2006 Mercedes CL-Class Owner's Manual - Page 377

Practical hints Replacing SmartKey batteries If the batteries in the SmartKey or the SmartKey with KEYLESS-GO* are discharged, the vehicle can no longer be locked or unlocked. It is recommended to have the batteries replaced at an authorized Mercedes-Benz Center. Warning! i When inserting the batteries, make sure they are clean and free of lint. i The required replacement batteries are available at any authorized Mercedes-Benz Center. SmartKey Replacement batteries: Lithium, type CR 2025 or equivalent. 1 Mechanical key 2 Slide 3 Battery compartment Insert mechanical key 1 in the direction of arrow in side opening. Using mechanical key 1, push gray slide 2 to unlatch battery compartment 3. Pull battery compartment 3 out of the housing in the direction of arrow. G Batteries contain poisonous and corrosive substances. Therefore keep the batteries out of reach of children. If a battery is swallowed, seek medical help immediately. i 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. When changing batteries, always replace both batteries. Remove the mechanical key out of the SmartKey ( page 372). 376