Skip the auto shop - Our mechanics make house calls

Q: Brake light and battery light flashing after replacing HID's, alternator and battery

asked by on

A few weeks ago, I installed new HID's in my car. Several days after doing that, the brake light and battery light started flashing. So, I got my alternator and battery replaced. Then shortly after that, the brake light and battery light started flashing again. What else could this be from?

A: It sounds like it may just be happenstance ...

It sounds like it may just be happenstance that the HID light bulbs were replaced and then the other problems started. The battery light is set to come on when the vehicle detects the alternator output is below 12 volts. When the battery voltage drops too low, it can cause the ABS system to become disabled. A relay that is a bad or a faulty battery cable can also cause these symptoms. A qualified technician, like the ones at YourMechanic, will be able to diagnose your brake light and battery light issues and perform any repairs required.

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: My car is having problems shifting into reverse

Manual transmissions use a reverse lockout to prevent the car from going into reverse when the car is moving forwards. Sometimes these lockouts can fail and cause the symptoms you have described. Other possible causes are the reverse synchros inside...

Q: Trunk won't open with either key or trunk lever.

You will need to call a vehicle locksmith to check lock and get into the vehicle trunk for you. If the lock is seized then the lock may need to be drilled out and replaced. The latch may be damaged...

Q: Every time i let go of the gas there is a squeaky sound coming from the front of the car like where the two front tires are?

When throttle is applied, power is transferred to the front wheels and the resulting torque adds pressure to the suspension system. The squeak can be coming from a suspension component at the front of the vehicle or the pedal itself....

Related articles

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...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...