Shuddering when reversing and or in 1st up a hill

[Brad_e92]

Hi everyone,

My car seems to shudder when reversing up a hill/incline. This seems to happen even after the car has warmed and can also happen in 1st gear.

Does anyone know how to remedy this? Is it possibly an adaptation and I need to reset them using ista?

Or is this something more sinister or normal with DCT? The car drives fine other then that. 1st shudde is only noticed when going super slow like when parking. No shudder or issues when driving normally.

Thanks.

[DrFerry]

Originally Posted by Brad_e92

Hi everyone,

My car seems to shudder when reversing up a hill/incline. This seems to happen even after the car has warmed and can also happen in 1st gear.

Does anyone know how to remedy this? Is it possibly an adaptation and I need to reset them using ista?

Or is this something more sinister or normal with DCT? The car drives fine other then that. 1st shudde is only noticed when going super slow like when parking. No shudder or issues when driving normally.

Thanks.

Possible engine or transmission mount failure.

[Brad_e92]

Originally Posted by DrFerry

Possible engine or transmission mount failure.

Hi thanks for the response. I had engine mounts done recently so I guess I'll look towards transmission mounts. Thanks.

[DrFerry]

Originally Posted by Brad_e92

Hi thanks for the response. I had engine mounts done recently so I guess I'll look towards transmission mounts. Thanks.

Check the Diff mounts also just to be sure.

[spammysammich]

How is the fluid level?

[Brad_e92]

Originally Posted by DrFerry

Check the Diff mounts also just to be sure.

Hi how do I check these? Best to let an indi check them all?

[Brad_e92]

Originally Posted by spammysammich

How is the fluid level?

Hi engine oil is fine. DCT box has no obvious signs of leaks. Same for diff. Can I use ista to verify any of these?

[spammysammich]

Originally Posted by Brad_e92

Hi engine oil is fine. DCT box has no obvious signs of leaks. Same for diff. Can I use ista to verify any of these?

Engine oil doesn't matter with transmission. You may not see a transmission oil leak because of the cover. But if you don't see any oil on your parking spot about where your shifter would be situated it probably isn't leaking that much. It will weep eventually. BMWs like their oil in the outside

[Brad_e92]

Originally Posted by spammysammich

Engine oil doesn't matter with transmission.

Yeah I know but you asked how fluids were. I thought you meant the whole car. I guess I could check the transmission operating temp….. would be hot if it's low on fluid right?

[spammysammich]

Originally Posted by Brad_e92

Yeah I know but you asked how fluids were. I thought you meant the whole car. I guess I could check the transmission operating temp….. would be hot if it's low on fluid right?

You can't check the transmission fluid level without getting under the car. Temp won't tell you much.

[spammysammich]

Let's put it this way, if the transmission has never been serviced, it needs to be. Including flushing the fluid.

[Brad_e92]

Originally Posted by spammysammich

Let's put it this way, if the transmission has never been serviced, it needs to be. Including flushing the fluid.

Will that likely fix my issue or is it already 💩itself? I hope not the latter…..

[spammysammich]

You won't really know unless you verify that the fluid level is low. The process of checking the fluid level should allow you to inspect the fluid for particulates. There is a process you need to go through to top off the transmission fluid to the proper level which includes running the car to get the transmission fluid to a certain temperature then pouring in more until it spills out of the fill plug. Then sealing the fill plug. google it.

[DrFerry]

Originally Posted by Brad_e92

Hi how do I check these? Best to let an indi check them all?

Based on your questions, I would say yes. Car has to be put on a lift to check all these mounts thoroughly and check or top off the DCT fluid.

[amrazM]

my dct had this issue too when it was hot or reverse on an incline. Use to shudder pretty bad. bothered me so much that i converted the car to manual

[Brad_e92]

Hi everyone. BMW did a visual inspection of the car and 0 leaks anywhere or signs of leaking. I'm going to try to reset the adaptations. It's just had the latest updates installed. I'll report back if it remedies it at all 👍🏼 next step will be a DCT service if not.

[nycplumber]

Normal DCT operation. Be smoother with throttle input when backing up while car isn't fully warmed up. Also a transmission tune will likely smooth it out.

[Brad_e92]

Originally Posted by nycplumber

Normal DCT operation. Be smoother with throttle input when backing up while car isn't fully warmed up. Also a transmission tune will likely smooth it out.

Hi, just had it back from updates and have also reset adaptations. Had a long test on the incline near me when reversing. Applying a gentle amount of throttle causes a judder/shake through the car until more is applied. If a healthy amount of throttle is applied right away from a stop there is no judder(this Ofc isn't ideal as there's plenty of reversing situations where it's mot possible to apply so much throttle). Car was fully warmed during testing. Applying throttle gradually results in initial shudder/shake and then it going away. Any ideas what this could be? I'd say I do not notice any issues reversing on level ground

[nycplumber]

How many miles on the car? Original engine, trans, diff mounts?

[Brad_e92]

Originally Posted by nycplumber

How many miles on the car? Original engine, trans, diff mounts?

Hi car is on 59k. Original engine but had engine mounts done along with rod bearings about 1k miles ago. Other mounts unknown on age.

[amrazM]

Originally Posted by Brad_e92

Hi car is on 59k. Original engine but had engine mounts done along with rod bearings about 1k miles ago. Other mounts unknown on age.

Try driving the car in 1st gear around 2000rpm, let me know if you feel the car pulsing back and forth. If it’s not smooth then your flywheel is likely worn.

[Scrippy]

What S mode are you in? If the car is cold the trans will be jumpy. Keep in mind it's an automatic manual, meaning theres a clutch or two not a torque converter. They grab and release just like a manual would, so if your pedal input is wrong so will the application of clutch. If dealing with a hill maybe use S2. In S2 the car throttle is so laggy that you can be heavy on the pedal without hard clutch grabs. In S5 or S6 the clutch grab is quick and jerky if you are light footed. In S2 the car will feather or ride the clutch for a smoother grab. And if that's not good enough use S1 and pretend it snowed on that incline lol.