Q: Low beam HID's are turning on and off sporadically.

asked by on

I just bought this car a few months ago. I know that it has a new alternator in it, but ever since day one, the dash lights have flickered a bit. A few weeks ago, I noticed my driver's side low beam was out when I parked. HIDs are only on the low beams. When I started my car, it came back on. Over the past few weeks, I have noticed that the low beams work when I initially begin driving, and sometimes you can see my lights get bright, then dim, then bright again and go out. Now, it's the passenger's side out and the driver's side is on. My brights work ok. On two occasions, both low beams went out at the same time, causing me to bright light everyone home.

My car has 162000 miles.
My car has an automatic transmission.

Hello. From what you describe, it would appear that your vehicle may be experiencing some sort electrical issue. Flickering lights can be caused by a wide variety of issues. A few common causes are a faulty alternator, battery, or wiring. You mention that the alternator is new, however, I would still check it to make sure that it is functioning properly, as even a new alternator can fail.

There are also cases where a bad battery can cause flickering. If the connections to the battery are poor or covered in corrosion or one of the cells is bad, it may cause the electrical system to be unstable, which can cause lights to flicker. Flickering lights can also be caused by faulty wiring. It may be possible that there is some sort of wiring issue with the dash and HIDs. If the HIDs are aftermarket, this is more likely, especially if wiring modifications were required to install the lights.

I would carefully check the battery terminals, ground wires, and the wiring to the HIDs, as issues with all of these can cause lights to flicker. If these all check out, then I would recommend having a professional technician, such as one from YourMechanic, visit your location to diagnose the electrical system for possible issues.

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. Low beam HID's are turning on and off sporadically.

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: Q: What can it be if its not the throttle body?

The throttle body is a common failure on Chrysler's, but there is another component that is key to the throttle system on your car. The gas pedal assembly has a sensor very similar to the throttle body and is an...

Q: AC stops working when idling

It is possible that your compressor clutch is producing more drag than usual, causing the near stall at idle. When the engine RPM is raised, the belt rotates faster, forcing the compressor to spin. It is also possible that...

Q: Truck won't start after changing battery

The symptoms you describe lead me to believe your Tundra is having communication problems with one or more of your Toyota’s computers. We know the battery is good and if the starter is turning the engine over, it too is...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
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...