The electric parking brake is also applied in selector-lever position D or M.
The light indicator on button and the brake warning light light up.
Please see chapter "Warning and Information Messages" on page 327.
Exceptions for the Auto Start Stop function
The Auto Start Stop function is not available in the following situations, e.g:
When SPORT/SPORT PLUS mode is active
When PSM off or PSM SPORT mode is activated
When air conditioning "Maximum cooling output" is active
When the “Windshield defrost” function is active.
At high altitudes
While adjusting the chassis level
When off-road mode is on
When an attached trailer is detected (bicycle carrier connector or trailer connector plugged in)
The Auto Start Stop function must be deactivated manually if a trailer hitch from another manufacturer is installed on the vehicle.
The Auto Start Stop function is available with limited functionality in the following situations, e.g.:
When the air conditioning or passenger compartment heating is operated at a high setting
If the battery charge condition is low
On upward or downward slopes
During internal vehicle test procedures, e.g. automatic engine checks
At a very low or very high outside or battery temperature
In stop & go traffic with repeated short stopping phases
If one of these states occurs after the engine has been stopped automatically, the engine can be restarted automatically.
Switching Auto Start Stop function and coasting mode on and off
Fig. 32: Auto Start/Stop button
Press button .
The light indicator on the button lights up.
Automatic stopping of the engine is suppressed and coasting mode is switched off.
Press button .
The light indicator on the button goes out.
The engine is automatically stopped when the vehicle stops and coasting mode is switched on.
Please see chapter "Driving in coasting mode" on page 298.