Mercedes-Benz G-Class 2015 - Manual (Page 186)

Deactivating/activating PARKTRONIC
: Indicator lamp
; To deactivate/activate PARKTRONIC
If indicator lamp : lights up, PARKTRONIC is
deactivated.
i PARKTRONIC is automatically activated
when you turn the SmartKey to position 2 in
the ignition lock.
Towing a trailer
PARKTRONIC is deactivated for the rear area
when you establish an electrical connection
between your vehicle and a trailer.
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Driving systems
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