Fuel System, Filling/Bleeding
Special tools and workshop equipment required
- Vehicle Diagnostic Tester
If fuel system components between the fuel tank and high pressure fuel pump are removed or replaced, then a bleeding must be performed.
Risk of Destroying the Fuel Pump
After procedures on the fuel system it is possible to damage the fuel pump by running it dry.
-- Never let the fuel pump run dry.
-- Fill or bleed the fuel pump.
To Fill the High Pressure Fuel Pump with Fuel, Proceed as Follows:
- Check the fuel gauge in the instrument cluster. The gas needle must not be in the reserve area.
-- Connect the Vehicle Diagnostic Tester.
-- Select Diagnostic operating mode and Start diagnostics .
-- Select the Select individual test tab and select the following tree structure consecutively:
- Drivetrain
- Select the engine code and engine
- 01- OBD-capable systems .
- 01 - Engine Electronics
- 01 - Engine electronics, functions
- Fuel pump activation
- Press Preform the test
- Select 120 seconds.
-- The fuel pump must run for approximately 120 seconds to make sure the fuel system is sufficiently filled with fuel.
-- Start the engine after filling the fuel system.
-- Let the engine run for a few minutes at an average speed and then shut it off.
-- Check the fuel system for leaks.
-- Perform a road test and fully depress the accelerator pedal at least one time.
-- Check the high pressure area again for leaks.