2004 Mercedes CL-Class Owner's Manual - Page 335

Practical hints Unlocking/locking in an emergency SmartKey with KEYLESS-GO* Replacement battery: Lithium, type CR 2025 or equivalent. Remove mechanical key ( page 331). Insert the mechanical key in side opening and push gray slide. The battery compartment is unlatched. Pull the battery compartment out of the SmartKey housing. 1 Battery 2 Tilt battery up 3 Mechanical key Using mechanical key 3, apply pressure to position 2. Battery 1 tilts up slightly. Pull out battery 1 in direction of arrow. Using a lint-free cloth, insert new battery with the plus (+) side facing up. Return battery compartment into housing until it locks into place. 1 Release knob Open the trunk. Remove the battery cover and the trim inside the trunk on the right-hand side. Pull release knob 1 in the direction of arrow. The fuel filler flap can be opened. Fuel filler flap In case the central locking system does not release the fuel filler flap, you can it manually. i The required replacement battery is available at any authorized Mercedes-Benz Center. 334