Mercedes-Benz E-Class: Changing the battery
You require a CR 2025 3 V cell battery.
•► Take the mechanical key out of the SmartKey
•► Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery tray cover 1 opens.
When doing so, do not hold cover 1 shut.
•► Remove battery tray cover 1.
•► Repeatedly tap the SmartKey against your palm until battery 3 falls out.
•► Insert the new battery with the positive terminal facing upwards. Use a lint-free cloth to do so.
•► Make sure that the surface of the battery is free from lint, grease and all other forms of contamination.
•► Insert the front tabs of battery tray cover 1 and then press to close it.
•► Insert the mechanical key into the SmartKey.
•► Check the function of all SmartKey buttons on the vehicle.
Checking the battery
•► Press the or
button.
The battery is working properly if battery
check lamp 1 lights up briefly
If battery check lamp 1 does not light up
briefly during the test, the battery is ...
Problems with the SmartKey
Problem
Possible causes/consequences and Solutions
You cannot lock or
unlock the vehicle
using the SmartKey.
The SmartKey battery is discharged or nearly discharged ...
See also:
Heated mirrors (if so equipped)
Some outside mirrors can be heated to defrost,
defog, or de-ice for improved visibility. For additional
information, see “Rear window and outside
mirror defroster switch” in the “Instruments ...
Buttons on the remote
Lock – Press the Lock
button on the remote once to lock all doors and the trunk. The turn signals will
flash once to confirm locking.
Unlock – Press the Unlock button on the remote once to ...
Last destinations
At a glance
The destinations previously entered are stored
automatically.
The destinations can be called up and used as a
destination for destination guidance.
Calling up the last destination
...
