SmartKey functions

See also:

Showing the distance display
This function is only available with DISTRONIC PLUS. – Press the or button on the steering wheel to select the DriveAssist menu. – Press the or button to select Distance Display. – Pr ...

Low outside temperatures
DEF freezes at a temperature of approximately 12 °F (–11 °C). The vehicle is equipped with a DEF preheating system when it leaves the factory. Winter operation is therefore also guaranteed at ...

Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigg ...