Mercedes-Benz GL-Class: SmartKey battery
Important safety notes
It is advisable to have batteries replaced at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center.
WARNING 
Batteries contain toxic and caustic
substances. For this reason, keep batteries
out of the reach of children.
If a battery has been swallowed, seek medical
help immediately.
WARNING
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Observe
government disposal guidelines. California
residents, see www.dtsc.ca.gov/HazardousWaste/Perchlorate/index.cfm.
Checking the battery
► Press the
button.
The SmartKey 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 SmartKey battery is discharged.
► Changing the battery
The battery can be obtained from any
authorized Mercedes-Benz Center.
If the SmartKey battery is checked within
the signal reception range of the vehicle,
pressing the button locks or
unlocks the vehicle.
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.
Mechanical key
General notes
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 ...
See also:
Problems with the windshield wipers
The windshield wipers are obstructed
Leaves or snow, for example, may be
obstructing the windshield wiper movement.
The wiper motor has been deactivated.
► For safety reasons, you should ...
Uniform tire quality grading
Quality grades can be found where applicable on the tire sidewall between the
tread shoulder and maximum section width. For example:
Treadwear 200 Traction AA Temperature A.
In addition to the mar ...
Removing the Flat Tire and Installing the Spare Tire
1. Do a safety check before proceeding. See If a Tire Goes Flat
for more information.
2. To remove the center cap, place the chiseled end of the wheel wrench in the
slot on the wheel an ...
