Heater Assembly

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The heater assembly controls the temperature and flow of air supplied to the air distribution ducts. The heater assembly is mounted on the vehicle centerline, between the instrument panel and the engine bulkhead.

The heater assembly consists of a casing that contains an A/C (air conditioning) evaporator, a heater core, two air distribution control doors and two temperature blend control doors. All vehicles (except 5.0 L NA and SC) fitted with the heater assembly also contain an electric booster heater.

Refer to: Electric Booster Heater (Description and Operation).

NOTE: In warmer climate markets (e.g. Spain), vehicles are not fitted with the electric (PTC (positive temperature coefficient)) booster heater.

Mounted on the heater casing are four stepper motors. Each of the stepper motors is connected to either an air distribution control door or a temperature blend control door.

The A/C evaporator is part of the A/C system.

The heater core provides the heat source to warm the air supplied to the passenger compartment. The heater core is an aluminum two pass, fin and tube heat exchanger, and is installed across the width of the heater housing. Two aluminum tubes attached to the heater core extend through the engine bulkhead and connect to the engine cooling system. For additional information, refer to the applicable engine:

For GTDi 2.0L, refer to Engine Cooling (Description and Operation).

For V6 S/C 3.0L, refer to Engine Cooling (Description and Operation).

For V8 5.0L Petrol/V8 S/C 5.0L, refer to Engine Cooling (Description and Operation).

For V8 5.0L Petrol/V8 S/C 5.0L, refer to Specifications (Specifications).

For Supercharger Cooling - V8 S/C 5.0L, refer to Supercharger Cooling (Description and Operation).

For Supercharger Cooling - V6 S/C 3.0L, refer to Supercharger Cooling (Description and Operation).