Transmission kicks when switching to reverse.

[Bmwfvr]

Originally Posted by robnitro

Did it start happening after the fluid change? If so, you might be low a bit. The level check is a pain.

Also there is a mechatronic seal that sometimes starts to leak and it will cause issues with reverse because it leaks pressure, which might explain why it's not happening when cold-fluid is thicker then.

No it was happening before the fluid change. In fact the transmission didnt feel right in all gears before the fluid change. Shifting got very smooth afterwards except for the reverse gear. BMW tech noted it in the report and his Recommendation was to replace the transmission with an estimated cost of ~$5000!!

So the mechatronic is something i can replace without taking the pan off?

Sent from my SM-G955U using Xoutpost.com mobile app

[Hack213]

Originally Posted by Bmwfvr

No it was happening before the fluid change. In fact the transmission didnt feel right in all gears before the fluid change. Shifting got very smooth afterwards except for the reverse gear. BMW tech noted it in the report and his Recommendation was to replace the transmission with an estimated cost of ~$5000!!

So the mechatronic is something i can replace without taking the pan off?

Sent from my SM-G955U using Xoutpost.com mobile app

Mechatronics are inside transmission pan. YouTube it

[Bmwfvr]

Originally Posted by Hack213

Mechatronics are inside transmission pan. YouTube it

Ok i just youtubed it. Is this supposed to be replaced as part of the transmission service?

Sent from my SM-G955U using Xoutpost.com mobile app

[Hack213]

Originally Posted by Bmwfvr

Ok i just youtubed it. Is this supposed to be replaced as part of the transmission service?

Sent from my SM-G955U using Xoutpost.com mobile app

Only when they fail.. you would get a code and no it's not part of the drain and refill service