Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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MHPAUTOS
CAR REPAIR CONTRIBUTOR
31,937 POSTS
either the heater control valve under the plastic trim on the top of the fire wall has failed or the actual controller which is built into the switch panel has failed, check the tap first.