EBD (electronic brake forcedistribution)
Observe the "Important safety notes"
section.
EBD monitors and controls the brake pressure on the rear wheels to improve driving stability while braking.
WARNING 
If EBD has malfunctioned, the braking system
remains available with full brake boosting
effect. However, the rear wheels can still lock,
e.g. under full braking. This could cause you
to lose control of your vehicle and cause an
accident. You should therefore adapt your
driving style to the different handling
characteristics.
► Observe the notes on warning and indicator lamps as well as display messages.
See also:
Problems with Night View Assist Plus
Problem
Possible causes/consequences and
Solutions
The picture quality of Night View Assist
Plus has deteriorated.
The windshield wipers are smearing the windshield.
...
Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from oil, grease, gasoline and diesel. ...
Activating/deactivating the rear view
camera
– To activate: make sure that the SmartKey
is in position 2 in the ignition lock.
– Make sure that the "rear view camera"
function is selected in COMAND (see the
separate operating in ...