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Will the air conditioning work in your car if the battery is dead?
Wiki User
∙ 13y ago
If your car's engine is still running (with a dead battery), then yes, the air conditioning will still work. The fans of the ventilation system is driven electrically from power generated by the alternator. The compressor is driven off a belt and in recent fuel economy minded cars, by electricity off the alternator.
However, the show's over once the engine is switched off. You won't be able to start it by electric cranking the next time.
If your car has a manual transmission, you can still start the engine by push starting (i.e. rolling down a hill in neutral till you attain a high enough speed and releasing the clutch with the 2nd gear engaged).
The only time when the air conditioner stops functioning with a running engine is when the auxiliary belt (aka serpentine belt or fan belt) breaks.
Wiki User
∙ 13y ago
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