902555 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.

Information

If the instrument cluster is replaced, the fuel-level sensors must be calibrated using PIWIS Tester II 9818.

- To calibrate the fuel-level sensors, the fuel tank must be drained completely.

1. Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
2. Select vehicle type.
3. Select the required control unit Instrument cluster in the overview.
4. Select Maintenance/repairs.
5. Select Control unit replacement and press F12.
6. Select Read data and press F12.
7. Press F8 to start reading out data.
8. Check the chassis number and press F12.
9. Document the total distance.
10. Switch off ignition and replace control unit. -> 902519 Removing and installing instrument cluster 902519 Removing and installing instrument cluster.
11. Switch on ignition and select Instrument cluster control unit.
12. 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.
13. The System Tester displays the message Data has been written. Press F12 to continue.
14. Select the Set total mileage function and press F12.
15. Select the total distance and enter the correct mileage (value from the "old" instrument cluster). Then press "Enter" to confirm your entry and press F8 to write data.
16. Follow the instructions on the Tester and press F8 to start the process.
17. Select the Calibrate fuel-level sensor function and press F12.
18. Follow the instruction on the Tester. Press F12. Tank must be completely empty. -> 200317 Draining and filling fuel Procedures
19. Calibrate fuel-level sensors in accordance with the instructions on the Tester.
20. Read out the fault memory and erase it if necessary.
21. Return to the overview of control units.
22. Check the function of the instrument cluster and fuel level gauge during the test drive.