Cayenne S (9PA) V8-4.5L (2003)
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1. Support the heater/ A/C unit under the centre section -A- and under the evaporator -B- with a plastic or wooden board.
2. Unscrew both fastening screws on the left heat exchanger cover and unclip the cover.
3. Unscrew the fastening screw on the right heat exchanger cover and unclip the cover.
4. Pull the retaining clips -A- of the coolant supply line and return line downward.
