Safety precautions when working on fuel supply system
WARNING: This page is about a different variant/trim than selected.
CAUTION:
When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:
- Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
- To prevent damages to the lines, make sure there is sufficient clearance to all moving or hot components.
Always observe the following when removing and installing the fuel gauge sensor or the fuel pump (fuel delivery unit) from full or partially filled fuel tanks:
CAUTION:
Fuel supply line is under pressure! Wear protective goggles and protective clothing to prevent injuries and contact with skin. Before removing from hose connection wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
- Before starting work, switch on exhaust extraction system and place an extraction hose close to the installation opening of fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan (as long as motor is not in air flow) with a displacement greater than 15 m 3 /h can be used.
- Prevent fuel from contacting skin! Wear fuel-resistant gloves!
- For safety reasons, fuse No. 28 must be removed from fuse holder before opening fuel system as fuel pump can be activated by door contact switch in drivers door.