Activating/deactivating PRE-SAFE® Brake
PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS.
•► Press the 
button on the
steering wheel to select the DriveAssist
menu.
•► Press 
to select PRE-SAFE
Brake.
•► Press 
.
The current selection is displayed.
•► To activate/deactivate: press
again.
When PRE-SAFE® Brake is
activated, the multifunction display shows
the 
symbol as long as the HOLD
function is not activated.
Vehicles with Parking Guidance: if
PARKTRONIC is activated and you are driving
at a speed under 22 mph (35 km/h) the
symbol for Parking Guidance is displayed
instead of the 
symbol.
See also:
Change of address or change of
ownership
In the event of a change of address, please
send us the "Change of Address Notice"
found in the Service and Warranty
Information Booklet, or simply call the
Mercedes-Benz Customer As ...
High outside temperatures
If DEF heats up to over 122 °F (50 °C) for
extended periods, e.g. as a result of direct
sunlight on the DEF reservoir, DEF can
decompose. Ammonia vapors develop as a
result.
WARNING
When o ...
Stability pact: the well-proven suspension of the R-Class
The Mercedes-Benz R-Class has a dynamically active and comfortable suspension
with high safety reserves as standard. All model variants have steel springs,
and in the 5+2-seater variants and the t ...