2016 Mercedes-Benz Metris Key Fob Programming Guide

Quick Reference

Step-by-Step On-Board Programming

The 2016 Mercedes-Benz Metris does not support DIY on-board key fob programming. This vehicle utilizes a sophisticated security system that requires specialized diagnostic tools connected to the vehicle's onboard computer (OBD-II port) to program new key fobs. This process typically involves coding the new fob to the vehicle's immobilizer system.

Therefore, a visit to a Mercedes-Benz dealership or a qualified automotive locksmith with the necessary equipment is required for key fob programming.

Battery Replacement

1. Locate the small release button or tab on the side or back of your key fob. Press this to release the emergency key blade.
2. With the emergency key blade removed, you should see a small slot or indentation. Insert a thin, flat object (like a small screwdriver or coin) into this slot and gently pry the two halves of the fob apart.
3. Carefully remove the old CR2032 battery. Note the orientation of the positive (+) and negative (-) sides.
4. Insert the new CR2032 battery with the positive (+) side facing up.
5. Align the two halves of the key fob and snap them back together until you hear a click.
6. Reinsert the emergency key blade.

Where to Buy a Replacement Fob

• Mercedes-Benz Dealership: This is often the most expensive option, but it guarantees an OEM part and professional programming. You can expect to pay anywhere from $300 to $500 or more for the key fob and programming.
• Automotive Locksmith: A qualified automotive locksmith specializing in European vehicles can often provide and program a new key fob for significantly less than a dealership, typically in the range of $200 to $400. They use similar diagnostic equipment and can often come to your location.
• Online Retailers (e.g., Amazon, eBay): You can often find aftermarket key fobs online for a much lower price, sometimes as low as $50 to $150. However, be aware of a few things:
  • Quality: Aftermarket fobs can vary in quality. Ensure the FCC ID and part number match your original fob.
  • Cutting: The emergency key blade will still need to be cut by a locksmith or dealership to match your vehicle's ignition.
  • Programming: You will still need to take the unprogrammed fob to a dealership or locksmith for programming, adding to the overall cost.

If On-Board Programming Isn't Supported

As mentioned, the 2016 Mercedes-Benz Metris requires specialized equipment for key fob programming due to its immobilizer system. The immobilizer is an anti-theft device that prevents the engine from starting unless the correct transponder chip in the key fob is recognized by the vehicle. This is why simply cutting the key blade isn't enough; the key fob must be electronically linked to your vehicle.

When budgeting for a new key fob, consider the following:

• Cost of the fob itself: This varies greatly depending on where you purchase it (OEM vs. aftermarket).
• Cost of key cutting: If you buy an uncut aftermarket fob, a locksmith or dealer will charge to cut the emergency blade.
• Cost of programming: This is the most significant cost for vehicles like the Metris, as it requires specialized tools and expertise to connect the fob to the immobilizer system.

Find a mobile locksmith or shop on Repairius.