Parking the vehicle for a long period
If you leave the vehicle parked for longer than four weeks, the battery may be damaged by exhaustive discharge.
 Connect a trickle charger.
 Connect a trickle charger.
 You can obtain information about trickle 
chargers from a qualified specialist 
workshop, e.g. an authorized Mercedes-Benz Center.
 You can obtain information about trickle 
chargers from a qualified specialist 
workshop, e.g. an authorized Mercedes-Benz Center.
If you leave the vehicle parked for longer than six weeks, the vehicle may suffer damage as a result of lack of use.
 Visit a qualified specialist workshop and 
seek advice.
 Visit a qualified specialist workshop and 
seek advice.
See also:
Trailer load/noseweight
   The trailer load/noseweight affects the gross
weight of the vehicle. If a trailer is attached,
the trailer load/noseweight is included in the
load along with occupants and luggage. The
trailer loa ...
   
Locking the vehicle (mechanical key)
   If the vehicle can no longer be locked with the SmartKey, use the mechanical 
key.
	Open the driver's door.
	Close the front-passenger door, the rear doors and the tailgate.
	Press the locki ...
   
General notes
   If you cannot lock or unlock the vehicle with 
the SmartKey, either the battery in the 
SmartKey is discharged, the SmartKey is 
faulty or the starter battery is discharged.
 Check the battery in  ...
   
