Cayenne Turbo (9PA) V8-4.8L Turbo (2008)
Engine Control Module: Service and Repair
Removing And Installing DME (DFI) Control Unit
Tools
Information: Adaptation of the DME (DFI) control unit
INFORMATION:
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If the DME (DFI) control unit is replaced, it must be programmed using the PIWIS Tester 9718. This adapts the DME (DFI) control unit to the
vehicle, country version and equipment. The DME (DFI) control unit is located in the plenum panel close to the right wing.
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Before the DME (DFI) control unit is removed and replaced, a read-out of the vehicle data should be obtained (if possible) using the PIWIS Tester
9718.
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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. The description is based on the 17.10 version.
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When replacing one of the following components >> DME (DFI) control unit and/or high-pressure pump (also when replacing the engine) <<
from the fuel system, the adaptations in the DME (DFI) control unit must be adapted to the system again.
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Rough engine running is possible until the adaptations are completed.
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Noticeable decreases in engine performance may also occur.