Q: Low beams are quite dim, high beams seem OK. Although filaments turn on inversed.

asked by on

I've noticed my headlights are very dim, there is no difference in intensity between DRL and low beams. High beams are bright. After visually inspecting lights and comparing to similar, the end filament at the tip of the build in the what seems to be a little metal cup lights up as bright and the reversed filament which is the high beam turns on when low beams are turned on. I have had a front end collision, rebuilt the front end, bumper, rad support, rad, fan assembly, hood. Entire headlight assembly. Although never changed anything wiring wise, blew the fuse which I replaced. Battery is fine, alternator is fine, had it tested. Would this be a headlight relay that is faulty? Or could the DRL module be the cause of this? Also when I turn the high beams on the fog lights do not turn off anymore. Also fog lights will be active on DRL, used to be only when I tired the low beams on.

My car has 113710 miles.
My car has a manual transmission.

Hi there. Typically, dim lighting is the result of a poor ground in the given lighting circuit. This poor ground may also account for the fog lights not functioning in the low beam position. Circuit testing with a wiring diagram needs to be performed to accurately access the cause of failure. Replacing components without diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle’s dim low beam headlights be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Low beams are quite dim, high beams seem OK. Although filaments turn on inversed.

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 speed sensor went bad twice in 10 days

Hello. The problem you're experiencing with your speedometer may be related to the speed sensor cable that attaches from the sensor on the outside of the transmission to the actual speedometer on the car. About 80 percent of the time...

Q: How to fix squealing power steering

Hello....This could be a dry or worn out ball bearing assembly of which there are quite a few (alternator, A/C, idler pulleys, etc) or it could be a belt alignment, belt age, or belt tension issue. YourMechanic can isolate these...

Q: If I know what’s wrong with my car & I schedule for one of you guys to come out to unhydrolock my engine will y’all do that ?

If the engine has been hydrolocked, this means that water has got inside the engine and has diluted the oil. This means the oil was not able to lubricate the engine properly and therefore the engine itself has locked up....

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...
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...