Replacing Occupant Detection Control Unit
- 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 → Nominal value: 40 A to the vehicle battery.
Information
If occupant detection components (installed for country equipment USA/Canada/Mexico) must be replaced, the repair kit comprising padding, occupant detection control unit and pressure sensor mat must always be replaced as a complete unit .
The spare parts are grouped in a repair kit (comprising padding -1-, occupant detection control unit -2- and pressure sensor mat -3-), which must always be replaced as a complete unit.
- Padding
- Occupant detection control unit
- Pressure sensor mat
A Mixed Installation , e.g. "old" pressure sensor mat and "new" control unit, is Not Permitted .
The padding, pressure sensor mat and occupant detection control unit are calibrated together by the manufacturer and must therefore only be replaced as a complete unit.
The occupant detection control unit does not have to be coded.
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 .
- Connect the Porsche System Tester to the vehicle and start the System Tester. Switch on ignition.
- Select the vehicle type under Diagnostics .
- Start the Control Unit Search in the overview by pressing [F12].
- Select Airbag control unit in the Overview and press [F12] to continue.
- Select the Maintenance/Repairs menu. Then select Calibrate Seat Occupancy Detection and complete the calibration process according to the instructions on the Tester.
- Switch off ignition and remove the remote control (hand-held transmitter) from the ignition lock.
- Insert the remote control back into the ignition lock and switch on ignition.
- Read out the fault memory and erase it if necessary.
- Perform a function test: Switch the ignition off and then on again. The airbag warning light in the instrument cluster comes on and must go off again after a few seconds.