BMW 7 Series: Replacing Desiccant Insert For Air Conditioning System
Notes
WARNING: Danger of injury!
Refrigerant circuit is under high pressure! Follow safety information for handling R134a tetrafluorethane refrigerant.
Follow safety information for HANDLING REFRIGERANT FLUID.
Avoid contact with refrigerant and refrigerant fluid.
IMPORTANT: Risk of damage! Restart engine only when air conditioning system has been correctly filled.
Follow INSTRUCTIONS for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours: replace desiccant insert for air conditioning system
Follow INSTRUCTIONS ON REPLACING DESICCANT INSERT.
Necessary preliminary work
- DRAIN OFF AIR CONDITIONING SYSTEM
- Remove UNDERBODY PROTECTION.
NOTE: Pictured in removed state.
The condenser does not need to be removed for the following operations!
Remove protective cap (1) from capacitor (2).
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Fig. 240: Identifying Protective Cap And Capacitor
Press sealing cap (1) inwards and remove circlip (2).
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Fig. 241: Pressing Sealing Cap
With assistance of a screwed-in screw (1), remove sealing cap from capacitor (3).
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Fig. 242: Removing Sealing Cap From Capacitor
Installation note: Replace sealing rings.
Use special tool 00 9 030 to mount sealing rings without damaging them.
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Fig. 243: Identifying Sealing Rings
IMPORTANT: Risk of damage!
Removal is made more difficult if bridge (2) is damaged!
Carefully pull out desiccant insert (1) with a pair of wide pliers on bridge (2).
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Fig. 244: Pulling Out Desiccant Insert With Wide Pliers On Bridge
REPLACING SAFETY PRESSURE SWITCH (N63)
WARNING: Danger of injury! Refrigerant circuit is under high pressure! Avoid contact with refrigerant and refrigerant fluid.
Read and comply with safety information:
- Follow safety information for handling R134a tetrafluorethane refrigerant.
- HANDLING REFRIGERANT FLUID
IMPORTANT: Risk of damage! Restart engine only when air conditioning system has been correctly filled.
Follow INSTRUCTIONS 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.
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).
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Fig. 245: Identifying Electronics Box Cover And Screws
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).
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Fig. 246: Identifying Rubber Grommets And Connectors
Release screw (1).
Remove lead (2) from connecting piece.
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Fig. 247: Identifying Lead And Screw
Unfasten plug connection (1) and disconnect.
Release safety pressure switch (2).
Tightening torque 64 53 8AZ.
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Fig. 248: Identifying Safety Pressure Switch And Plug Connection
After installation
- EVACUATE AND FILL AIR CONDITIONING SYSTEM
READ NEXT:
Instrument Cluster
Removing And Installing/Replacing Instrument Cluster
Notes
IMPORTANT: Read and comply with notes on protection against electrostatic
damage (ESD
PROTECTION ).
Necessary preliminary work
Disconnect
Head-Up Display
ADJUSTING HEAD-UP DISPLAY
NOTE: Vehicles with head-up displays are fitted with special windscreens.
These windscreens are marked with the letters "HUD" on the outside at the
bottom right below the se
Instruments
Instruments - Special Tools
VADAPTER
Adapter MW
Note: (Adapter 15/20-pin) only for oil service - Replaced by 62 1 140, July
94
Storage Location
I 106
ADAPTER
Adapter MW
Note: For instrument panel
Sto
SEE MORE:
Replacing Audio Unit
IMPORTANT: Read and comply with notes on protection against electrostatic
damage (ESD
PROTECTION).
IMPORTANT: Use of supplied gloves is mandatory
Carry out installation in a dust-free workshop area only.
To avoid damage, do not touch or dirty the display field.
Necessary preliminary work:
Remove
Hazard Warning Lights
The hazard warning lights are switched on by pressing the hazard warning
switch. As a result, all direction
indicator lights are activated simultaneously and the indicator in the hazard
warning switch flashes in time.
The steering column switch has priority if it is moved in left or right
direct
