Q: Air conditioner not working after a battery change

asked by on

Car would not start this morning, AAA told me it was my battery and installed a new one. I did not witness it, so I am unsure if anything else may have been disconnected. Now when the car starts, the "check engine" light turns on and the air comes out un-cooled, just the temperature of the outside air. When put to hot, the air does heat. What could be wrong?

My car has 83300 miles.
My car has an automatic transmission.

Hello. Thank you for writing in. At first, disconnect the battery and verify that all of the wires in the starting system and charging system are clean, dry, and tight. Make sure the battery cables are corrosion free, and have a clean and tight ground connection. Once the battery and its immediate circuits are verified, double check that no A/C wiring was interfered with during the original installation process. Its possible something was pumped or snagged. It also sounds like the A/C system may have lost some pressure. If the refrigerant has been depressurized somehow, the climate control will not blow cold air. Double check your battery and make sure it is perfect, before you turn to the A/C system.

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. Air conditioner not working after a battery change

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: My code reader says I have a bad mass air flow sensor ans crank shat sensor test drive ran better shut off & engine Lt. Same code

Hi there. The problem you are describing, sounds like you may have a poor connection in the connector at the mass airflow sensor. Although, sometimes aftermarket parts do not perform as well as factory (OEM) parts. Check for corrosion and/or...

Q: Electrical Issues - 1999 Toyota RAV4

Hey there. It is very possible that the negative terminal end on your battery cables could be damaged. I would recommend loosening it up and removing it for further inspection. If the terminal is broken in any way it will...

Q: largest motor for 2008 chevy cobalt

The hardware and software of the computer (powertrain control module) and transmission control module (TCM) in the Cobalt will only work with your present engine. If you change the engine to one that is not a catalog interchange for 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...
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...