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Heater radiator: common faults and their symptoms

Loss of hermeticity
- Increased consumption of coolant.
- When the heater is activated, the air in the passenger compartment becomes more humid.
- Sometimes the coolant may leak into the passenger compartment from the heater core.
- Warm air is not blowing from the heater.
Clogging
- Even when the engine is warmed up, cold air blows from the heater.
- The heater cannot be activated.
- The heater does not operate correctly in all modes.

How to repair or replace the heater radiator?

Repair of heater radiator comprises its flushing and removing foreign objects. This procedure is also recommended for preventing problems before symptoms are discovered. To be sure of the quality of work, it is better not to attempt to clean the component yourself, and contact a service station.

It is not always possible to clean the heater core. There are many vehicle models where it is to be replaced only. This car part is located in a hard-to-reach location, and its replacement often requires dismantling of the front console, therefore, you should entrust replacement to professionals.

Together with replacement of the heater radiator, it is recommended to check the cabin air filter and coolant, and replace them if necessary.

Heater/cooling system Car parts: