Need expert Mercedes car key replacement in Melbourne? Car Keys Express Locksmith provides professional on-site solutions for all Mercedes-Benz models, including the C-Class, E-Class, S-Class, A-Class, GLE, and Sprinter vans. Mercedes vehicles use some of the most advanced immobiliser and key systems in the automotive industry. Earlier models may rely on infrared remote keys combined with mechanical blades, while newer vehicles use smart proximity keys paired with the EIS (Electronic Ignition Switch) and ESL (Electronic Steering Lock) modules. These systems require highly specialised diagnostic tools and programming knowledge. Our locksmiths are equipped to cut blades where needed, program transponder chips, and pair replacement smart keys to your Mercedes — all carried out on-site to save you time and avoid costly dealership waits.