Mercedes-Benz SL-Class Operator's Manual page 380

Practical hints
Locking/unlocking in an emergency
Remove mechanical key ( page 374).
Insert the mechanical key 1 in side
opening and push gray slide.
The battery compartment is unlatched.
Pull battery compartment 2 out of the
SmartKey housing in direction of ar-
row.
Remove the batteries.
3 Battery
4 Contact spring
378
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
SmartKey with KEYLESS-GO*
i
The required replacement batteries are
available at any Mercedes-Benz
Center.
1 Battery
2 Tilt battery up
3 Mechanical key
Replacement batteries: Lithium, type
CR 2025 or equivalent.