E90 lci stange shifting (Auto)

[AndreX]

Hey guys

i hope you guys can help me with a little issue/worry that i am experiencing

my 2011 E90 Lci sometimes when it shifts from 3rd to 4th and 2nd to 3rd the change is not smooth its very jerky and harsh so at first i thought maybe the gear was damaged by the previous owner :thumbdo: but this issue only happens at slow speeds and very little throttle :dunnoanymore: , if you go flat out the shifts are perfect. i recall seeing a post about resetting the auto-box but i cant seem to find it. :fencelook:

Has anyone else ever experienced this? i want to do software on my car soon but i am scared because of this issue that if i add more torque through the gearbox that it might pack up on me and as I've heard they don't come cheap. :hammerhead:

can anyone please shed some light on this?

Hope to see you all tomorrow at the glen!!!! :ty:

 

[vjx]

Any code? ZF or GM gearbox? ATF Oil change?
Had problem with cold engine or hot engine?

 

[brads7]

I have the same on my car not sure what it is , doesn't show any errors.

 

[AndreX]

Any code? ZF or GM gearbox? ATF Oil change?
Had problem with cold engine or hot engine?

not too sure about the ZF or GM will check it out. if its cold it happens for the for about 4km then it gets better and from there on its on the 3rd and 4th change when traveling at slow moving traffic speeds and slow pull aways

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I have the same on my car not sure what it is , doesn't show any errors.

Same here no error codes at all

 

[vjx]

I have GM autobox. Changed gearbox oil at JSN at 60000km. Now, it's over 130000km. From the ECU, the life of oil is around 70%. So I'm going to change probably at 160000km.
Usually the jerk is caused by blocked or dirty valve body due to bad cooling design and high ATF oil temp. I saw a lot on early to mid 2000 Volvo Aisin box.
If you have ZF box, then it's good to contact ZF from the forum for professional advice. If GM, then it's easy to change the Dexron oil, filter and oil pan gasket.
6sp autobox on E90 is pretty strong. Hope you will solve the problem.

 

[cOlDFuSiOn]

You can try an adaptation reset, but not sure. Odd that it happens when it is cold from what I understand from your post. Usually in stop and go traffic when the box gets damm hot you likely to have slippage.

Try a reset? Switch on ignition so that the cluster is on etc but the motor is off. Floor the accel pedal making the kick down switch is pressed, keep there for about 30 seconds. Switch off the ignition, leave the pedal and switch the car on and drive off.. See what that does? :thumbs:

 

[AndreX]

I have GM autobox. Changed gearbox oil at JSN at 60000km. Now, it's over 130000km. From the ECU, the life of oil is around 70%. So I'm going to change probably at 160000km.
Usually the jerk is caused by blocked or dirty valve body due to bad cooling design and high ATF oil temp. I saw a lot on early to mid 2000 Volvo Aisin box.
If you have ZF box, then it's good to contact ZF from the forum for professional advice. If GM, then it's easy to change the Dexron oil, filter and oil pan gasket.
6sp autobox on E90 is pretty strong. Hope you will solve the problem.

Thanx man. That does make sense. Do you have any idea how much a service/ fix for this would cost? How much is a oil change and where?

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You can try an adaptation reset, but not sure. Odd that it happens when it is cold from what I understand from your post. Usually in stop and go traffic when the box gets damm hot you likely to have slippage.

Try a reset? Switch on ignition so that the cluster is on etc but the motor is off. Floor the accel pedal making the kick down switch is pressed, keep there for about 30 seconds. Switch off the ignition, leave the pedal and switch the car on and drive off.. See what that does? :thumbs:

i did try doing a reset but im not sure if i did it right. as far as i understand there is no light /sound/indication that the adaption reset worked or am i wrong?

it happens right through driving the car but it is more noticeable when the car is cold but when driving long distance at a constant speed then stopping and pulling away after then the change is so hard it almost feels as if the car was hit from the back.

thanx for the input guys :ty::ty:

 

[Sleepa]

Get box checked at Zf. Sounds like it could be the issue.

Adapt reset is actually worse if the box is on its way out.

 

[FerdiBotha]

Take your car to ZF Services. They will have a look at adaptation values etc. and then do a gearbox service on your car.

I did mine about a month ago and although my gearbox shifted pretty much perfectly (car has 80k on the clock) the service still made it smoother in DS.

ZF's service is great and you should be in and out within about 2 hours. IIRC the service is around the R5k mark.

You can speak to Nico or Hardus - (011) 4570005

 

[brads7]

Been meaning to take my car through to ZF for a while ,the problem is that they are only open during the week.

Anyone else had this issue and managed to fix it or identify the problem?

 

[Sleepa]

Yip this is exactly what happened on my 6HP box.

Took it in to Nico and he diagnosed that the box was gone beyond repair.

Try get it in for an evaluation asap if the oil does not smell burnt they can swap out +-5k and you save a complete overhaul! +-32k

 

[AndreX]

Yip this is exactly what happened on my 6HP box.

Took it in to Nico and he diagnosed that the box was gone beyond repair.

Try get it in for an evaluation asap if the oil does not smell burnt they can swap out +-5k and you save a complete overhaul! +-32k

:blueCry: thats alot of money :blueCry: as far as i understand my warrenty through MFC covers 25k on the Box so hopefully i dont have to pay in :thumbdo:

Thanx for all the input guys :ty: does any one know the price of a evaluation? is it free ?

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Take your car to ZF Services. They will have a look at adaptation values etc. and then do a gearbox service on your car.

I did mine about a month ago and although my gearbox shifted pretty much perfectly (car has 80k on the clock) the service still made it smoother in DS.

ZF's service is great and you should be in and out within about 2 hours. IIRC the service is around the R5k mark.

You can speak to Nico or Hardus - (011) 4570005

Do you by some chance know the cost of just a evaluation? Thanx for the help bud raise:

 

[FerdiBotha]

I have no idea how much and evaluation costs. Just give them a call and they'll be able to tell you.

If the budget allows you should consider doing the service. Having a gearbox failure will mean you'll have to fork out R25k+.

Good luck man:thumbs:

 

[AndreX]

I have no idea how much and evaluation costs. Just give them a call and they'll be able to tell you.

If the budget allows you should consider doing the service. Having a gearbox failure will mean you'll have to fork out R25k+.

Good luck man:thumbs:

Thanks for the help budraise:

Gave them a call and booked the car in for evaluation at 12:30 ... will keep everyone posted what the damage to my budget and the gearbox is.. :hammerhead:

watch this space :fencelook:

 

[brads7]

All the best

Please keep us updated

 

[Ricky318i]

2011 E90 LCI my gearbox was changed at 75 000km due to a similar problem. The new gearbox is now at 133 000km and is still doing the same thing in 2nd - 3rd also 4 - 5th especially when cold, also when going downhill. After it is warmed up, it is less pronounced to not noticeable.

My colleague's car does the same and also a friend of mine's father in law's car.

Keep us posted.

 

[Sleepa]

Good luck!

 

[AndreX]

2011 E90 LCI my gearbox was changed at 75 000km due to a similar problem. The new gearbox is now at 133 000km and is still doing the same thing in 2nd - 3rd also 4 - 5th especially when cold, also when going downhill. After it is warmed up, it is less pronounced to not noticeable.

My colleague's car does the same and also a friend of mine's father in law's car.

Keep us posted.

ok so i have a answer to hopefully solve your problem aswell

see image below

apparently the strange shifting is caused by a faulty wheel speed sensor causing the gearbox to be confused and there by the sh#tty shifts so i priced the part at BMW and its R1200 for the sensor and R1100 labour and to make it worse i dont know if its just one sensor or more. :rage::dunnoanymore:

Hardus at ZF said it can also be caused by running different tyre makes/ sizes as the displacement can also confuse the sensors.:hammerhead:

i will replace the part soon and keep everyone posted if it solved the problem or not

But atleast its not as costly fix as i thought :thumbs:

Besides for that i will recommend a evaluation at ZF to anyone these guys really are spot on with their service

 

[Ricky318i]

This is interesting.
I have all 4 the same tires, but the problem could have been exacerbated when I put this set of tires on. :thinking:
Did/could they tell you which wheel sensor it is?

Please keep us informed on the progress.

 

[AndreX]

This is interesting.
I have all 4 the same tires, but the problem could have been exacerbated when I put this set of tires on. :thinking:
Did/could they tell you which wheel sensor it is?

Please keep us informed on the progress.

unfortunately not hey i am going to have to have BMW figure that part out as the diagnostic just picks up a faulty sensor but not what wheel :thumbdo::blueCry: