Control Module: Service and Repair
WM 373019 Removing and installing Tiptronic control unit
Tools
Removing Tiptronic control unit
Installation position of Tiptronic control unit
Information
- The control unit is located under the right front seat.
1. The ignition key must be removed before pulling the connector off the control unit.
2. Move right front seat all the way back and up.
3. If the Tiptronic control unit is replaced, observe the points under coding the control unit. -> 373019 Removing and installing Tiptronic control unit - section on "Coding"
4. Unclip right front seat trim and remove drawer.
5. Unscrew the fastening screw for the holder.
Unscrewing fastening screw for holder
6. Move the seat all the way forward.
7. Release the two connectors -A- and pull them off -B-.
Releasing and removing connectors
8. Remove the holder with the two control units -C-.
9. Release the locking lugs on both sides -A- and pull out the control unit -B-.
Releasing locking lugs and removing control unit
Installing Tiptronic control unit
Installation position of Tiptronic control unit
1. Insert the control unit into the holder -A- until the locking lugs -B- engage securely.
Inserting and engaging control unit
2. Connect the two connectors -A- and slide in the locking mechanism -B- until it engages securely.
Connecting and locking connectors
3. Place the holder with the two control units in installation position -C-.
4. Move seat all the way back and tighten the holder with the fastening screw.
Tightening fastening screw
5. Clip in right front seat trim and install drawer.
6. If the Tiptronic control unit is replaced, observe the points under coding the control unit. -> 373019 Removing and installing Tiptronic control unit - section on "Coding"
Coding Tiptronic control unit
Information
- The adaptation values must be reset using the PIWIS Tester 9718 when the transmission is renewed/replaced.
- If a new control unit is installed, it must adapt first. Poor shifting quality can therefore be expected in the adaptation phase.
- After the test drive, let the engine run for 10 minutes at idle speed. This ensures that all adaptation values are stored in the control unit.
- The instructions of the PIWIS Tester 9718 have highest priority.
- The procedure described here has been structured generally, changes or additions may be displayed.
- The PIWIS Tester 9718 instructions take precedence and in the event of a discrepancy these are the instructions that must be followed. Deviations may occur with later software versions.
- During coding, it is essential to guarantee the power supply for the PIWIS Tester 9718. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
- Symbol for the Tab key = ?|
1. PIWIS Tester 9718 must be connected to the vehicle, then start the tester. Switch on ignition. >> Continue.
2. Select vehicle type using the cursor keys.
3. Using the >> key, move from the vehicle type to the list of control units. Perform the automatic control unit search.
4. Select Tiptronic with the cursor keys and press the >> key.
5. Select Control unit replacement with the cursor keys and press the >> key.
6. Select Read out values (codings) with the cursor keys and press >>.
7. The screen of the PIWIS Tester 9718 displays the message Codings were read out >>.
8. Switch off ignition and replace Tiptronic control unit. -> 373019 Removing and installing Tiptronic control unit - section on "removing"
9. Switch on ignition.
10. After replacement of the control unit, the vehicle data is installed under the menu Write in data read out (see Section 6). Press the >> key.
11. System Tester displays Coding write-in complete. Press the >> key.
12. Exit the menu, switch off ignition, lock vehicle and read out fault memory once more.
Information
- If the data could not be read out with the PIWIS Tester 9718 , the version listed must be coded using the menu item "Codings".
