Recently, we heard from a Lasfit customer who shared their experience after installing some aftermarket lights:


"I put a pair of your switchback fog lights in my 2020 Honda Civic. I got them as a gift. After installing them, my remote start from my key fob stopped working. Is this a known issue? If so, is there a workaround?"



While this isn't a common issue—typically, lights shouldn't interfere with your vehicle's other systems—it did happen!



Have you ever had your key fob remote act up after installing aftermarket LED bulbs? How did you fix it? Share your story below!

 

I can't say about a key fob, but I can confirm that my daughter's garage door opener will not work if LED bulbs are installed into the opener. It will open, but then not respond to the remote to close, because the bulb stays on for several minutes and interferes with the radio in the owner. I unscrewed the bulbs, and everything worked. I then went and found some old style halogen/incadescent bulbs for her, and avoided buying a new garage door opener.

As an electrical design engineer, most LED "bulbs" I've seen have circuitry that may involve a switching power supply or other elements (PWM brightness control for example) on the circuit board, and can introduce RF noise that interferes with nearby radio reception. The trick for the designer is to layout their PCB with well shielded circuitry so that the LED fixture does not cause interference.

Interference is only a possibility if the bulbs are on, so in this case, unless those fog lights were turned on, I can't see them causing an issue.