Dodge 2011 Charger - Owner Manual - Manual (Page 272)

LOAD LEVELING SYSTEM — IF EQUIPPED
The automatic load leveling system will provide a level-
riding vehicle under most passenger and cargo loading
conditions.
A hydraulic pump contained within the shock absorbers
raises the rear of the vehicle to the correct height. It takes
approximately 1 mile (1.6 km) of driving for the leveling
to complete depending on road surface conditions.
If the leveled vehicle is not moved for approximately
15 hours, the leveling system will bleed itself down. The
vehicle must be driven to reset the system.
270 UNDERSTANDING THE FEATURES OF YOUR VEHICLE