BMW DCT Transmission problems

In this brief guide, we are going to provide you with the common BMW DCT transmission problems and what you can do to rectify these problems before they worsen.

BMW DCT transmissions, which are dual-clutch transmissions used in multi-speed vehicle transmission systems, have two separate clutches for odd and even gear sets.

BMW Transmissions are a type of automated manual transmissions and have a global reputation for quality, reliability and durability but there are some common problems with BMW DCT transmission.

What are the common problems with BMW DCT transmission?

Most of the common problems with BMW DCT transmission are:

  • Jerking and Shuddering
  • Unusual and loud noises 
  • Difficulty shifting gears
  • Transmission overheating
  • Fluid leakage

Why is Jerking and Shuddering a problem with BMW DCT transmission?

Because jerking and shuddering would mean the BMW DCT transmission is not functioning smoothly as DCT transmissions are designed to be and as DCTs are supposed to be a smoother drive than manual. Therefore if you’re experiencing shuddering when you accelerate then it means you have a problem.

What are the signs of this problem with the BMW DCT transmission?

Shuddering itself can be taken as a sign of this BMW DCT transmission problem because DCT transmissions are not meant to shudder when loaded or accelerated. 

How to solve this BMW DCT transmission problem?

Visiting your trusted mechanic or service center at the earliest is possibly the only way to fix this issue as the components might be worn out and it requires experience and expertise to repair this problem.

Why is Unusual and loud noises a problem with BMW DCT transmission?

These BMW DCT transmissions are not manufactured to make such loud and unusual noises and if you are hearing such unpleasant noises while driving then you should check with your mechanic as this might get a serious issue.

What are the signs of this problem with the BMW DCT transmission?

You will hear these noises while driving and will be very unpleasant to your ears which can be taken as a sign that the transmission is having some problem.

How to solve this BMW DCT transmission problem?

Normally this sound means that a component within the assembly needs to be replaced as it might be fractured. The entire assembly from which the sound is coming must be removed and rebuilt to fix this problem.

Why is Difficulty shifting gears a problem with BMW DCT transmission?

You would want a seamless and easy shift even at low throttle input, so if yourBMW DCT transmission is shifting harshly or with difficulty even at low speed then there is definitely a problem.

What are the signs of this problem with the BMW DCT transmission?

You would immediately notice and sense if the BMW DCT transmission is shifting with difficulty from one gear to another as this is one of most important issues with DCT transmissions.

How to solve this BMW DCT transmission problem?

Try resetting your car software or if you are unable to do so then try visiting the nearest service center or your trusted mechanic would be the only way to solve this problem because this might be a serious transmission problem you are facing. 

Why is Transmission overheating a problem with BMW DCT transmission?

Overheating would mean the BMW DCT transmission is operating at a temperature above its normal working temperature and will cause damage to internal parts. This is why overheating is a problem of the BMW DCT transmission.

What are the signs of this problem with the BMW DCT transmission?

A few common signs are slow response while accelerating and not getting the desired drive when needed. Also, you could see some sort of malfunction sign on the dashboard when your BMW transmission has overheated. 

How to solve this BMW DCT transmission problem?

First let the transmission cool and then check the transmission oil and its level. If it is too low then fill the required amount of oil in the transmission. If it is too dirty, then drain the entire oil from the transmission and fill it again.

Why is Fluid leakage a problem with BMW DCT transmission?

BMW DCT transmissions are very advanced systems and if anything is leaking out of them then it could cause major mechanical damage or overheating of the DCT transmission. Therefore this is definitely a sign of a problem which may cause serious trouble for you in the future. 

What are the signs of this problem with the BMW DCT transmission?

You would get an error such as P0842 or errors in the similar range which are associated with transmission fluid pressure. If these sensors get a low pressure this will indicate there is not enough fluid and a leakage somewhere in the transmission.

How to solve this BMW DCT transmission problem?

Finding where the leak is and closing it, is the most obvious solution to fix this sign before it causes mechanical damage to your car. Usually the gaskets or the seals in the DCT transmission are worn out or broken to cause a fluid leak.

How to precisely diagnose these common problems with BMW DCT transmission?

To properly diagnose these problems, you need a scan tool to read these codes from the Transmission Control Unit. Firstly, If a BMW DCT transmission is malfunctioning, it immediately informs the driver with an error message on the screen. 

How to prevent getting these problems in the first place?

Regularly changing your gearbox oil and other lubricants may save you a lot of trouble and money in the future. Although many experts suggest different number miles for servicing, your car manual will give you a proper recommendation when you should change it. 

FAQs: BMW DCT transmission problems

Are DCT transmissions bad?

No, a dual-clutch transmission is more like a manual transmission than automatic and therefore is generally very good and reliable. Although, if you don’t treat it properly, you could permanently damage it.

Many drivers treat their car’s dual-clutch transmission in the same way that they would drive a car that had an automatic transmission.

Is BMW DCT reliable?

The unit itself is very reliable, except for leaks from the sump gasket. The 2 clutches are multi disk packs. You can buy separate DCT clutch packs but usually no one just changes one (unless the car was supercharged).

Conclusion

In this brief guide, we have provided you with the common BMW DCT transmission problems and what you can do to rectify these problems before they worsen.

If you have any questions or comments please let us know.

Citations:

https://f80.bimmerpost.com/forums/showthread.php?t=1484165

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