The rear heater is another unacceptable design flaw in the MX. the manual and Tesla service say "rear heater doesn't work if no passenger in back seat" but that is wrong. if the rear heat is set to manual, it should produce hot air from the vents on the rear door pillar.
Mine did not and I had it in for service. they "fixed" some control that their computer told them wasn't working and for a few weeks I got hot air IF SET TO HIGH. now it only blows cold air again.
is there a fix?
does anyone know how long it should take for the rear heater (if working at all) to blow warm air. I would assume the heat comes from the same battery as the front heat, so it should be rather instant.
