Skip the auto shop - Our mechanics make house calls

Q: AC no longer works correctly

asked by on

My AC will no longer turn on unless you are pressing very hard and continuously on a specific spot near the AC dial.My mechanic said it might be an HVAC problem or something electrical. Before this, the AC would work, but only on Max AC.

A: Sounds like you are having a problem with t...

Sounds like you are having a problem with the a/c control unit. On some vehicles the switches are separate, but on most it is a complete unit and must be replaced as such. The unit can develop internal connection issues causing it not to run the a/c. Problems like these are not typical but they do occur. A certified mechanic will help pinpoint the problem with your a/c. Checking the unit and the wiring is important to make sure the unit is in fact the faulty part.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Air Conditioner Failure

It sounds like you have a system that is or has been getting low on refrigerant for some time now. This can mean the oil in the system that lubricates was also being depleted when it was working but leaking....

Q: Why oil is running from my b 14 steering rack booth rubber 1999 Nissan Sentra

Hi there - your fluid leak from the steering rack area could be caused by either a leaking high pressure power steering hose, or leaking seals in the steering rack itself. I recommend a fluid leak inspection performed by a...

Q: Oil pressure and battery light stay on when ignition is off.

Hello. If this is occurring, then there is a short in the electrical someplace. Most of the time, the issue is in the ignition switch. The switch fails internally and causes some circuits to stay on which will drain the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...