Three Most Common DSG Gearbox Problems

Three Most Common DSG Gearbox Problems

DSG or the direct-shift gearbox comes as a fully automatic gearbox or semi-manual gearbox. It is responsible for controlling the speed and the torque in a vehicle as is demanded of the car as per the terrain. Eliminating the need of the user to control the gear system manually, the DSG system is used in brands like Audi and Volkswagen. However, 6-speed DSG gearboxes experience their fair share of problems. These are some of the most common transmission problems:

  1. Quivering On Engine Start

People often assume this to be a problem with DSG transmission. However, it is actually related to the transmission area and not the transmission specifically. If you happen to encounter trembling on idle, the dual mass flywheel may be the reason. You can find this part between the transmission and the engine in which two plates work together to provide cushioning.

When the flywheel is worn out (which will happen over time), the cushioning becomes limited or deteriorates completely, and you experience the tremble. So, before you approach for the transmission, make sure to have the flywheel checked by an experienced technician. It is most noticeable on gearshifts and replacing the part is the only solution in this case.

  1. Mechatronic Failure

The state where the gear shifting becomes limited is known as a mechatronic failure; in most cases, the gear remains in a single gear or skips odd/ even numbered gears. In most cases the problem will cause either a gearbox malfunction light to appear on the dashboard or the PRNDS lights will light up on the cluster. You need to get it checked using a proper grade diagnostic machine. We recommend having a professional with experience in DSG gearboxes do this in order to avoid a misdiagnoses.

There are various codes that may be picked up. Each one meaning something different. Fault codes can range from ‘clutch limits reached’ to ‘adaptations’ or ‘mechanical gear disengagement’ to name a few. For this reason, it is best to let a qualified, experience professional assess the vehicle.

In most instances the mechatronic unit can be repaired but in some instances the unit needs to be replaced entirely. That being said, it is best to make sure wherever you take your car, you are offered a proper guarantee. At VAGSpec Centre Cape Town, we offer a 12 month/ 20 000km guarantee. A proper guarantee is a sure sign you are dealing with a reputable service provider.

3. Noisy Bearings

Sometimes, the mechanical components of the DSG transmission fail, and most often times a bearing wearing out is the cause. In this case, you can notice an annoying sound while driving or even a grinding noise. The issue should be attended to as soon as possible to avoid bigger problems. Often we see a failed bearing that has been ground down inside the gearbox. This process causing metal shavings from the bearing to enter the gearboxes oil and these filings are then whisked away to other parts of your transmission, and in some cases the mechatronic unit, causing further damage.

The damaged bearings need to be replaced by a professional with DSG transmission experience. This will mean the job is done correctly and should anything go wrong with the bearings after the repair, you will have peace of mind knowing you have a guarantee to fall back on.

2 Responses

  1. Hi please advise what the cost would be to fix the mechatronic ?

    I know that the DSG gearbox has two bearings, and if needs to be replaced. – Please advise what the cost would be.

    1. Hi Ruth,
      We will gladly quote on the repair. Please be on the lookout for an email from me.
      081 373 3329