Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Porsche Cayenne Base, AutomaticFACTORY OEM SERVICE PROCEDURE
CAN drive
The PSM control module exchanges data with the following components:
- Steering-angle sensor (in steering column switch)
- Airbag control module
- DME control module
- Tiptronic control unit
- Instrument cluster
- Level control module
- Transverse lock control unit
- Transfer box control unit
NOTE:
Data transfer via CAN data bus and the EBD function (electronic brake distributor) are guaranteed when the voltage at terminal 30 is more than '8.5 V'. The PSM control unit sends brake data via the CAN drive. A non-coded PSM control module does not send any brake data via the CAN drive.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.