13 53 596 Replacing high-pressure fuel sensor (N54)
Clamp off BATTERY NEGATIVE LEAD (risk of fire due to short-circuiting on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40°C.
Fuel can emerge spontaneously at high velocity when the high-pressure line is released!
Introduced contaminants can cause malfunctions in the system!
- Do not allow any dirt particles or foreign bodies to get into the system.
- Remove all traces of dirt before removing pipes or individual components.
- Use only fluff-free cloths.
- Seal all fuel system openings with protective caps or plugs.
Necessary preliminary tasks
- Remove ACOUSTIC COVER .
Recycling
Fuel escapes when fuel lines are detached.
Catch and dispose of escaping fuel in a suitable container.
Observe country-specific waste-disposal regulations.
Unlock plug (1) and remove.
Release high-pressure sensor (2) and remove.
Tightening torque 13 53 3AZ with special tool 32 2 100.
Seal rail (3) if necessary with a matching plug from special tool kit 32-1270 PLUG .
The high-pressure sensor may only be screwed back in 3 times!
Therefore mark the sensor with a blue dot each time it is screwed back in.
Assemble engine.
Check fuel system for leaks.
Check function of DME.