RDX AWD L4-2.3L Turbo (2010)
Heater Core Case: Service and Repair
Heater Unit/Core Replacement
SRS components are located in this area. Review the SRS component locations See: Restraint Systems/Air Bag Systems/Locations and the precautions
and procedures See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Air Bag(s) Arming and Disarming/Service and Repair
before doing repairs or service.
1. Do the battery terminal disconnection procedure See: Starting and Charging/Battery/Service and Repair/Procedures.
2. Disconnect the A/C line from the evaporator core See: Evaporator Core/Service and Repair.
3. Remove the air cleaner housing assembly See: Engine, Cooling and Exhaust/Engine/Tune-up and Engine Performance Checks/Air Cleaner
Housing/Service and Repair.
4. From under the hood, open the cable clamp (A), then disconnect the heater valve cable (B) from the heater valve arm (C). Turn the heater valve
arm to the fully opened position as shown.
5. When the engine is cool, drain the engine coolant from the radiator See: Engine, Cooling and Exhaust/Cooling System/Coolant/Service and
Repair.
6. From under the hood, slide the hose clamps (A) back. Disconnect the inlet heater hose (B) and the outlet heater hose (C) from the heater unit. Note
the layout of the hose.
Engine coolant will run out when the hoses are disconnected; drain it into a clean drip pan. Be sure not to let coolant spill on the electrical parts or the
painted surfaces. If any coolant spills, rinse it off immediately.
