Removal and Replacement
Removing and installing electrohydraulic control unit
Information
Notes
Information
Fill only with ATF approved by Porsche.
Information
Hot vehicles should cool down before beginning the activity.
Information
Vehicle must be horizontal in order to be filled and checked.
Preliminary work
1. Move selector lever to position P.
2. Raise the vehicle at the prescribed jacking points.
3. Remove the underbody panels.
4. Place oil collection pan under the transmission.
Draining ATF
Caution
Oil fill level too low
^ Risk of damage to components
- Do not start engine.
- Do not tow the vehicle.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
1. Unscrew drain plug -1- and drain ATF.
ATF - ATF drain plug
2. Replace sealing ring for drain plug and tighten screw. - Tightening torque: 22 Nm (16 ftlb.).
Removing electrohydraulic control unit
Dismantling
1. Remove cross member.
Cross member
2. Disengage the coolant lines at the fastening points.
Bracket for the coolant lines
3. Remove electric plug.
Electric plug
4. Disengage cable and vacuum line from the retaining clips of the ATF pan.
5. Disengage the coolant hoses in the area of the left drive shaft.
Coolant lines
6. Pull vacuum line off the switch-over valve.
7. Undo the left drive shaft on the transmission side.
8. Remove the holder for the coolant hoses.
Holder for coolant lines
9. Unlock electrical plug connection by turning it counter-clockwise and pull out electrical plug.
Disengaging plug connection
10. Unscrew guide bush fastening screw with assembly aid 9663 and pull out bush.
Removing bush
Removing the electrohydraulic control unit
1. Loosen screws crosswise and remove ATF pan.
Removing ATF pan
2. Disconnect ATF filter downwards from electromagnetic control unit.
ATF filter
3. Unscrew fastening screws -arrow- for electromagnetic control unit and remove control unit.
Removing control unit
Installing electrohydraulic control unit
Information
The selector lever must be in position P in order to fit the electrohydraulic control unit.
1. Insert electrohydraulic control unit into the transmission from below. The selector valve must engage in the driver of the notched plate.
Selector valve and driver
2. Screw in fastening screws and tighten hand tight.
3. Tighten fastening screws.
4. Thinly coat gasket on the suction collar of the ATF filter with Vaseline and insert filter from below into electromagnetic control unit.
ATF filter
5. Clean ATF pan and place on transmission with new seal.
6. Screw in screws and tighten them crosswise. - Tightening torque: 8 Nm (6.0 ftlb.)
Assembly work
Information
Check sealing rings at the connector for signs of damage. If sealing rings are damaged, replace socket.
1. Insert socket at the correct position and tighten fastening screw.
Sealing rings
2. Insert electrical plug into socket and lock by turning clockwise.
Fit plug connection
3. Fit the holder for the coolant hoses.
Holder for coolant lines
4. Fit left drive shaft on transmission side.
5. Push vacuum line onto switch-over valve.
6. Engage the coolant hoses in the area of the left drive shaft.
Coolant lines
7. Engage cable and vacuum line in the retaining clips of the ATF pan.
8. Fit electric plugs.
Electric plug
9. Engage the coolant lines at the fastening points.
Holder for coolant lines
10. Install cross member.
Cross member
Subsequent work
Topping up ATF
Caution
Oil fill level too low
^ Risk of damage to components
- Do not start engine.
- Do not tow the vehicle.
Information
To undo and tighten the cap nut for the charging valve, counter with a ring wrench!
1. Unscrew control screw -2-.
ATF - control screw
2. Screw off cap nut -1- for the charging valve.
Cap nut
3. Screw connection hose 95071 onto charging valve.
Connection hose onto ATF - charging valve
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
4. Top up ATF through the charging valve until ATF emerges at the inspection bore.
Checking and topping up the ATF
^ The transmission must not be in the reduced driving program.
^ The ATF temperature must be between - ATF temperature: 30 degrees Celsius and - ATF temperature: 40 degrees Celsius. An ATF inspection when the temperature is too high causes insufficient filling, while an inspection when the temperature is too low causes over-filling.
^ The selector lever must be in position "P" and the engine must be idling.
^ The air conditioning must be switched off.
^ The vehicle must stand horizontally.
Information
The ATF temperature at the start of testing must not be higher than - ATF temperature: 40 gradCelsius.
1. PIWIS Tester 97180 must be connected before calling up the ATF temperature.
2. Put selector lever in position "P", start vehicle, and allow engine to idle.
3. Top up ATF via the charging valve until ATF runs out at the control bore.
4. With the brake pedal pressed, change through all selector lever positions, remaining in each position for approximately - Time: 10 s.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
^ Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
Warning
Hot fluid
Danger of scalding
- Let the fluid cool down.
- Wear personal protective gear.
5. Top up ATF through the charging valve again until ATF emerges at the inspection bore.
Subsequent work
1. Unscrew connection hose 95071 from ATF - charging valve.
2. Replace sealing ring for cap nut and screw on cap nut. - Tightening torque: 40 Nm (30 ftlb.)
3. Replace sealing ring for ATF control screw and screw in ATF control screw. - Tightening torque: 22 Nm (16 ftlb.)
4. Fit underbody panels.
5. Lower the vehicle.