Rear heated seats

[Bmwe5320023.0]

Thanks guys, I've been staring at this chart for a while but not knowing how to read the diagrams fully I can't quite figure it out.

I'm not sure about these symbols



One of them might be a thermostat responsible for turning off the heat when it gets too hot?

My goal is to make the seats activate when the car is started with a remote.

So I understand the switch has 5 pins.

Pin 1 heats the backrest
Pin 2 heats the back seat
Both activate when key is in 2nd position
Pin 3 is ground
Pin 5 is another power from the relay

Do pins 1 and 2 get their power from K93 relay as well?

Pin 4 goes to the light control module Pin 1, which is
1 A Signal line, night lights Connector terminal 58

Am I correct to assume that the light module simply lights up the botton?

My best guess how this works is that pins 1 and 2 get power from pin 5, when the button is pressed, and if the key is in position 2.

Please correct me if I'm wrong about any of the above.