Activating/deactivating PRE-SAFE® Brake
PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS.
Press the
or
button on the
steering wheel to select the DriveAssist
menu.
Press
or
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:
Checking tire pressure manually
To determine and set the correct tire pressure, proceed as follows:
Remove the valve cap of the tire that is to be checked.
Press the tire pressure gauge securely onto the valve.
Read the tire ...
System self-test
After you have switched on the ignition, the system carries out a self-diagnosis.
WARNING
A malfunction in the system has been detected if one of the following conditions
occurs:
the indi ...
Traction
Traction is the result of friction between the
tires and the road surface. ...