I have a 2017 MS. I am working on it myself. I have a PTC Heater problem. It will not communicate with the CAN. I purchased the subscription to toolbox from tesla, but they are not helpful at all. I have the network cable and have connected it to the jack under the MCU. I have changed the ip address as listed in the knowledgebase from tesla. The program will not connect to my car through that cable. I have a cable ordered up that hopefully will connect to the can jack-db9-peak can tool-usb laptop. Is this the way it is supposed to connect? The knowledgebase also said something about the network connection under the mcu needed to be unlocked remotely.
As for the PTC Heater, I replaced the heater with another one and it has the same error. I am not great at diagnostics, which is why I am trying to use toolbox. What could cause the error on the heater? It is starting to get cold out and I would love to use more than just the seat heaters to get warm. I have called tesla who referred me to my service center. They said they do not provide any tech support. As most things with Tesla, if they don't do it, they don't want to see or hear from you. I love my car, but really wish Tesla treated me like BMW does. At least when they screw you, they kiss you and thank you while doing it.
As for the PTC Heater, I replaced the heater with another one and it has the same error. I am not great at diagnostics, which is why I am trying to use toolbox. What could cause the error on the heater? It is starting to get cold out and I would love to use more than just the seat heaters to get warm. I have called tesla who referred me to my service center. They said they do not provide any tech support. As most things with Tesla, if they don't do it, they don't want to see or hear from you. I love my car, but really wish Tesla treated me like BMW does. At least when they screw you, they kiss you and thank you while doing it.