Mercedes-Benz CL-Class 2008 COMAND Manual - Manual (Page 500)

499
Controls in detail
Automatic climate control
Activating
̈ Switch off the ignition ( ୴ page 365).
̈ Press button T ( ୴ page 491) up or
down.
The indicator lamp on the button
comes on.
Deactivating
̈ Press button T ( ୴ page 491) up or
down.
The indicator lamp on the button goes
out.
i The residual heat is automatically turned off:
ț when the ignition is switched on
ț after approximately 30 minutes
ț if the battery voltage drops
ț if the coolant temperature is too low