Skip the auto shop - Our mechanics make house calls

Q: Radio panel light disappearing

asked by on

When I step on my brake pedal, I notice that the radio panel light was disappearing. My battery is good and I have no Check Engine light.

A: Hello, this is a bit of a complex issue. Fi...

Hello, this is a bit of a complex issue. First, if the idle drops when you hit the brakes then there is an issue with the brake booster. When there is a brake booster issue, the booster draws too much vacuum causing the idle to drop. This can make the engine feel like it slows down and is about to die which could explain the lights dimming. A qualified mechanic will be able to diagnose the cause of your radio panel light disappearing. They will check the brake booster and vehicle charging system for faults.

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・Save up to 30%

Get a quote

What others are asking

Q: I'm having starting problems with my vehicle.

Hi there. First off your engine needs three things in order to start. Your engine needs compression, fuel and ignition. The most common problem other owners with similar vehicles to you have is a fuel pump and filter in the...

Q: Is it possible to replace the standard Dimension Stereo in a Non Nav Limited with the Navigation system?

Your best bet is to check a website like Crutchfield.com. They have the best information on what systems will fit your car. Attempting to fit an OE Hyundai navigation/radio unit will probably cost a lot more than you think. Also,...

Q: Why does a car battery stay full and ready even when the car is not in use and the ignition switch is off?

A battery uses basically lead and lead acid to cause a chemical reaction that produces the required voltage that a vehicle uses to run the vehicle electrical systems. The amount of material put into the battery when it was made...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...