Skip the auto shop - Our mechanics make house calls

Q: When turning the temp. selector from cold all the way to hot, does it click?

asked by on

When the temp. selector is all the way left (hot) it just makes a loud clicking sound. Start turning it back to cold it quits. The fan can be off and the air conditioning. switch ca n be off, and it still clicks temp switch is at hot. What could this be and would this be expensive to fix?someone told me it could be a motor

My car has 123000 miles.
My car has an automatic transmission.

A: Hello. The problem sounds like a blend door...

Hello. The problem sounds like a blend door actuator motor. It controls where the fresh air is drawn in from when the switch is moved. There are actually two different areas that can supply the air, depending on whether you want hot or cold. When you move the switch to the middle for warm air, the air is drawn from both sources at the same time, and therefore gives you air that isn’t fully hot or fully cold.

Anyway, when the blend door actuator fails, it doesn’t have the ability to move the door to the correct position. It will see a command to be in one position and keeps trying until it is in the correct position. When it can’t move, it just keeps trying, hence the clicking until you switch it back to the other position. If you would like to verify the problem, a qualified professional from YourMechanic can diagnose the clicking sound and assist with any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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: Roof doesn’t work

Unfortunately this is an issue that has plagued Patriots for years, with apparently no one solution that proved reliable in all cases. However, there are two procedures that have proven effective in a lot of cases: Replace the sunroof seal...

Q: Car stuck in park

First of all, be sure that you are fully depressing the brake pedal. With modern day vehicles, the shifter will not move out of park without the brake pedal depressed as a standard safety feature. If this is not fixing...

Q: A/C Blowing HOT air. 2001 Hyundai Santa Fe

Hello. If there is no pressure in the system, then that means that there is a leak in the system. If there was no refrigerant, then there is going to be air in the system. If that is the case,...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.