Working On Fuel System
WARNING: This page is about a different variant/trim than selected.
Note the following When Working on the Fuel System:
WARNING:
- The injection system is separated into a high-pressure section (maximum approximately 120 bar (1740 psi)) and a low-pressure section (approximately 6 bar (87 psi)).
- Before opening the high pressure area, the fuel pressure must be reduced in the high pressure area. Refer to RELEASING PRESSURE IN HIGH PRESSURE AREA .
WARNING:
There is a risk of injury because the fuel is under pressure.
- Place clean rags around the connection before opening the system. Then release pressure by carefully loosening the connection.
- Wear safety gloves.
- Wear protective eyewear.
Very hot fuel can cause burns.
- The temperature of the fuel lines and may reach 100 °C (212 °F) after stopping the engine. Let the fuel cool down before opening any line connections otherwise there is a danger of scalding.
- Wear safety gloves.
- Wear protective eyewear.
WARNING:
Danger due to leaking fuel.
- Because the Transfer Fuel Pump -G6- runs briefly when the battery is connected and the driver's door is opened, the voltage supply to the Transfer Fuel Pump -G6- must be disconnected before opening the fuel system.
CAUTION:
Risk of destroying electronic components when disconnecting the battery.
- Make sure to complete the steps for disconnecting the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .
-- Procedures before opening high pressure fuel injection system. Refer to SAFETY PRECAUTIONS AND CLEAN WORKING CONDITIONS .
To Prevent Personal Injury and Damage to the Injection and Ignition System, Observe the Following:
- Individuals with a pacemaker must not stay in the danger area of high voltage systems, for example ignition systems, xenon light.
- Fuel lines must not be opened when engine is running.
- The ignition must be switched off before connecting or disconnecting injection and ignition system wiring or tester cables.
- Wash the engine only when the ignition is turned off.
-- Disconnect the battery. Refer to BATTERY, DISCONNECTING AND CONNECTING .
Delete any DTC memory entries that occurred during testing or assembly using the Vehicle Diagnostic Tester, in Guided Functions , Check DTC memory , and then Generate readiness code .