Q: Q: Headlights and dash lights flicker

asked by on

Hi. When I turn the car on, there is flickering of headlights and lights on the dashboard. I had the alternator replaced when I went to a shop to check the electrical system. The issue still persists inspite of this. What should I do? Thanks.

It is possible that your voltage regulator is going bad. Normally, this is integrated into the alternator but some vehicles have it separate. If the voltage regulator has failed, the amount of power that all your vehicles accessories will receive will be inconsistent. I would recommend having your voltage regulator located and tested for proper function. Since this is related to the electrical system of the vehicle, ensure this service gets performed by a qualified professional, such as one from YourMechanic. They will be able to inspect your electrical system and replace your voltage regulator if necessary.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Headlights and dash lights flicker

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: I want to upgrade my headlights.

If this is a serious consideration of yours I would look in your owners manual or contact your local dealership first for any information regarding the headlights that you can get. Some vehicles do not accept aftermarket modifications as well...

Q: Air conditioning blowing warm air suddenly.

Hello, thank you for writing in. An air conditioner that is blowing warm is typically an issue with low refrigerant pressure. This can be due to a sudden leak, or it can be due to a failed A/C compressor. The...

Q: Roaring from front passenger side tire

Hey there. The front wheel bearing on this vehicle is a pressed in type bearing. The hub will need to be pressed out of the old bearing in order to press out the hub wheel bearing and press in the...

Related articles

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...
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...
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...