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Can running the blowers for the AC with the engine off drain the battery?

Can running the blowers for the AC with the engine off drain the battery?

If you run the AC when the car is off, it not only puts a strain on the battery, it can completely drain it. Now, if the car is running, and barring no issues ( bad alternator etc), it puts a load on the battery, but the alternator is able to keep up with the demand. Yes!

Can a car fan still run after the engine is turned off?

Then you notice the engine cooling fan is still running even though the car is turned off. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Your car fan will run for a few minutes after you turn off the car then turn off. This is normal in many vehicles, such as BMW or Mercedes-Benz.

Why does the radiator fan run all the time?

The radiator fan may run up to five minutes and sometimes longer. Unless there is an electrical issue, it may stay on all the time until it drains the battery. When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated.

Why does my bike fan not stop running?

At times the battery (6 volt) would be near dead in one hour after shutting the bike off. The problem was a sticking set of points in the voltage regulator that voltage ran through from the gen. to the batt. The points were supposed to pop apart to prevent battery drain back through the regulator/generator.

Can a VW Jetta fan run after the engine is shut off?

Definitely hold on to the info. The fan can run after the engine shuts off, but I’ve read about failures where the fan keeps running until the battery is dead. A sticking relay or switch, can jar itself loose while driving. But if it sticks once, it will likely do it again.

Then you notice the engine cooling fan is still running even though the car is turned off. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Your car fan will run for a few minutes after you turn off the car then turn off. This is normal in many vehicles, such as BMW or Mercedes-Benz.

Why does the blower motor keep running after I Turn Off the car?

Why does the blower motor keep running after I turn off the car? If your car uses a blower motor controller, it can keep running the blower motor after you shut down the engine. Those used to be installed only on vehicles with automatic climate control with variable speed fans, but now they’re installed on many late model vehicles.

What happens if you turn off the electric fan on a Jetta?

Electrical Fan continues running after car turned off. Draines battery. Electrical Fan continues running after car turned off. Draines battery. on Volkswagen Jetta Good news! We found 31 RepairPal Certified shops near you.

What should I do if my car runs with a dead battery?

If you get the same voltage on the battery running and not, then you can test the alternator. DVM negative lead on any clean metal ground and touch the positive lead to the post on the back of the alternator (engine running). Use care that you do not touch that post with the probe and the alternator case at the same time. to the battery.

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Ruth Doyle