https://posteezy.com/step-step....-guide-selecting-rig
How to Program a MERCEDES Truck Key If you require replacement of the battery or your key isn't functioning, our parts department is glad to assist you. Note that replacement keys can only be purchased and synchronized in the showroom. This is to ensure the safety and security of your vehicle. must be requested by you or an individual who is authorized to do so. Keys There are rumors that you can reprogram the Mercedes key, however this isn't the case. The key is programmed "for the duration of its life"