Mercedes Benz Key Fob Battery Replacement / Change - DIY

Battery you need - amzn.to/2lfmAsR
Mercedes-Benz’s newest fob was introduced with the latest generation E-Class sedan (speaking of pretty) but will soon come with other models. According to the PR materials, the design “echoes the clean lines of the brand’s vehicles”. Which begs the question, what about wheels?
Changing the batteries in your Mercedes key for A, B, C, CL, CLA, E, GL, GLA, GLK, S, SL, SLK, CLK, ML, Vito, Class Klasse. Changing is simple if you know how, this video shows how to replace the batteries in a key for a Mercedes Benz.