I've spent the last 2.5 months in wifi hell with my SP90D. One day, my car just stopped connecting with my wifi network at home. I had been on the same network for 4 months with no problems. No setting changes, no firmware updates. Just stopped connecting. Went through every trouble shooting option I could find on the web with no luck. Was originally on an Orbi set up, so then tried a Nighthawk, then a Linksys router from 4 years ago. Tried WPA and even no security. 2.4 band only, short ssid, legacy protection, multiple car resets in all their variations, forgetting networks, manual set up....every last thing I could find to do. Talked to Tesla support multiple times. I found that I could still connect to Tesla Service, Tesla Guest and my phone as a hotspot, but no other router in any other place. I would get one second of connection, one minute of no connection, then another attempt by the car to connect and obtain an IP address (yes, I tried static IP). Many times even refused to even see other wifi networks where many existed. What fixed it? I went and found the oldest router available (an old Asus N150), used all of the shittiest settings you could have on a router (set as an AP of course), set up 7 feet from my car....and finally....a connection. It is ridiculous that my 2016 car can only connect on a standard from 2009 using the slowest and least secure settings on a router with limited range. Really, I'm just venting. Other than my car swerving sharply towards a concrete divider for no reason and then almost hitting a car next to me, all within 5 minutes, on autopilot today, everything is great!
