This.
Sometimes during my lunch break i'll sit in the car with the heat on but sometimes it'll get so hot i turn it off. Then i shut the car off and go back to work. When i remote start it to go home that same day and i get in the car, the heated seats, steering wheel, and rear defrost are on.
I think it does this via ambient temp sensor? If the ambient temp sensor reads it's cold out, i think by default will turn them on for you on a remote start, even if you had left it off on your last drive.
From page 142 of the owners manual.
REMOTE START (IF EQUIPPED)
The climate control system adjusts the
interior temperature during remote start.
You can switch this feature on or off and
adjust the settings using the touchscreen.
See Settings (page 469).
You cannot adjust the climate control
setting during remote start operation.
Switch the ignition on to make
adjustments.
Based on your remote start settings, the
following vehicle-dependent features may
or may not remain on after remote starting
your vehicle:
• Climate controlled seats.
• Heated steering wheel.
• Heated mirrors.
• Heated rear window.
• Windshield wiper de-icer.
Note: For dual zone climate controlled
seats, the passenger seat setting defaults
to match the driver seat during remote start.
Automatic Settings
If Auto is on, the system sets the interior
temperature to 72°F (22°C) and heats or
cools the vehicle interior as required to
achieve comfort.
Note: In cold weather, the heated rear
window and heated mirrors turn on.
Last Settings
If Last Settings is on, the system uses the
settings last selected before you turned
off the vehicle.
Heated and Cooled Features
In Auto mode, certain heated features may
switch on during cold weather, and cooled
features during hot weather.
142