Valve Body: Service and Repair

Valve Body

Do not run the engine or tow the vehicle when the transmission fluid 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.

• Insert 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 transmission fluid level after installing the transmission fluid pan. Refer to => [ Transmission Fluid Level, Checking and Adding ] Transmission Fluid Level, Checking and Adding.

Special tools, testers and auxiliary items required

• Torque Wrench (5-50 Nm) (V.A.G 1331)

• Digital Torque Wrench (V.A.G 1756)

- Remove the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.

- Disconnect the connector form the solenoid valves, see - items 1 through 8 - in the "Wiring Routing and Connectors" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

To unlock the connector housing on the solenoid valves, use a flat head screwdriver with a 2.5 mm diameter shaft.

The wiring harness or the valve body with the solenoid valves must be replaced if the one of the connectors gets damaged.

- Disconnect the connectors, see - items A and B - in the "Wiring Routing and Connectors" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Remove the bracket for the connectors, see - items 1 and 2 - in the "Bracket for Connectors, Securing the Wires" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Disconnect the transmission fluid temperature sensor, see - item 3 - in the "Bracket for Connectors, Securing the Wires" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body and carefully remove it from the valve body.

- Remove the selector lever - 1 - from the selector shaft.






- Hold the selector lever - 1 - steady with pliers - 2 - to prevent transferring the torque to the multifunction transmission range switch.

- 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).






When loosening the other bolts, the function of the valve body can be influenced or the valve body splits up.

- 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 of 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.






- Insert the valve body carefully and secure it using 2 bolts.

Bolt lengths and locations on the valve body:










- Make sure the wires are not pinched.

- Install the remaining bolts and the brackets - 1 and 2 - and tighten hand tight.






- Install the transmission fluid temperature sensor and tighten it. Refer to => [ Fastener Tightening Specifications ] Specifications.

- Connect the connectors (quantity 8) to the solenoid valves, see - items 1 through 8 - in the "Wiring Routing and Connectors" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Connect the brackets for the connectors, see - items 1 and 2 - in the "Bracket for Connectors, Securing the Wires" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body. Tightening specification, refer to => [ Fastener Tightening Specifications ] Specifications.

- Connect the connectors, see - items A and B - in the "Wiring Routing and Connectors" section of the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Tighten the valve body bolts working from the inside toward the outside in a diagonal sequence. Tightening specification => [ Fastener Tightening Specifications ] Specifications.

- Install the shift lever.

- Tighten the nut on the shift lever - 1 -. For the correct tightening specification refer to => [ Fastener Tightening Specifications ] Specifications.






- Hold the selector lever - 1 - steady with pliers - 2 - to prevent transferring the torque to the multifunction transmission range switch.

- Install the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.

- Fill the transmission fluid and check the level. Refer to => [ Transmission Fluid Level, Checking and Adding ] Transmission Fluid Level, Checking and Adding.

- Connect the vehicle diagnostic tester and move through the selections until "Functions-/component selections" 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".