335i and other petrols.

If you buy on line it's far cheaper than buying over the counter but the kit isn't that easy to locate on the site. But you'll save an easy £150 over BMW supplying the kit, check Shaun's(gaza01's) thred on DIY gearbox as its a good imformative read

[gazzcav]

thanks steve