2004 Mercedes CL-Class Owner's Manual - Page 334

Practical hints Unlocking/locking in an emergency 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 Remove mechanical key 1 ( page 331). Insert the mechanical key 1 in side opening and push gray slide. The battery compartment is unlatched. Pull the battery compartment 2 out of the SmartKey housing in direction of arrow. 1 Mechanical key 2 Battery compartment Replacement batteries: Lithium, type CR 2025 or equivalent. Remove the batteries. 3 Battery 4 Contact spring Using a lint-free cloth, insert new batteries 3 under the contact spring 4 with the plus (+) side facing up. Return battery compartment into housing until it locks into place. i When changing batteries, always replace both batteries. The required replacement batteries are available at any authorized Mercedes-Benz Center. 333