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?

A: This is strange. I have not run into this p...

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・Save up to 30%

Get a quote

What others are asking

Q: Car loses power when coming to a stop. Radio resets then loses power. Replaced battery and alternator. No code given when this occurs.

Hello and thank you for contacting YourMechanic. Check for any loose ground wires under the dash. There also could be a loose ground wire to the computer causing it to temporary shut down and make everything flicker. Check the ground...

Q: O2 sensors

Oxygen sensors don't work in that voltage range. Oxygen sensors range from .1 to .9 volts. When the vehicle is running normal the sensor ranges between .4 to .6 volts. The O2 voltage should change constantly going above and below...

Q: Does severe braking cause a flat spot on my tires?

The conditions experienced during severe braking can indeed cause flat spots on a tire, but usually only during extreme situations where the conditions are strenuous enough. Flat spots most commonly occur during severe braking situations where the tires lock...

Related articles

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 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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...