multitronic gearbox oil re fill - how to?

**willsan** · 07-05-2011,08:32 PM

hello there

my multitronic box has decided to start playing up , to cut a long story short i have taken the plunge and removed the ecu from the gearbox to send away for testing/ repair .

The thing I need to know now is how to fill the box with oil after I have refitted the ecu .

There are two plugs on the bottom of the box , one is a plain hex and the other is a kind of anti tamper torx type , not sure which is the drain and which is the fill and also how do you know you have the correct level of oil ?

Thanks

Willsan

**Crasher** · 07-05-2011,11:43 PM

Without diagnostic equipment such as VCDS to allow you to monitor the fluid temperature and the ability to pump the fluid in from below, you will not be able to do this.

**willsan** · 08-05-2011,02:01 PM

so if I use a temp sensor of some sort to monitor the temp and make a pump then i can fill it ?
how hot does it need to be ? and which hole do I fill it through?

**Crasher** · 08-05-2011,04:49 PM

The temperature is measured deep inside the gearbox

Unscrew ATF drain plug -A- with multi-point bit -3357- and drain off ATF.
Re-tighten ATF drain plug. Tightening torque: 24 Nm
Unscrew ATF inspection plug -B-.
Screw connecting piece on stopcock of ATF charging device for CVT gearboxes -VAS 5162- into threaded hole for ATF inspection plug -B-.
Turn stopcock in direction of filling hose -lower arrow-. ATF flows into gearbox.
Fill gearbox with at least 4.5 … 5 ltr. of fresh ATF.
Move selector lever to position “P”, start engine and allow to run at idling speed

Vehicles from model year 2005 onwards: Selector lever in position “P”. Press accelerator pedal to briefly rev engine up to at least 2,500 rpm.

Re-install plug B
Run the engine in P and monitor the temperature
When the ATF has reached a temperature of 35°C, unscrew ATF inspection plug -B-.
When the plug is opened, approx. 5 cl of ATF will always run out of the inner oil level tube
If ATF continues to come out through ATF inspection opening via overflow pipe before ATF has reached a temperature of 40 °C, the ATF level is OK.

ATF inspection plug must be screwed in again at the latest when ATF reaches temperature of 45 °C (countries with hot climates: 50 °C).
If ATF temperature exceeds 45 °C too much fluid will escape as it expands when heated. In this case the quantity of fluid in the gearbox is NOT sufficient!

If no ATF fluid has drained out of the inspection plug when temperature reaches 40 °C, top up ATF