MDX V6-3.7L (2007)
Heater Core Case: Service and Repair
Heater Unit/Core Replacement
SRS components are located in this area. Review the SRS component locations and the precautions and procedures before doing repairs or service.
1. Make sure you have the anti-theft codes for the audio system and the navigation system (if equipped).
2. Make sure the ignition is OFF, then disconnect the negative cable from the battery.
3. Disconnect the front receiver line and front suction line from the front evaporator core.
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.
6. Remove the clamp (A). Slide the hose clamps (B) back. Remove the nut and the water valve (C), then disconnect the inlet heater hose (D) and the
outlet heater hose (E) from the heater unit.
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.
7. Remove the mounting nuts from the heater unit. Take care not to damage or bend the fuel lines or brake lines, etc.
8. Remove the dashboard.
