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 Check Engine Light came on. I fixed the issue, but the light quickly came back on. Will it turn itself off?

Just because a code is displayed does not mean that part is bad in all cases. The code is used as a tool to diagnose the problem. You may have to have the code diagnosed by an experienced mechanic like...

Q: Flat towing / locate accessery position of key

In order to tow this vehicle behind an RV you will want to have the vehicle in neutral with the key in the off poition. When the vehicle's transmission is in neutral, the steering wheel is unlocked. This will enable...

Q: car shaking/vibrating when idle

Hello. This sounds like potentially a failing idle air control valve or potentially a misfire. The idle air control valve regulates the air intake into the engine as it is mixed with fuel prior to being injected into the engine....

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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...