Heating and A/C Unit

Heating and A/C Unit

Special tools, testers and auxiliary items required

• Drip Tray For Shop Crane (VAS 6208)

• Hose Clamps Up To Diameter 40 mm (3093)

• Robinair A/C Service Unit (ROB 134APF)

Hybrid vehicles have a high voltage system. Danger of electrical shock! It will also be necessary to work on the high voltage system when performing the following procedures. Switch off the high voltage system.

Removal

Danger due to refrigerant coming out under pressure.

Danger of frost bite to skin and other parts of the body.

• Extract the refrigerant and immediately open the refrigerant circuit after that.

• If the refrigerant was extracted more than 10 minutes in the past and the refrigerant circuit was not opened, extract the refrigerant again. Pressure in the refrigerant circuit is caused by evaporation.

• Extract the refrigerant using the (ROB 134APF).

• See notes, refer to => [ Refrigerant Circuit Components in Engine Compartment, Servicing ] Refrigerant Circuit Components in Engine Compartment, Servicing.

- Remove the instrument panel.

- Remove the air intake shroud. Refer to => [ Intake Housing ] Service and Repair.

- Remove the expansion valve. Refer to => [ Expansion Valve ] Expansion Valve.

- Remove the air guides for the heater and A/C unit.

- Place (VAS 6208) under the engine.

The coolant system is under pressure when the engine is warm!

There is a risk of scalding from hot steam and coolant.

To reduce the pressure, cover the coolant reservoir cap with several cloths and then open it carefully.

- Discharge the coolant circuit.

- Loosen the refrigerant lines at the bolts - 1 -.






- Loosen the coolant lines on the heater core. Refer to => [ Heater Core ] Service and Repair.

- Remove the condensation water hose from the heater and air conditioner.

- Disconnect the connectors from the heater and air conditioner.

- Remove the subframe..






- Remove the nuts - 1 - from the heater and A/C unit on the engine compartment side.

- Remove heating and A/C unit.

Installation

Install in reverse order of removal.

- Replace coolant pipe O-rings.

Torque of coolant pipe screws to expansion valve is 10 +/- 1 Nm.

• During installation, ensure that the condensation water drain hose is seated properly and is not bent.