Car interferes with Garage Door Opener?

[DBMaster]

I did a little Googling and learned that many people have had the same GDO issues with Verizon Fios ONT's installed in the garage. One of the things that helps is connecting the indoor Verizon box to an outlet not on the same circuit as the GDO. That would not be possible in my garage as all outlets are on one circuit. Funny how Verizon insisted that their equipment had nothing to do with it yet that made changes to their installation procedures related to it. I was an early adopter of Fios in my area.

The problem started while I still had my 89 Honda so in my case TPMS had nothing to do with it.

 

[TFB1]

Originally Posted By: meep
300-400mhz. high frequency for vehicle interference.

here's a shot in the dark.... add good ground straps with good solid connections to the hood on both sides, to vehicle body, then add supplemental ground from one of those points to the engine, as well as the battery. If you want to go further, tie in the alternator frame, and add smaller ground to the ECU mount if it's not inconvenient.

tying all these grounds essentially helps the hood shield more RF.

I had ground issues in a 01 minivan, and while trying to solve headlight flickers, the transmission ended up improving its shifting 2-fold....

M



I can agree with this, though I'd want to try another remote first(the one you're using could be slightly off frequency)..

BTW all modern(in the last 30 yr or so)GDO operate at 390Mhz... Basically it's a std freq for all brands, the universal/Homelinks just learn the pulse train but still transmit at 390Mhz...

I've seen "Dead Areas" where no opener would work... Years back we had issues with operation in the area of local TV transmitters... Problem was Ch 10(operates at 195 Mhz) emitted a harmonic that totally obliterated 390Mhz, switching to special receiver and transmitter at 315Mhz solved the problem(that's in the freq range car remotes use these days)...

 

[zzyzzx]

Have you tried relocating the tires in the house to someplace else, or maybe wrapping them in tin foil?

 

[Auroran]

Originally Posted By: Auroran
I have this same problem with my 2014 Subaru Forester and a 1997 Craftsman garage door opener.

My own problem turned out not to be the TPMS, but rather an LED light bulb I installed in the garage door opener. Internet reports indicate that these new bulbs can emit a large amount of radio noise that can interfere with all sorts of wireless devices.

I replaced the LED light bulb with an old incandescent bulb, and my problem went away.

You may ask, Why was I so foolish as to install a newfangled LED light bulb in my garage door opener? Because I was trying to save money on electricity; and because no commonly sold CFL bulb will fit into my garage door opener's bulb receptacle, which is very restrictively shaped.

I guess I'll have a major problem in 2020, when the United States phases out incandescent bulbs.

 

[DBMaster]

CFL's are not ideal for GDO's because they stay on for less than five minutes. CFL's lives are shortened significantly - maybe even to that of a regular bulb - when fast cycled like that.

My GDO control has a switch to manually turn the light on and off. When I enter the house I turn off the lights rather than letting them stay on for that extra four minutes. The probably doesn't save much power, but it makes me feel better. I put 130V bulbs in my GDO. They have thicker filaments than 120V bulbs and outlast even the special GDO bulbs. I had one burn out recently - after TEN YEARS.

You'll still be able to buy incandescent bulbs in "decorative" styles so you can always use flame tip bulbs. Your opener won't care. I get 130V bulbs from a lighting store. They were still only about 50 cents each.