Q: Coolant fan runs continuously? What can it be?

asked by on

Soon as I cut off the car, the fan comes back on running until the battery drains.

My car has 133461 miles.
My car has an automatic transmission.

Hello. Most of the time on this vehicle the issue is caused by a failure in the fan control module. It typically has an internal short that causes this. I usually test the circuit to make sure that the computer is not commanding it on. If not, then I replace the module as that is the most common failure. If you want to have this fan problem looked at, consider YourMechanic, as a certified technician can come to your home or office to diagnose the AC system and repair this problem.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Coolant fan runs continuously? What can it be?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 01 Audi A6 2.7 have a crank but no start I checked my fuses and I have no power to either of my 2 ECU fuses or my Fuel Pump fuse

Hi there. It is highly probable that you have a faulty main relay or an exposed electrical connection or bad ground to the fuse panel that is causing this issue. However, it could also be problem with the ECU itself;...

Q: How do you use Dual Zone Automatic Climate Control with the in-dash navigation system?

If you have a built-in navigation system and your car also has Dual Zone Automatic Climate Control, you’ll find that operating the system is a little bit different from either the manual climate control or the non-navigation based Dual Zone...

Q: When I turn sharp left and accelerate from a stop there is a grind at a certain point in the turn.

I suspect that you have a bad wheel bearing in the right front hub and when pressure is put on it in turns the bearing is grinding or the brake rotor is rubbing the caliper bracket. Have the brakes and...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.