it should be possible to replace with the GB in situ, you may need to move a couple of things but there is plenty of room from beneath

 

Thank you for your help. Dave.

 

you are welcome, i hope you get sorted soon

 

 

there is no filler level, you need to drain the box and get an approx measurement of what you have drained, you won't be able to drain the full amount as a good bit is left in the torque convertor, refill with fresh fluid matching your measurement, do this at least 3 times to water down the used amount that is left, running the engine and putting into all gears for a few seconds each refill, this will mix old with new, to refill remove the sensor from the top of the gearbox and fill there,when refilling final time an operating temp of 40 to 45 degrees is required, with the engine running remove the small center drain plug, if fluid comes out leave until it stops running, if nothing comes out add a liter to the gearbox [ engine off ! ] and try again, once done reset the gearbox control and reset GB learning.
hope that helps and you get good results......B

 

Ah. I was assuming from reading your posts that the centre plug that you mention and the fluid running out if it was the filler level.
Just to clarify, the centre plug is it on the gearbox casing?

 

I’ve got a pdf of the BMW procedure for this can send you it later when I get in, on train at the moment

I’ve got a pdf of the BMW procedure for this can send you it later when I get in, on train at the moment

Depending on where you are, you might end up doing it yet🤣😍 Seriously though I'm immensely grateful for your assistance.

Dave

 

Depending on where you are, you might end up doing it yet🤣😍 Seriously though I'm immensely grateful for your assistance.
On another note and after extensive research I have found a company that can offer to test diagnose strip, test and offer repairs on the mechatronic unit. This is re assuring if I cannot rectify by means of oil change.
Dave

the solenoids seem to be the issue and these can be bought from a couple of places in the UK and many more in Europe

 

Thanks.

 

Thanks. Oil changed today so I'll see how things perform from now on. Your assistance is greatly appreciated and good luck with the box.

hope it works for you, please let us know

 

a lot aren't aware, but these boxes have been around for about 10 years now, mostly on Volvo's and Toyota's etc, so tried and tested

 

😉

 

Apart from the dreaded 8 speed 😉

it's been around 8 years in various makes with few issues, the main issue IMO is total lack of servicing, it should have a run in service of 1000 miles then every 25 to 30,000 after, Aisin quote 30,000 service intervals, but nobody follows that recommendation

 

BMW have covered themselves in so much as most trouble will usualy start out of warranty or gets passed onto aftermarket warranties or some poor sod with no warranty, as for oil changes, these days they bank on synthetic oil protecting the engine but in reality engines have become so much more complex with much finer tolerances that the oil takes a beating and won't last for extended mileages, i remember when Mobil 1 came on the market, it was the first fully synthetic oil available to the public and it wasn't cheap at about 25 pounds for a gallon, the dealers were still using mineral, i used it for a first 500 mile oil change on my brand new Ford XR3 and would use it for 20000 mile service intervals after with the old oil looking as good as new, but that was the old 1.6 CVH engine which is not even on the same planet as the BMW B47 engines, anyway i got almost 300,000 out of the CVH without any issues or wear and you can still do these mileages on modern engines, but you need to do 8 to 10,000 mile services or once a year. my X2 get new oil and filter every 4500, which is all i do a year now and even with low mileage i still got a gearbox issues, sorted with a fluid change ! it's not rocket science but BMW and others dont care, its acceptable losses

 

I remember having to strip almost brand new diesel engines at the dealership I worked at many years ago because the oil quality was too good for initial bedding in and caused glazing issues.
Oh! how things have changed.

 

yes i remember that too, i worked at an Isuzu dealer for a while and all their engines came from the factory with mineral oil which had to be changed to synthetic after run in,personally i think the engines and gearboxes we have now are exceptional, but the dealers and public need to catch up and realise they still need to be maintained

 

And we've not mentioned the barmy 1ltr wet timing belt Ford design. What an earth is that all about?

 

yes you couldn't make it up it's all about reducing friction so the emissions can be lowered [ on paper ] so pointless and pretty dumb IMO, it will only get worse

 

got the same issue on a 220d luxury auto . Code 4204F1 at 38k miles 2018 plate . Car pretty much not drivable . Ill join the claim if one.

 

😥

 

Not good or reassuring is it?

its a bloody nightmare

sounds like a solenoid issue which is not uncommon, but you realy need to see a specialist to narrow things down, parts are available so not all doom and gloom

 

Hope you are right but the first code was ,,,,Gear ratio monitoring gear 7 : Clutch C2 or C3 open incorrectly . That was yday wile 50 miles from home . Ive manage to drive safe home only issue
was a rough shift around 20 to 30mph ( big jolt ) , In the morning ive taken the car and head to a garage to investigate the problem and the issue went ballistic , After 3 miles i had no reverse ( position on odometer and on shift in R ) car rev but not move and then limp mode the remaining 2 miles to the garage in max 20mph at 2.5k rpm ( wont change any more up gears just rev ).
Had the guy reset the gearbox and clear some codes and have the reverse back but still a joyride . I plan in the morning to see the fluid lvl and quality .
Ill update from there .

 

here a link to a youtube video which explains this gearbox, very interesting and if nothing else gives you an idea of why Transmission Fluid changes are so important, still shocks me BMW and others won't do it as a service requirement

 

Interesting video, it really is a marvel of engineering, so why on earth do they not service them, it’s madness…

 

Look what i found out guys VW Transmission Lawsuit Won't Be Dismissed
.... this its the same gearbox !!!
We need to get together !!!!

 

Look what i found out guys VW Transmission Lawsuit Won't Be Dismissed
.... this its the same gearbox !!!
We need to get together !!!!

here is a list cars this transmission is in, serious problems are not common hence why most get the cold shoulder from BMW, sad but thats the way most manufacturers work, i maintain most issues are related to servicing or lack of, this needs to be addressed and added to service schedules, IMO of course
BMW/MINI:

• 2015–present BMW 2 Series Active Tourer (F45) and Gran Tourer (F46) with 4-cylinder engines
• 2016–present BMW X1 (F48) with 4-cylinder engines
• 2016–present Mini Clubman (F54) with 4-cylinder engines
• 2016–present Mini Countryman (F60) with 4-cylinder engines (and B38 with AWD)
• 2018–present Mini Cooper SD (F55/F56) and JCW (F56) due to torque output over 300Nm
• 2018–present BMW X2 (F39) with 4-cylinder engines
• 2019–present BMW 1 Series (F40) with 4-cylinder engines
• 2020–present BMW 2 Series Gran Coupé with 4-cylinder engines

Changan:

• 2019–present Oshan COS1° GT
• 2019–present Changan CS85
• 2020–present Changan UNI-K
• 2021–present Changan UNI-V
• 2022–present Changan CS75

Chery:

• 2023–present Chery Tiggo 9 (AWD)

Citroën:

• 2017–present Citroën C5 Aircross
• 2018–present Citroën Grand C4 SpaceTourer
• 2019–present Citroën Berlingo
• 2020–present Citroën C4
• 2021–present Citroën C5 X

DS Automobiles:

• 2018–present DS 7
• 2019–present DS 3
• 2020–present DS 9
• 2021–present DS 4

Exeed:

• 2023–present Exeed Lanyue

Geely:

• 2019–present Geely Xingyue/Xingyue L[7]
• 2020–present Geely Xingrui

GM:

• 2016 Chevrolet Malibu
• 2017 Buick LaCrosse[8]
• 2017–2019 Cadillac XT5[5]
• 2018–2020 Buick Regal TourX, (I4 AWD only)

Jaguar:

• 2020–present Jaguar E-Pace (1.5t 3-cylinder engines)

Land Rover:

• 2020–present Discovery Sport (1.5t 3-cylinder engines)
• 2020–present Evoque (1.5t 3-cylinder engines)

Lexus:

• 2012–present Lexus RX (V6 AL10 F-Sport, AL20 & AL30 non Hybrids)
• 2018–present Lexus ES (non-hybrid engines)
• 2020–present Lexus LM (LM350)
• 2022– Lexus NX (non-hybrid engines)

Lynk & Co:

• 2017–present 01
• 2018–present 03
• 2020–present 05[9]
• 2021–present 02
• 2021–present 09

Mitsubishi:

• 2017–present Mitsubishi Eclipse Cross (diesel engines)
• 2019–present Mitsubishi Delica (diesel engines)

Opel/Vauxhall:

• 2017–present Opel Insignia
• 2017–present Opel Grandland X
• 2018–present Opel Combo
• 2020–present Opel Corsa
• 2020–present Opel Mokka
• 2021–present Opel Astra L

Peugeot:

• 2017–present Peugeot 5008
• 2017–present Peugeot 308
• 2019–present Peugeot 3008 1.6 EAT8 & 2.0 EAT8
• 2018–present Peugeot 508 EAT8
• 2019–present Peugeot Rifter EAT8
• 2019–present Peugeot 208
• 2019–present Peugeot 2008
• 2022–present Peugeot 408

Polestar:

• 2019–present Polestar 1

Škoda:

• 2018–present Škoda Karoq (Australian market)
• 2020–present Škoda Octavia (some markets)

Toyota (as UA8xx):

• 2018–present Toyota Avalon (non-hybrid engines)
• 2018–present Toyota Alphard (V6)
• 2018–present Toyota Camry (non-hybrid engines)
• 2018–2020 Toyota Sienna
• 2019–present Toyota RAV4 (non-hybrid)
• 2020–present Toyota Highlander/Grand Highlander

Volkswagen/MAN:

• 2017-present Volkswagen Crafter and MAN TGE (transversely mounted engine only)
• 2018–present Volkswagen Tiguan (US version only)[10]
• 2018–present Volkswagen Atlas (US version only)
• 2018–present Volkswagen Golf (US MK7 & Australian MK8)
• 2019–present Volkswagen Jetta (US version only)
• 2019–present Volkswagen Arteon (US version only)
• 2022–Volkswagen Taos (FWD models)[11]

Volvo (TG-81SC/SD):

• 2014–2016 Volvo S80 II[12]
• 2014–2016 Volvo V70 II[13]
• 2014–2016 Volvo XC70 II
• 2014–2017 Volvo XC60
• 2015–2018 Volvo S60 II
• 2015–2018 Volvo V60
• 2014–present Volvo XC90 II[14]
• 2016–present Volvo S90 II[14]
• 2016–present Volvo V90 II[14]
• 2016–present Volvo V40
• 2017–present Volvo XC60 II
• 2017–present Volvo XC40[15]
• 2018–present Volvo V60 II[3]
• 2018–present Volvo S60 III

 

I am amazed there’s no filter in an auto box given the clutch packs can cause debris let alone any bits of metal. It’s no wonder solenoids/mechatronic units have issues.

 

which happens in the first run in miles hence the service

 

Update to post . Did the flush and fluid change was low and dirty but NOT HELPING . Car its drivable atm all gears working but i can feel something isnt right . Rough changes at low speed
im sure will go any moment back to limp mode .
So any who have this issues CHANGING FUIDS ITS NOT HELPING only leave you 400 short . Im still looking for a place to repair and sell the car ( with warranty that issues are gone ) or to change the
gearbox with remanufactured one found for 2500 inc labour .
Only problem i have to get the car to Essex ( 500 miles ) .

 

Update: had my gear box swapped out today, managed to find a used one with 50k miles on and a replacement torque converter and car drives like new, £3300 all in for the components, labour and oil, but...... now got an error code with the 'oxygen sensor after catalytic converter, signal: short circuit to B+' - maybe been dislodged/moved from the swap out? Part looks relatively inexpensive.

@brucefraser12011962 - any idea where that probe is located, is it on the exhaust manifold?

 

shocked that a fluid change would cost you 400, fluid change works for some, clearly not all, sounds like you have 1 or more solenoid issues, were you told why your fluid was low, do you have a leak ?

 

bmw oil its expensive 230 for 6 litters . Yes been told fluid was low but no leak ...could be internal problems .

 

oil is around 70 for 20L, the oil would need to go somewhere regardless of internal issues and if the fluid has been low for a while that could be your cause, if you have no leaks then its been like that since you got the car, fill level is very specific and critical to proper operation

 

Check this out

Pardon our interruption...

 

i get what you are saying,but bmw atf is aisin atf which is identical to the same spec mannol, there is literally no difference

 

there is difference when you dont diy . You cant tell the Bmw garage to use 2 ponds mannol oil

 

very true

 

i have changed my answer, having a bad day sorry