Skip the auto shop - Our mechanics make house calls

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?

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: Locate power window fuse

Hi there. Thanks for writing in to YourMechanic.com. Although I understand your frustration about the cost of replacing an electrical relay, I can't recommend removing the single fuse to attempt to resolve this problem for two reasons. First, the fuse...

Q: I have a 2011 town n country. I was told by the service dept. that the left side cylinder head needed replacement which

As long as the cost of replacing the spark plugs on the right side is equal to half of the cost of doing it on the total engine I think it will be ok. Considering that the cylinder head is...

Q: T-belt light for 2016 hiace manual transmission

Hi there. Turn ignition switch off. Press and hold the odometer display button while turning ignition on. Hold button down for 5 seconds then release button. This will reset the reminder light for the timing belt change. If you need...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.