General instructions/safety instructions

The following points must be observed during vehicle diagnosis:

After the battery is connected, volatile memories must be reprogrammed. In the case of radio coding and tuning, the customer must be informed of decoding and the deleted tuner memory. Carry out work instruction after disconnecting the battery. Refer to 90 IN Work instructions after disconnecting the battery - as of MY 2003 (All Models Except Cayenne S TIO Titan) must be observed.
After troubleshooting or repairs, erase the fault memory with the 9588 Porsche System Tester II and carry out a test drive.
After the test drive, read out the fault memory again with the 9588 Porsche System Tester II.

WARNING:

Danger of injury through triggering of driver's airbag

WARNING: Danger of injury and damage due to unusual vehicle handling when plugs or components are disconnected!

Never disconnect plugs when the vehicle is in motion or drive the vehicle with plugs disconnected.
Drive only with all parts fully installed and connected.

WARNING: Danger of personal injury from lowering vehicle independently when working on and underneath the vehicle!

The normal level must always be set and the level control switched off when the vehicle is raised with the jack or platform lift.

WARNING: Danger of personal injury from moving vehicle independently with gear engaged and engine running!

Before starting the engine in a vehicle with manual transmission, take the vehicle out of gear and put the hand brake on firmly.
Before starting the engine in a vehicle with automatic transmission, move the selector lever to position V and put the hand brake on firmly.

CAUTION: Danger of injury and material damage if the wheel carrier is raised incorrectly!

Do not raise the wheel suspension higher than the normal vehicle position (vehicle resting on wheels)! When raising, use a suitable intermediate layer (hard rubber)!
Do not damage the brake cover plate!

CAUTION: The vehicle rises when the air springs are filled!

CAUTION: Danger of damage due to improper handling of batteries and control module plug connections!

Never disconnect battery with engine running.
Never start engine if battery terminal clamps are not connected securely.
Never pull off or push on plug connections for the control modules or other electronic components when the ignition is switched on.
Always disconnect the negative terminal of the battery and pull off all plug connections to the vehicle electrical system control module when carrying out welding work on the vehicle.

NOTE: If a relay fault or multiple valve faults are recorded, check the system's plug connections for correct contacts.