LED headlight manufacturers have come a long way in solving the formerly common problem of flickering headlights. However, there are still occasions where users notice that their headlights are flickering.
Why do LED headlights sometimes flicker and how do you solve this problem?
Why Are My LED Headlights Flickering?
A common reason for flickering LED headlights is a failed communication between the computer system of your car and the electrical system of the LED headlights. Another common cause of flickering LED lights is an unsteady AC power supply.
The bad news is, there are many other possible reasons why LED headlights are flickering. Pinpointing what the exact problem is can be time-consuming and you might have to consult a mechanic to be absolutely sure of the cause and how to fix it.
The good news is that the flickering can be resolved in most cases. Often times you only need to add an extra piece to the circuit to keep the LED corresponding properly to the cars electrical system.
If it’s failed communication, it simply has to do with the fact that most cars on the road today are still built with xenon lights or halogen lights. Replacing these headlights for the brighter LED alternatives also means changing how the headlights respond to the car’s computer.
Flickering caused by an inconsistent electricity supply is a common issue with LED lights, not only headlights. The LEDs are not actually flickering but turning on and off at a very rapid rate which to your eyes appears as flickering.
In contrast to other forms of lighting like incandescent lights, LED lights shut off when the voltage falters. Since there is practically no delay in LED lights, LED lights are able to shut off and on at a speed that looks like flickering.
How To Stop LED Headlights from Flickering
Flickering LED headlights used to be quite a common fault when the first models came out on the market. However, manufacturers have focused on resolving this issue since then and have come up with a few solutions.
To prevent problems caused by an unsteady electricity supply to super bright LED headlights, most are fitted with a driver that maintains a steady voltage. The driver compensates for the wiring of the car that cannot deliver a constant current.
If you have installed the driver correctly but the headlights are still flickering then you need to check the connection to the other systems in the car. Check the wiring, relays, and switches for any damage or general wear and tear.
When the cause of the flickering is a failed communication between the headlights and the car computer system then you can purchase warning cancellers or capacitors and anti-flicker adaptors. These are simple pieces of car equipment that basically translates the miscommunication between the car computer system and headlights; the car computer system will no longer read the LED headlights as a fault in the system.
Also, don’t forget to check the bulbs themselves. Sometimes the problem can be so minute as bulbs that are not fitted tightly enough or are at the end of their lifespan.
One example of car equipment that gets rid of flickering in LED headlights is the Rigid Industries PWM anti-flicker adaptor. This small but effective wiring addition is specifically designed for Jeeps that have a PWM system that does not respond well to replacement LED headlights.
This anti-flicker adaptor is simple to install. The only thing that needs to be done is connecting the LED headlight on one end of the adaptor and the stock harness on the other end.
It doesn’t get any easier than this to solve an annoying issue like flickering headlights. Just make sure that you are purchasing the correct adaptor for your headlight model by confirming that the model number matches.
Flickering LED headlights can be caused by a number of things but can also easily be solved. Look online for equipment that will solve the failed communication between the headlights and the computer system to solve the problem once and for all.