Transfer case
This section is only valid for vehicles with 4- wheel drive (4MATIC). Power is always transmitted to both axles.
Performance tests may only be carried out on a 2-axle dynamometer. The brake system or transfer case could otherwise be damaged. Contact a qualified specialist workshop for a performance test.
Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose.
To prevent ESP® from intervening, the ignition must be switched off (SmartKey or the Start/Stop button in position 0 or 1) if:
 - the parking brake is being tested on a 
brake dynamometer.
 
 - the vehicle is being towed with only one 
axle raised (not permitted for vehicles 
with 4MATIC).
The brake system could otherwise be damaged.
See also:
Important safety notes
   WARNING  
It is dangerous to shift the automatic
transmission out of parking position P or
neutral position N if the engine speed is
higher than idle speed. If your foot is not firmly
o ...
   
General notes
   Cruise control maintains a constant road 
speed for you. It brakes automatically in order 
to avoid exceeding the set speed. On long and 
steep downhill gradients, especially if the 
vehicle is la ...
   
Resetting to factory settings
   For safety reasons, the Daytime Running 
Lights: function in the Lights submenu is 
only reset when the vehicle is stationary.
– Press the  or
 button on the 
steering wheel to select the Setting ...
   
