9902555 Replacing instrument cluster

WM 902555 Replacing instrument cluster

Tools





Technical values





Reading and writing values

NOTICE

Voltage drop

- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming

-> Prior to disconnecting the control unit, switch off the ignition and remove the ignition key.
-> Ensure that the power supply is not interrupted during programming.
-> Connect a battery charger with a current rating of at least => Nominal value: 40 A to the vehicle battery.

Information

The PIWIS Tester II 9818 instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms. Different text or additional information may appear in PIWIS Tester II 9818.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
2. Select the vehicle type and start the PIDT.
3. Select the required control unit Instrument cluster in the overview.
4. Select Maintenance/repairs.
5. Select the function Save fuel level sensor comparison values to rear-end electronics control unit and press F12.
6. Follow instructions on the Tester. Press F8 to start saving the values.
7. The fuel level sensor values are saved. Press F12.
8. Select Control unit replacement and press F12.
9. Select Read data and press F12.
10. Press F8 to start reading out data.
11. Check the chassis number and press F12.
12. Document the total distance and fuel level.
13. Switch off ignition and replace control unit. -> 902519 Removing and installing instrument cluster 902519 Removing and installing instrument cluster.
14. Switch on ignition and select Instrument cluster control unit.
15. Select the Extended identification menu.
16. Select Vehicle identification number and enter the VIN, then press "Enter" to confirm your entry.
17. Select Maintenance/repairs menu, Control unit replacement and Write data, then press F12 and press F8 to start. The data that was read out is installed.
18. The System Tester displays the message Data has been written. Press F12 to continue.
19. F11 must be pressed before selecting Maintenance/repairs and the function Restore fuel level sensor comparison values from the rear-end electronics control unit. Then press F12.
20. Read the warnings on the Tester and press F8 to start the process.
21. The fuel level sensor values are restored. Press F12.
22. Select the Set total mileage function and press F12.
23. Read the warning on the Tester and press F12.
24. Select the total distance and enter the value that was read out in Step 12. Then press "Enter" to confirm your entry and press F8 to write data.
25. Read out the fault memory and erase it if necessary.
26. Return to the overview of control units.
27. Check the function of the instrument cluster and fuel level gauge during the test drive.