Mercedes-Benz 2007 E 320 BLUETEC Operator's Manual page 269

Controls in detail
Driving systems
The button is located in the lower section
of the center console.
1 Vehicle level control button
2 Indicator lamp
Start the engine ( page 52).
Briefly press button 1 to change from
normal level to raised level. When vehi-
cle is at raised level, pressing the but-
ton will return the vehicle to normal
level.
When raised level is set, indicator
lamp 2 on the button comes on.
When normal level is set, indicator
lamp 2 on the button goes out.
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At a speed of approximately above 75 mph
(120 km/h) or if the speed amounts to between
50 mph (80 km/h) and 75 mph (120 km/h) for
approximately 5 minutes, the setting raised is
canceled. The indicator lamp 2 on the button
goes out.
If you do not drive in this speed range, the raised
level remains stored even if the SmartKey is re-
moved from the starter switch.