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Kevin Bourcier
Kevin Bourcier,
Category: Toyota
Satisfied Customers: 118
Experience:  Owner/Technician at Max Air Mobile
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The heater doesn't work. When it is placed on heat it just

Customer Question

The heater doesn't work. When it is placed on heat it just continues to blow cold air. it is a 2009 toyota 4runner
JA: Have you checked the coolant level? Have you checked for a leak in the radiator?
Customer: coolant level is fine and the engine is not overheating
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: trying to fix it myself. It seems as if the heater door isn't opening
JA: Anything else you think the mechanic should know?
Customer: it just seems as if no air is diverted to the heater core
Submitted: 1 year ago.
Category: Toyota
Expert:  Kevin Bourcier replied 1 year ago.

it is most likely a faulty air door servo motor stuck in the " cold " position . see the illustration . see item - air mix damper control servo . Lower left in the illustration . Do your heater hoses at the firewall both feel HOT and the same temperature ?