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64 53 521 Replacing safety pressure switch (N63)

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WARNING: Danger of injury!

Refrigerant circuit is under high pressure!

Avoid contact with refrigerant and refrigerant fluid.

Read and comply with SAFETY INFORMATION .

IMPORTANT: Risk of damage!

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: 

Release screws (1).

Tightening torque 12 90 2AZ .

Remove electronics box cover (2).

Fig 1: Identifying Electronics Box Cover And Screws
G06888959Courtesy of BMW OF NORTH AMERICA, INC.

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).

Fig 2: Identifying Connectors, Grommet Hold-Down Device And Rubber Grommets
G06888960Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Remove lead (2) from connecting piece.

Fig 3: Identifying Lead And Screws
G08514291Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Release safety pressure switch (2).

Tightening torque 64 53 8AZ .

Fig 4: Identifying Plug Connection And Safety Pressure Switch
G06886390Courtesy of BMW OF NORTH AMERICA, INC.

After installation: 

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