Need a replacement MERCEDES BENZ key fob? Replacement remotes offered at discount prices. Most Mercedes cars come equipped with standard keyless entry system. Replacement car transmitters are very expensive at your local dealership, but we sell them dirt cheap, up to 70% OFF. Purchase keyless key fobs from our website and save. Mercedes-Benz car transmitters usually have to be programmed by a dealer but you still save a bunch on the price of the unit.