Valve Body
Do not run the engine or tow the vehicle when the pan is removed or when there is no transmission fluid in the transmission.
- The valve body and the wiring harnesses can also be removed with the transmission installed.
- Install seals using transmission fluid. Other types of lubricants can lead to faults in the transmission hydraulics.
- Always replace a dirty or faulty valve body.
- Only use lint free cloths
- Check the fluid level after installing the pan. Refer to TRANSMISSION FLUID LEVEL, CHECKING AND FILLING .
Special tools and workshop equipment required
- Torque Wrench (5-50 Nm) -V.A.G 1331-
- Digital Torque Wrench -V.A.G 1756-
Removing
-- Remove the transmission fluid filter. Refer to TRANSMISSION FLUID FILTER .
-- Disconnect the connector from the solenoid valves. See items 1 through 8.
To unlock the connector housing on the solenoid valves, use a flat head screwdriver with a 2.5 mm diameter shaft.
If a connector or the connector housing are damaged, then the wiring harness or solenoid valve must be replaced.
-- Disconnect the connectors. See items 9 and 10.
-- Remove the bracket for the connectors. See items 1 and 2.
-- Disconnect the transmission fluid temperature sensor -G93- and carefully remove it from the valve body. See item: 3.
-- Bend the securing plate -arrows- on the selector lever back.
-- Remove the selector lever -1- from the selector shaft.
-- Hold the selector lever -1- steady with pliers -2- to prevent transferring the torque onto the multifunction transmission range switch -F125-.
-- Make sure the valve -A- on the valve body is not damaged.
The valve is very >>sensitive<<. Even minor damage can lead to a malfunction.
-- Always slide the valve into the body, secure it against falling out and never exchange it.
-- Loosen the bolts -arrows- (quantity 12).
If other bolts are loosened, the valve body will distort.
-- Remove the brackets -1 and 2-.
-- Disconnect the valve body and remove it.
-- When removing the valve body, pay attention to the piston -2-.
-- Remove the piston with the spring.
Installing
To make sure that the wires do not get pinched during installation:
-- Route and secure the wires -1, 3, 4 and 5- as illustrated.
The distance -a- must be maintained so that the wiring harness -5- does not touch the planetary gear and get damaged when the vehicle is being driven.
The valve body is secured with bolts with three different lengths.
-- Sort the bolts according to length before installing the valve body.
-- Coat the piston -2- with transmission fluid and install the spring.
-- Install the valve body carefully and secure it using 2 bolts.
| Bolts -arrows- | Quantity 6, M6 x 21 | |
| Bolts -arrows A- | Quantity 2, M6 x 16 | |
| Bolts -arrows B- | Quantity 4, M6 x 28 | |
-- Make sure the wires are not pinched.
-- Install the remaining bolts and the brackets -1 and 2- and tighten by hand.
-- Install the transmission fluid temperature sensor and tighten to specification. Refer to FASTENER TIGHTENING SPECIFICATIONS .
-- Connect the connectors (quantity 8) to the solenoid valves. Refer to WIRE ROUTING, CONNECTORS AND BRACKET ON VALVE BODY .
-- Connect the bracket for the connectors WIRE ROUTING, CONNECTORS AND BRACKET ON VALVE BODY , tightening specifications, refer to FASTENER TIGHTENING SPECIFICATIONS .
-- Connect the connectors. See items: 9 and 10.
-- Tighten the valve body bolts working from the inside toward the outside diagonally. Tightening specification, refer to FASTENER TIGHTENING SPECIFICATIONS .
-- Install the selector lever.
-- Tighten the nut on the selector lever -1-. For the correct tightening specification refer to FASTENER TIGHTENING SPECIFICATIONS .
-- Hold the selector lever -1- steady with pliers -2- to prevent transferring the torque onto the multifunction transmission range switch.
-- Bend the securing plate -arrows- on the nut up.
-- Install the transmission fluid filter. Refer to TRANSMISSION FLUID FILTER .
-- Fill the transmission fluid and check the level. Refer to TRANSMISSION FLUID LEVEL, CHECKING AND FILLING .
-- Connect the vehicle diagnostic tester and move through the selections until "Functions-/component selection" is displayed.
-- Press "Drive (Repair Groups 01; 10 through.26; 28 through.39)".
-- After that "6-speed automatic transmission 09G".
-- Press "01 - OBD".
-- Press "Functions".
-- Press "basic setting".