2006 Mercedes SL-Class Owner's Manual - Page 390

Practical hints Replacing SmartKey batteries 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! SmartKey Replacement batteries: Lithium, type CR 2025 or equivalent. Remove mechanical key 1 ( page 385). Pull battery compartment 3 out of the housing in direction of arrow. Remove the batteries in direction of arrow. G Keep the batteries out of reach of children. If a battery is swallowed, seek medical help immediately. 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. 4 Battery 5 Contact spring 1 Mechanical key 2 Slide 3 Battery compartment Insert mechanical key 1 in direction of arrow into side opening. Using mechanical key 1, push gray slide 2 to unlatch battery compartment 3. Using a lint-free cloth, insert new batteries 4 under contact spring 5 with the positive terminal (+) facing up. Return battery compartment 3 into housing until it locks into place. Slide mechanical key 1 back into the SmartKey. Check the operation of the SmartKey. i When inserting batteries, make sure they are clean and free of lint. 389