Servicing air conditioner and heater - passenger compartment — VW

Important!
Always disconnect the battery earthing strap before working on the electrical system.
Note:

Please obtain the anti-theft code of the radio before disconnecting the battery.
When the battery is reconnected, please remember to check the vehicle equipment (radio, clock) in accordance with the Workshop Manual and/or the Instruction Manual.

Parts marked with * can only be serviced at specially-equipped service workshops, as the refrigerant must be evacuated with the service station V.A.G 1885.
Service work on refrigerant circuit which may only be carried out in workshops with trained mechanics. (Service workshops specially equipped for air conditioning)=>Page
87-37
.

Surround for dash panel insert
Removing

=> General Body Repairs, Interior;Repair Group 70; Dash panel, Removing dash panel
General Body Repairs, Interior
Dash panel, Removing dash panel

Centre air outlet
Removing => Page
80-5

Cover for dash panel
Removing

=> General Body Repairs, Interior;Repair Group 70; Dash panel, Removing dash panel
General Body Repairs, Interior
Dash panel, Removing dash panel

Front passenger-side air outlet
Removing => Page
80-5

Air outlet aperture for side window
Dash panel trim
Removing

=> General Body Repairs, Interior;Repair Group 70; Dash panel, Removing dash panel
General Body Repairs, Interior
Dash panel, Removing dash panel

Housing for evaporator and heat exchanger*
with water drain hose
The water drain hose is routed behind the centre console in the transmission tunnel

Temperature switch for evaporator -E33-
Removing and installing => Fig.
2

Regulating valve*

Dash panel
Opening for windscreen air outlet
Opening for driver's and front passenger-side air outlet
Opening for footwell air outlet
To centre air outlet
Control for hot air and fresh air
With switch for fresh and recirculating air flap and for fresh air blower switch -E9-
Removing and installing
=> Page
80-7
Dismantling and assembling
=> Page
80-9
Removing, installing and adjusting control cables => page
87-11

Rotary knobs

Switch for air conditioner -E35-
With bulb for air conditioner switch light -L43-
Removing => Fig.
1

Switch surround
Control cable for footwell flap (white sleeve)
Removing, installing and adjusting
=> Page
87-11

Control cable for regulating valve (blue sleeve with foam encapsulation)*
Removing, installing and adjusting
=> Page
87-11

Control cable for defroster flap (black sleeve with foam encapsulation)
Removing, installing and adjusting
=> Page
87-11

Fresh air blower relay -J13-
under the driver's seat

Magnetic coupling relay -J44-
under the driver's seat

Cut-out relay - solenoid coupling for air conditioner -J246-
only for engine codes AGX, AHD, BBE and BBF
under the driver's seat

Radiator fan relay -J26-
Only for engine code letter AGL
under the driver's seat

Control unit for magnetic coupling -J153-
Only for engine code letter AGL
under the driver's seat

Fig.1
Removing switch for air conditioner -E35-

Removing radio:

=> Electrical system; Repair group 91; Removing and installing radio
Electrical system
Removing and installing radio

Removing surround for dash panel insert:

=> Electrical system; Repair group 90; Removing and installing dash panel insert
Electrical system
Removing and installing dash panel insert

Unlock lugs on upper side and lower side of switch -1- using a screwdriver.
Push switch through the surround for the dash panel insert -arrow-.

Fig.2
Removing and installing temperature switch for evaporator -E33-

1 -
Temperature switch with housing
2 -
Filler pipe with identification of insertion depth
Purpose: Prevents icing up
Switching temperatures: Opens at temperatures from 0°C and below
Insertion depth of filler pipe, 226 mm

3 -
Rubber grommet

Removing

Remove dash panel cover:

=> General Body Repairs - Interior; Repair Group 70; Dash panel, Removing dash panel
General Body Repairs - Interior
Dash panel, Removing dash panel

Unscrew the self-tapping convex fillister head screw -arrow-.
Pull out the filler pipe -2- upright through the rubber grommet -3-.

Note:

The filler pipe is accessible underneath the glovebox.

Pull the temperature switch-1- upwards.
Identify the plugs of the temperature switch and pull them off.

Installing

Note:

When installing the temperature switch, please ensure that the bracket seats in the guide -arrow-.
Please pay attention to the filler pipe. A temperature switch with a kinked filler pipe should not be installed.