WiFi and Model 3

  • SUPPORT THE SITE AND ENJOY A PREMIUM EXPERIENCE!
    Welcome to Tesla Owners Online, four years young! For a low subscription fee, you will receive access to an ad-free version of TOO. We now offer yearly memberships! You can subscribe via this direct link:
    https://teslaownersonline.com/account/upgrades

    SUBSCRIBE TO OUR YOUTUBE CHANNEL!
    Did you know we have a YouTube channel that's all about Tesla? Lots of Tesla information, fun, vlogs, product reviews, and a weekly Tesla Owners Online Podcast as well!

Joined
Mar 7, 2020
Messages
12
Location
Florida
Country
Country
Tesla Owner
Reservation
#1
This was discussed two years ago but the conclusions seemed mixed so....... I have wifi at home allowing me to log into 2G or 5G. I have my computers and phone on 5G but it seems like my Model 3 only does 2G no matter how I try to convince it 5G is better. I also have solar inverters that can only use 2G. I was wondering if this is hardwired into the model 3 or if we can someday look forward to an update.
 

Ed Woodrick

Top-Contributor
Joined
May 25, 2018
Messages
865
Location
Atlanta, GA
Country
Country
Tesla Owner
Model 3
#2
2GHz and 5GHz are the frequencies that the WiFi uses. There are lots of devices that don't use 5G, although the number is getting smaller. Not sure what the car is using.
 

garsh

Dis Member
Moderator
TOO Supporting Member
Joined
Apr 4, 2016
Messages
13,311
Location
Pittsburgh PA
Country
Country
Tesla Owner
Model 3
#3
2.4GHz has a longer wavelength. Because of that, it has an easier time of reaching longer distances and going through walls. That could be the reason why you see this behavior.

https://www.minim.co/blog/wifi-frequency-bands-2.4-ghz-and-5-ghz

According to this article, Tesla didn't start producing cars that support 5GHz until February 2018. So if you took delivery of your car in early 2018, it may not support 5GHz.
 
Joined
Mar 20, 2017
Messages
82
Location
Boisbriand, Quebec
Country
Country
Tesla Owner
Model 3
#4

JasonF

Top-Contributor
Joined
Oct 26, 2018
Messages
1,584
Location
Orlando FL
Country
Country
Tesla Owner
Model 3
#5
Ah, the black arts of radio frequency...

If the Tesla is too far from the 5 ghz base station, it won't pick up the signal at all, especially because it has kind of a short-range antenna.

But even if it can receive both 5 ghz and 2.4 ghz, the receiver in the car will automatically select the signal with the best signal-to-noise ratio. That means the 5 ghz signal could be stronger, but if it's in a place where it's getting interference from the neighbors, or from electronic equipment, or a transmitter close to your house, the car's wifi will pick 2.4 ghz instead.