2019 Mercedes-Benz Metris Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

Unfortunately, the 2019 Mercedes-Benz Metris requires specialized diagnostic equipment for key fob programming. This means there is no DIY on-board programming procedure you can perform. The vehicle's sophisticated security system, which includes rolling codes and an immobilizer, necessitates professional programming to ensure proper function and security.

Battery replacement

1. Locate the small release tab on the side of the key fob. Slide or press it to release the emergency key blade.
2. With the emergency key removed, you will see a small slot or opening. Use a small flathead screwdriver or a similar flat tool to gently pry open the key fob casing.
3. Carefully separate the two halves of the fob. The battery will be visible, usually held in place by small clips.
4. Note the orientation of the old CR2032 battery (positive side up/down) and gently remove it.
5. Insert the new CR2032 battery with the correct orientation.
6. Align the two halves of the key fob casing and press them firmly together until they click into place.
7. Reinsert the emergency key blade.

Where to buy a replacement fob

• Mercedes-Benz Dealership: This is the most straightforward option, guaranteeing an authentic part that is fully compatible. However, it's typically the most expensive, often ranging from $300 to $500 for the fob itself, plus an additional $100-$200 for programming and key blade cutting. Prices can vary by dealership.
• Automotive Locksmith: A qualified automotive locksmith with specialized Mercedes-Benz diagnostic tools can often provide and program a new key fob for less than the dealership. They may offer both OEM and high-quality aftermarket options. Expect to pay in the range of $250-$450 for the fob and programming. They can also cut the emergency key blade.
• Online Retailers (e.g., Amazon, eBay): You can often find replacement key fobs (both OEM and aftermarket) at significantly lower prices online. However, exercise caution. Ensure the FCC ID and part number match exactly. The major drawback here is that you'll still need to pay a locksmith or dealership to program the fob and cut the emergency key blade, as you cannot do it yourself. This route is typically only cost-effective if you can find a reputable online seller and then a locksmith willing to program a customer-supplied fob at a reasonable rate.

If on-board programming isn't supported

As mentioned, the 2019 Mercedes-Benz Metris does not support DIY on-board programming. This is due to the advanced security systems that Mercedes-Benz employs, including a rolling code system and a sophisticated immobilizer transponder in the key fob. This immobilizer system prevents the vehicle from starting if an unprogrammed or incorrect key is used, providing a high level of theft protection.

When getting a new key fob for your Metris, the process will involve:

1. Key Fob Acquisition: Obtaining a key fob that is compatible with your vehicle's year, make, and model. This includes ensuring the correct FCC ID (IYZDC07) and OEM part number (A2059057602, A2059057803) or a verified aftermarket equivalent.
2. Key Blade Cutting: The emergency key blade, which is used for manual entry into the vehicle, will need to be cut to match your existing locks. This requires specialized cutting equipment.
3. Programming: The key fob's remote functions (lock, unlock, panic) and the immobilizer transponder (which allows the car to start) must be programmed to your vehicle using a diagnostic scan tool. This process typically requires access to Mercedes-Benz specific software and security codes.

Expect the total cost from a dealership or a qualified automotive locksmith to be in the range of $350-$650, encompassing the cost of the fob, cutting the emergency key blade, and programming to your vehicle.

Find a mobile locksmith or shop on Repairius.