Safety Precautions

Safety Precautions

Note the following when working on the fuel system:

CAUTION!
There is a risk of injury because the fuel is under very high pressure.

• Before opening high pressure area of the fuel injection system, fuel pressure must be relieved to residual pressure.

• To reduce remaining residual pressure, lay a clean cloth around the connector and carefully loosen connector.

To prevent personal injury and damage to the injection and ignition system, observe the following:

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

• Only clean engine with ignition switched off.

• If electrical connectors were disconnected, faults are saved in ECM:

- Connect Vehicle Diagnosis, testing & info. system (VAS 5051).

- Start "Guided Functions" operating mode.

- Generate readiness code in ECM.

CAUTION!
Risk of destroying electrical components when battery is disconnected.

• Observe measures when disconnecting battery.

• Only disconnect battery with ignition switched off.

Note the following when working on the cooling system:

CAUTION!
Risk of scalding due to hot steam and hot coolant.

• When the engine is warm the cooling system is under pressure.

• To reduce pressure, cover coolant reservoir cap with cloth and carefully open.

If it is necessary to use testing and measuring devices on road tests, observe the following:

CAUTION!
Risk of injury due to deployment of passenger airbag in a collision.

• Always secure testing and measuring equipment on the rear seat and have a second person operate it from there.