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:
Checking the engine oil
The oil level should be checked at regular intervals, particularly during the
period up to the first scheduled maintenance service.
See page 339 for oil specifications.
Refer to the Warranty a ...
Manual transaxle
Manual transaxle operation
The manual transaxle has 5 forward gears.
This shift pattern is imprinted on the shift knob. The transaxle is fully synchronized
in all forward gears so shifting to ei ...
Tire size
Your vehicle comes equipped with P-Metric tire size. It is important to understand
the sizing system in selecting the proper tire for your vehicles. Here is a brief
review of the tire sizing syste ...
