Under normal use, the accessory key fob has a battery that lasts for up to one year, depending on key fob version and selected vehicle settings. When the battery is low, a message displays on the touchscreen. To replace the key fob battery: With the key fob placed button side down on...
Connect the vent tube hose into the negative (-) terminal side of the low voltage lead-acid battery. Open one of the vehicle’s doors to make sure power has been correctly restored and the touchscreen turns on (this may take several minutes). ...
Westport approached this project in conjunction with Tesla, the legitimate way, trying to avoid the need to add additional 12V batteries it a car that already has a giant 7.5 kW battery pack. I can see that trying to handle the limitations of the Model 3'ssmall 12 volt batterytucked under...