A2
| Components in the engine compartment and in the rear of the vehicle |
| 1 - | Forced air extractor |
| q | The sealing lips on the vent frame must move freely and close automatically |
| q | To ensure proper functioning of the passenger compartment ventilation, the air ducts must not be blocked by the the luggage compartment lining |
| q | Checking → Chapter |
| 2 - | Fresh-air intake duct (in the engine compartment) |
| q | Fresh air is drawn in via the fresh-air intake ducts in the engine compartment and passenger compartment and via an air duct installed under the bonnet → Chapter and → Chapter |
| 3 - | Union in the refrigerant pipe (with restrictor) |
| q | The union is only to be opened after draining the refrigerant circuit; the vehicle must be taken to a specialist air conditioner workshop. |
| 4 - | Service connection |
| q | High-pressure side |
| q | for specialist air conditioner workshop for measuring, draining and filling |
| q | Always screw on the cap with the seal |
| 5 - | Service connection |
| q | Low-pressure side |
| q | for specialist air conditioner workshop for measuring, draining and filling |
| q | Always screw on the cap with the seal |
| 6 - | Radiator fan control unit -J293-2) |
| q | Actuated by the engine control unit, by the control unit in the dash panel insert -J285-, radiator fan thermoswitch -F18-, radiator fan thermoswitch -F54-and operating and display unit for air conditioner/Climatronic -E87-. → Current flow diagrams, Electrical fault finding and Fitting locations |
| q | Switches the radiator fan -V7- to the different stages. |
| q | Installed in different versions depending on the vehicle equipment → Parts List |
| q | Checking → Electrical System; Repair group 01 |
| 7 - | Reservoir |
| q | Must only be removed after draining the refrigerant circuit; the vehicle must be taken to a specialist air conditioner workshop |
| q | Removing and installing → Chapter |
| 8 - | High-pressure sender -G65-1) |
| q | Function, removing and installing → Chapter |
| q | The measured value for the high-pressure sender -G65- is displayed in the “Read measured value block” function by the operating and display unit for air conditioner/Climatronic -E87- → Chapter |
| 9 - | Ambient temperature sensor -G17- |
| q | Removing |
| – | Removing front bumper; → General Body Repairs, Exterior; Repair group 63 |
| – | Unplug the connector at the ambient temperature sensor -G17- and unclip from the mount in the air duct. |
| q | Resistance values → Chapter |
| q | The measured value of the ambient temperature sensor -G17- is evaluated by the control unit in the dash panel insert -J285-and transmitted via the convenience data bus to the operating and display unit for air conditioner/Climatronic -E87-. → Electrical System; Repair group 01 |
| 10 - | Condenser |
| q | Must only be removed after draining the refrigerant circuit; the vehicle must be taken to a specialist air conditioner workshop |
| q | Detaching and re-attaching refrigerant pipes → Chapter |
| q | Removing and installing condenser → Chapter |
| 11 - | Air conditioner compressor regulating valve -N280-1,2) |
| q | Checking actuation and function → Chapter |
| 12 - | Compressor |
| q | Detaching and re-attaching compressor from/onto bracket → Chapter |
| q | Detaching and attaching refrigerant pipe from/to the compressor → Chapter |
| q | Removing and installing compressor → Chapter |
| q | Removing and installing poly-V-belt → Engine Mechanical Components; Repair group 13 |
| q | Replacing pulley → Chapter |
| 13 - | Condensation drainage valve |
| q | Checking → Chapter |
| q | Removing and installing → Chapter |