I have one strange fault in my network setup that prevents my 2013 Model S in connecting to a wireless network at home when a wireless access point is connected trough a switch on a port that is configured with VLAN. The Model S just got a new MCU1 unit. I have waited a long time for the LTE retrofit and "lucky me", when retrofitting they broke something on the 6 year old MCU having them to install a new one... Problem still persist after upgrade. My Model X with MCU2 connects just fine, just as every other piece of equipment that is capable of WiFi connection. I have a Ubiquiti EdgeRouter 4 set up with different VLAN's for different purposes and basic firewall to prevent some communications between VLAN’s on some of the VLAN’s. A Ubiquiti EdgeSwitch 24-Port 250w connected to EdgeRouter via the SFP/ eth3 Port. I also tried a Netgear Switch connected to the eth1 Port. When the wireless access point is connected directly to eth1 Port or via Netgear Switch on a port with no VLAN configured/standard 192.168.1.1/24 the car connects fine. As soon as the access point is connected to another port with a different VLAN configured the car will not connect. Same problem applies when I connect the access point to the EdgeSwitch. Eth3 Port is as standard configured with VLAN 192.168.3.1/24 but I do not have any firewall rules or can find anything that differs from the 192.168.1.1/24 yet the problem persists when an access point is connected via the 192.168.3.1/24 VLAN. I have tried multiple ports on different VLAN’s with a Netgear wireless router (in switch mode) where my mac connects fine but my Tesla does not. My installed system consists of a Ubiquiti AP AC Lite and a Pro with different SSID on VLAN’s 3, 20 & 30 but no luck getting my Model S to connect to that. I have also tried some older wireless routers but since the car connects fine when the address is 192.168.1.x I suspect my VLAN configuration. The car finds the networks, I can input password, and the network is stored, but the car does not connect at all. Anyone experienced something similar? I have googled whatever question I can think of and read a lot of threads regarding WiFi connection but none applies to my problem.