64 53 521 Replacing safety pressure switch (vehicles with N63 engine): Notes
Danger of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.
Read and comply with SAFETY INSTRUCTIONS
Restart engine only when air conditioning system has been correctly filled.
Follow notes for OPENING AND REPLACING PARTS IN REFRIGERANT CIRCUIT .
If air conditioning system is opened for more than 24 hours: replace desiccant insert for A/C system. See REPLACING DESICCANT INSERT or REPLACING DESICCANT INSERT (CAPACITOR REMOVED) .
Necessary preliminary work:
- Drain off AIR CONDITIONING SYSTEM
- Disconnect BATTERY EARTH LEAD
- Remove RIGHT SUSPENSION CROSSBRACE
- Remove engine INTAKE DUCT on right.
Release screws (1).
Tightening torque 12 90 2AZ .
Remove electronics box cover (2).
Unclip and unplug all connectors (1) from control units.
Unclip grommet hold-down device (2) and remove.
Detach rubber grommets (3) from electronics box.
Place wiring harnesses to the side.
Installation note:
Make sure grommets are is correctly seated (watertightness).
Release screw (1).
Remove lead (2) from connecting piece.
Unfasten plug connection (1) and disconnect.
Release safety pressure switch (2).
Tightening torque 64 53 8AZ .