I have never done Tesla's periodic maintenance. Low cost of maintenance was one of the many selling points back when I purchased.
I make sure the brakes are free when I change wheels seasonally; sometimes I take the calipers off the hub and clean the pad edges and calipers. Still on original rear service brakes, have replaced fronts due to uneven wear when they did get stuck on the calipers, and parking brake pads when the surfaces fell off the backing.
My last drive unit replacement was at about 80,000 miles, so I guess I'm overdue for new coolant with nearly 140,000 now.
A couple of years ago I got a quote for a coolant flush, $250. This really should be something a DIY person can take care of for far less; but I'm not sure you can do it without their "toolbox."
I'm afraid to bring the car in for anything anymore, they might install V9 software. V8 was enough of a downgrade for me.
IMO the cost of maintenance is outrageous for what you get. Besides, I hear their service is swamped.