Skip the auto shop - Our mechanics make house calls

Q: Air conditioning on high caused radio turn off, gas gauge to empty,warning lights on

asked by on

I was sitting in a hot grocery store parking lot and turned the air conditioning on high. The radio went off, the gas gauge went down to empty and some of the warning lights came on! I turned off the AC and the lights turned off. What could be the cause of this?

A: The most likely cause of this is a battery ...

The most likely cause of this is a battery with a failed cell, alternator, battery cable or the AC compressor itself. If the charging system has a fault, it will not be able to support all of the car’s systems, such as the radio and the AC. The AC could also be the cause itself, as it could have caused a drag on the system, which can cause faults as well. A qualified technician, such as one from YourMechanic, will have little trouble performing any diagnose your electrical issues and perform any repairs that are needed.

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: The AWD disable light is on in my 2006 Buick Rendezvous

Some systems require more than a code reader to find a fault. The AWD disable light means that there is a fault with that system. The AWD system controls torque (rotational force) to the four wheels. This is to improve...

Q: How do you adjust the vents?

Adjusting the air vents in your car lets you fix the flow of hot, cold or fresh air where you want it most. It’s also very simple. Here’s how: Front Right and Left: Move the vent slide left or...

Q: Vehicle turns off at any rpm, at idle or highway speeds, without stumbling or warning.

This kind of a stalling issue can be caused by a variety of problems. They are typically caused by ignition faults, wiring faults, and fuel issues. Although you do not have a Check Engine Light on, you should still scan...

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...
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.