MDX V6-3471cc 3.5L (2002)
Heater Core: Service and Repair
Heater Unit/Core Replacement
Heater Unit/Core Replacement
SRS components are located in this area. Review the SRS component locations, and the precautions and procedures in the SRS section before
performing repairs or service.
1. Make sure you have the anti-theft code for the radio and the navigation system, then write down the frequencies for the radio's preset buttons.
2. Disconnect the negative cable from the battery.
3. 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.
4. When the engine is cool, drain the engine coolant from the radiator.
5. Slide the hose clamps (A) back, then disconnect the inlet heater hose (B) and the outlet heater hose (C) 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.
6. Remove the mounting nut from the heater unit. Take care not to damage or bend the fuel lines and the brake lines, etc.
7. Remove the dashboard.
