64 53 521 Replacing safety pressure switch (N63)

Follow notes for OPENING AND REPLACING PARTS in refrigerant circuit.

If air conditioning system is opened for more than 24 hours: Replace dryer insert for air conditioning. 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 CROSS-BRACE
• Remove right INTAKE PORT

Release screws (1).

Tightening torque 12 90 2AZ .

Remove electronics box cover (2).

Fig 1: Identifying Electronics Box Cover And Screws

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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 (for watertightness).

Fig 2: Identifying Rubber Grommets, Grommet Hold-Down Device And Connectors

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Release screw (1).

Remove lead (2) from connecting piece.

Fig 3: Identifying Lead And Screw

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Unfasten plug connection (1) and disconnect.

Release safety pressure switch (2).

Tightening torque 64 53 8AZ .

Fig 4: Identifying Plug Connection And Pressure Switch

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After installation: 

• EVACUATE AND FILL AIR CONDITIONING SYSTEM