Skip the auto shop - Our mechanics make house calls

Q: Radio and Lights randomly go on and off when I apply brakes

asked by on

I have a very strange problem. When I slow down by applying my brake pedal, my lights and radio go on and off, on and off, etc. Anytime I put on the brakes, this happens. What is causing the bizarre problem?

This is strange. I have not run into this problem before. I would think that the problem revolves around the system having a possible grounding issue or the ECU control system is having a ground issue feedback.

Have the system checked and scanned to see if they share a common ground. You should also look under the dash, by the brake pedal, to see if the wiring is being rubbed and shorting out. If you need help with this, contact a professional mechanic who can diagnose your electrical issue and repair it accordingly.

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: Sunroof has stopped working

The system is powered by the #8, 10 amp fuse located under the dash on the left side of the fuse box. This fuse powers the power window relay in the same box, then a circuit breaker powers through the...

Q: How much does it cost to replace a sunroof motor on a 1997 Toyota 4Runner

Hi there - unfortunately, this is not a service YourMechanic offers at this time. Thanks for thinking of us though!

Q: Brake pedal to floor; two car lengths to stop car

Hello. This diagnosis sounds correct. There is clearly a failed brake hydraulic component and safety issue. Consult your Owners Manual to determine if your vehicle is still under warranty. If so, the vehicle should be towed to the dealer. If...

Related articles

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...
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...
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...