Safety Precautions

Safety Precautions

Note the following when working on the fuel system:

CAUTION!
Fuel system is under pressure! Before opening system, place clean rags around the connection. Then release pressure by carefully loosening the connection.

To reduce the risk of personal injury and/or damage to the fuel injection and ignition system, always observe the following:

• The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.

• It is possible that the engine control module will recognize a malfunction and store a DTC during some tests. Therefore, when all tests and repairs are completed, the DTC memory must be checked and, if necessary, erased. After DTC memory is erased, a readiness code must be generated for the engine control module using operating mode "Guided Functions".

• Clean engine only with the ignition switched off.

CAUTION!
• Observe safety precautions when disconnecting the battery.

• The battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module (ECM) can otherwise be damaged.

Note the following when working on the cooling system:

CAUTION!
Cover cap of coolant expansion tank with rag and open carefully, as hot steam or hot coolant may escape when opening.

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

CAUTION!
• Test and measuring equipment must always be secured to the rear seat and be operated from there by a second person.

• If test and measuring instruments are operated from the front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.