Procedures

ATF level, checking

Special tools and equipment



- Vehicle diagnostic, testing and information system VAS 5051
- Drip tray V.A.G 1306
- Filler system V.A.G 1924
- Protective goggles

Requirements
- Transmission not in emergency running mode.
- Vehicle must be level (horizontal)
- Selector lever at position "P", engine idling.
- Air conditioner and heating system must be switched off.
- Vehicle diagnostic, testing and information system VAS 5051 connected, "Vehicle self-diagnosis and vehicle system "02 - transmission electronics" selected.
- The ATF temperature at the beginning of the test must not be higher than 30°C. If necessary, first allow the transmission to cool.

Note:
- The ATF temperature is read from the vehicle diagnostic, testing and information system VAS 5051.
- The ATF level will vary according to the temperature of the ATF.
- If the ATF level is checked when the ATF temperature is too low, this will result in overfilling.
- If the level is checked when the ATF temperature is too high, this will result in underfilling.
- Both overfilling and underfilling have a detrimental effect on the functioning of the transmission.
- Only the ATF available as a replacement part may be used in the automatic transmission 09G. Other oils cause faults and/or breakdown of the transmission.
- The ATF temperature is read from the vehicle diagnostic, testing and information system VAS 5051.

Reading ATF temperature



Display on VAS 5051:
- Under -1- select diagnostic function "08 - Read measured value block".



Display on VAS 5051
1 - Enter display group (max. input value = 255)

- Enter "6" for "display group number 6" in zone -2- and confirm entry by pressing Q key.



Display on VAS 5051
- Read ATF temperature in display zone -1-.

Checking and correcting ATF level

Note:
- The ATF level is checked at the ATF inspection plug.
- The ATF level is correct if at an ATF temperature between 35° and 45°C (50°C for tropical countries)there is still a slight leakage of fluid at the ATF inspection plug (caused by the rise in fluid level due to heating).

- Fill ATF filler system V.A.G 1924 with ATF for automatic transmission 09G.

ATF filler system must be clean and ATF must not be mixed with other ATFs!




- Mount reservoir of ATF filler system V.A.G 1924 as high as possible on vehicle.
- Drive vehicle onto a four column lifting platform or over an assembly pit in order for it to be absolutely
horizontal.
- Place drip tray V.A.G 1306 underneath transmission.

WARNING! When working close to the radiator, always maintain a certain distance from the fan - danger of injury!

Fan may switch on automatically.

- Start engine and run at idling speed.

WARNING! Wear protective goggles.




- When an ATF temperature of 35°C is reached, unscrew ATF inspection plug -A-.



- Always replace seal (arrow) for ATF inspection plug.



- ATF present in overflow pipe runs out first (arrow -2-).

If ATF emerges via overflow pipe from ATF inspection aperture before ATF has reached 40°C, ATF level is OK.

- Tighten ATF inspection plug (arrow -1-) with new seal to 27 Nm. ATF check is now complete.

Note:
- The ATF inspection plug must be screwed in again before the ATF reaches a temperature of 45°C (50°C for tropical countries)

If no ATF emerges from ATF inspection aperture by the time ATF has reached 45°C, top off

- Exit function "08 - Read measured value block" by pressing ? key.
- Press "06 - End output".
- Switch off ignition and disconnect Data Link Connector (DLC).

Filling ATF



If no ATF emerges via overflow pipe (arrow -2-) at ATF inspection aperture by the time ATF has reached 40°C, ATF must be topped off.

Note:
- The ATF inspection plug must at the latest be resealed on reaching a temperature of 45°C (50°C for tropical countries). Switch engine off if necessary, allow transmission to cool down and repeat the test.




- Remove sound insulation tray (arrows).



- Remove filler plug (Torx socket head T55) (arrow).

Note:



The filler plug seal (arrow) must always be replaced.




- Hang hook of filler system V.A.G 1924 in aperture of filler plug (arrow).

Note:
- An insufficient ATF filling as well as filling to excess affects the function of the transmission.




- Using V.A.G 1924 fill with ATF until at between 35°C and 45 5C ATF emerges via overflow pipe
(arrow -2-) from inspection aperture.
- Tighten ATF inspection plug (arrow -1-) with new seal to 27 Nm. ATF check is now complete.

Note:
- The inspection plug must at the latest be resealed on reaching a temperature of 45°C (50°C for tropical countries). If
necessary, allow transmission to cool down and repeat the test.




- Tighten filler plug (arrow) with new seal to 39.5 Nm.
- Exit function "08 - Read measured value block" by pressing ? key.
- Press "06 - End output".



- Install sound insulation tray (arrows).
- Switch off ignition and disconnect Data Link Connector (DLC).