Mercedes-Benz GLC : Display messages / Mercedes me connect

Other information:
Function of Active Steering Assist
Active Steering Assist is only available up to a
speed of 130 mph (210 km/h). The system helps
you to stay in the center of the lane by means of
moderate steering interventions. Depending on
the speed driven, Active Steering Assist uses the
vehicles ahead and lane markings as a reference...
You can no longer lock or unlock the vehicle
Possible causes:
The SmartKey battery is weak or discharged.
The SmartKey is faulty.
Check the battery using the indicator lamp.
Replace the SmartKey battery, if necessary.
Use the emergency key to lock or unlock...