Everything You Need To Know About

MULTITRONIC
AUTOMATIC GEARBOXES 6-7 SPEED

MULTITRONIC AUTOMATIC GEARBOXES 6-7 SPEED

Everything You Need To Know About

6-7 SPEED MULTITRONIC
AUTOMATIC GEARBOXES

Automatic gearbox for vag group.
Automatic gearbox for vag group.

WHAT IS MULTITRONIC?

Normal automatic gearboxes work in largely the same way, except the job of depressing the clutch and swapping the ratios around is taken care of by the car. A continuously variable transmission also works automatically to alter the speed of the wheels in relation to the engine, but instead of using a box full of gears, it has a pair of pulleys – which is why it is referred to as a transmission, rather than a gearbox.

CVT (continuously variable transmission) gearbox allows the wheels to rotate at various speeds, without altering the engine speed. To simplify that, imagine two gears connected by a chain, as you would on have a bicycle. The gear connected to the pedals is half the size of the one at the rear wheel. For every full rotation of the pedals, the wheel would rotate half a turn.

You would travel slowly, but the pedals would be easy to move. Swap that around so that the pedal gear is now double the size of the wheel gear. For every full turn of the
pedals, the rear wheel would turn twice. It would be really hard to set off, but once moving you could achieve high speed. That’s exactly how it works in a car.

A conventional manual gearbox not like multitronic automatic gearboxes will have five or six gear ratios, with the lower set useful for low speed – pulling away from junctions or climbing hills – and the higher ones for cruising on the motorway at low engine rpm.

MULTITRONIC AUTOMATIC GEARBOXES
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THE MOST COMMON ISSUES WITH

MULTITRONIC AUTOMATIC GEARBOXES

Issue 1: Broken TCM connections

Between sensors and motherboard hidden inside TCM we can find loads of connections. Unfortunately with extreme heat and vibrations they will break at some point. Causing flashing PRNDS lights on the dashboard.

Issue 2: Transmission Control Module (TCM)

The continuously variable transmission is electronically controlled as there are no gears and as such, the module that controls it can cause a myriad of problems. One of the best indicators that the electronic TCM has gone south is that the PRND indicators will start flashing. This isn’t the easiest part in the world to replace, but it can be done with a little bit of work and mechanical knowledge.

Issue 3: Broken output shaft

Common fault to cars with engine 2.0 or bigger. Output shaft cannot by bought separately therefore whole gearbox need to be replaced. Good indication of that fault is juddering when taking off either forward or reverse.

6-7 SPEED MULTITRONIC AUTOMATIC GEARBOXES

Slow Response or Hesitation Moving From a Dead Stop is "Normal"

The CVT does not offer the same initial torque delivery of a traditional automatic. These transmissions make the car feel a bit under powered when taking off. You may feel a hesitation or a slow throttle response from the stop lights, but that is likely because you aren’t feeling that characteristic shifting from first to second, and on up. Once you get up to speed, you will notice a much smoother ride.

Multitronic Automatic Gearboxes repair and replacement starts from £1250

Other typical issues with
6-7 SPEED MULTITRONIC AUTOMATIC GEARBOXES

Burned clutch friction plates.
Damage to drive pulley done by chain.
Broken drive chain.

HOW TO FIND OUT WHAT IS GOING ON WITH YOUR MULTITRONIC

Jerky car at take off, clutch slip or waving RPM
All of those signs are related to gearbox pressure. Lose of pressure might start a chain reaction of faults and problems. For example if there is not enough pressure build in because pump is not performing properly or output shaft is cracked/broken, CVT gearbox will not be able to work properly. You might experience juddering, slip of the chain or even lose of drive. At that stage friction plates will get damaged and oil contaminated with metal swarf.

MULTITRONIC AUTOMATIC GEARBOXES

NEED HELP?

You can talk to us about multitronic automatic gearboxes  by phone, email or our contact form.
Our award-winning certified VAG (Volkswagen Audi Group) engineers will help you Monday to Friday between 7 am and 4 pm. You can also follow us on Facebook or Instagram to stay up-to-date.  Click here for the latest news.