What Causes a Car Heater to Fail ?

What Causes a Car Heater to Fail? The cold weather has arrived, and it's now time to ensure that your car heater is pumping all the hot air that is required. Here are some potential reasons as to why a car's heater may not be functioning efficiently: LOW COOLANT LEVEL Although a weak or leaky radiator can be the reason behind a heater breakdown, a low level of coolant may also be the culprit. WHAT TO DO? Top up the coolant fluid reservoir. BLOWN FUSE A malfunctioning electrical system and a blown fuse may also cause car heater failure. Check if the fuse is working properly by locating and looking at the filament. If the fuse has blown, replace it. WHAT TO DO? |-N-| FAN MOTOR FAILURE A failed motor is a likely reason behind heater failure. The fan motor drives the heat radiated by the core into the interior of the car. WHAT TO DO? Get the motor checked. It will be easy to tell if it is not operational and may require replacement. CONTROL VALVE FAILURE A control valve functions is a thermostatic switch which activates or deactivates the flow of coolant. WHAT TO DO? Replacement is the only option if you wish to restore functionality. BLOCKED HEATER CORE Tubes often get blocked by accumulated debris, causing the heater to malfunction. WHAT TO DO? Replacement is the only solution to this problem. To prevent this from happening, you should flush and refill the cooling system with a 50/50 mix- ture of anti-freeze and water. AIR POCKET Air pocket in the heater hose or heater core may interfere with coolant flow. WHAT TO DO? Ensure that the coolant is circu- lating through the heater core. Do this by feeling both the hoses. Refill the cooling systems. Observing these steps will substantially reduce car heater failure. Information shared by: 01792 477316 PLATES4LESS http://www.plates4less.co.uk