Safety precautions

If special testing equipment is required during test drive, note the following

WARNING:

To reduce the risk of accident when using test equipment, proceed as follows:
Use only the VAS 5051 or VAG 1551 to read out measuring value blocks. Tester must always be secured to rear seat and operated from there by a 2nd person.

To reduce the risk of personal injury and/or damage of electric and electronic components, always observe the following

Always switch ignition off before connecting or disconnecting test/measurement tools.
It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all tests and repairs, DTC memory should therefore be checked and erased if necessary.
Always switch ignition off before disconnecting or connecting battery. Failure to do so may damage a control module.