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Home >> Porsche >> 2021 >> Taycan Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> 90 Instruments -- Y1A - TAYCAN (Y1A) >> WM, 902255 Replacing Additional Instrument (Stopwatch) >> Reading And Writing Values

Reading And Writing Values

NOTE: NOTIFICATION 
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 ignition and remove ignition key.

    → Ensure that the power supply is not interrupted during programming.

    → Connect a battery charger with a current rating of at least 90 A to the vehicle battery.

Information 

The instructions in the Tester  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 the Tester  .

  1. Connect the Tester to the vehicle and start it. Switch on ignition.
  2. Select the vehicle type and start the diagnostic application.
  3. Select the required control unit Additional instrument (stopwatch)  in the overview. Press F12 to continue.
  4. Maintenance/repairs  must then be selected.
  5. Control unit replacement  must now be selected. Then press F12.
  6. Read data  must now be selected. Then press F12.
  7. Press F8 to start reading out data.
  8. Check the chassis number and press.
  9. Switch off ignition and replace control unit.

    > 902219 REMOVING AND INSTALLING ADDITIONAL INSTRUMENT (STOPWATCH) 

  10. Switch on ignition. Select the Write data  menu (procedure described above), press F12 and then press F8 to start installing the data that was read out.
  11. The Tester displays the message Data has been written  . Press F12 to continue. Switch ignition of and then on again.
  12. Read out fault memory and erase it if necessary.