2006 Mercedes SL-Class Owner's Manual - Page 391
2006 Mercedes SL-Class Manual
Page 391 highlights
Practical hints Replacing SmartKey batteries SmartKey with KEYLESS-GO* Replacement battery: Lithium, type CR 2025 or equivalent. Using a lint-free cloth, insert the new battery under the contact spring with the plus (+) side facing up. Return the battery compartment into the housing until it locks into place. Slide mechanical key 1 back into the SmartKey, see "SmartKey" ( page 389). 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. Check the operation of the SmartKey with KEYLESS-GO. i When replacing batteries, always replace both batteries. The required replacement batteries are available at any authorized Mercedes-Benz Center. Remove the mechanical key ( page 385). Take the battery compartment out of the SmartKey housing ( page 389). 390