About this item BUNDLE OF 2 PACK CR2032 BATTERY – with remote opening/pry tool. Original OEM Battery as provided by Mercedes in all 2017 smart key remote fobs (as pictured). COMPATIBILITY NOTE – Works with 2017 original equipment MB smart key remotes including A B C E S G Class GLA GLB GLE GLS CLA CLS EQC AMG, etc. f your remote looks the same as the remotes shown in the product photos but Amazon states that this is not compatible with your remote, this may be because your vehicle has not yet been added to the compatibility list. AVOID A SERVICE APPOINTMENT for a replacement battery. Battery replacement is simple and remote reprogramming is not required after battery replacement. Battery replacement is recommended before or after seeing the “Key Battery Needs Replacing” or “Low Key Fob Battery” message on the car dashboard (if applicable) or if your remote range is reduced and/or works intermittently BONUS: OPENING/PRY TOOL INCLUDED – Pry tool included to assist with opening of remote, and/or removal of battery from battery compartment INSTALLATION VIDEO INCLUDED – We offer an easy-to-follow detailed instructional video demonstrating the battery replacement process