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Practical hints
Unlocking/locking in an emergency
Changing batteries
If the batteries in the SmartKey or the
KEYLESS-GO* card are discharged, the ve-
hicle can no longer be locked or unlocked.
It is recommended to have the batteries re-
placed at an authorized Mercedes-Benz
Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
SmartKey
1 Mechanical key
2 Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
̈ Remove mechanical key 1.
̈ Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
̈ Pull the battery compartment out of the
SmartKey housing in direction of ar-
row.
̈ Remove the batteries.
Warning! G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any authorized
Mercedes-Benz Center.