2016 Mercedes-Benz Sprinter Key Fob Programming Guide

Quick reference

Step-by-step on-board programming

The 2016 Mercedes-Benz Sprinter does not support DIY on-board programming for key fobs. Mercedes-Benz vehicles utilize a secure, proprietary system that requires specialized diagnostic equipment to program new keys and remotes. This process involves linking the new key to the vehicle's immobilizer system and central gateway, a procedure that can only be performed by a Mercedes-Benz dealership or a qualified automotive locksmith with the necessary diagnostic tools.

Attempting to program a key without the correct equipment can lead to issues with the vehicle's security system and may prevent the vehicle from starting. Therefore, it is strongly recommended to seek professional assistance for key fob programming for your Sprinter.

Battery replacement

1. Locate the release tab: On the back of the key fob, you will find a small, rectangular release tab. Slide this tab to the side while pulling on the metal key blade. The key blade will slide out of the fob.
2. Open the battery compartment: With the key blade removed, you'll see a small slot. Insert a thin object, such as a small screwdriver or a coin, into this slot and gently pry open the battery compartment cover.
3. Remove the old battery: Carefully remove the old CR2032 battery. Note the orientation of the positive (+) and negative (-) terminals.
4. Insert the new battery: Place a new CR2032 battery into the compartment with the positive (+) side facing up.
5. Reassemble the fob: Snap the battery compartment cover back into place and reinsert the metal key blade until it clicks securely.

Where to buy a replacement fob

• Mercedes-Benz Dealership:
  • Pros: Guaranteed genuine OEM part, expert programming, and often comes with a warranty.
  • Cons: Most expensive option, typically ranging from $300 to $500, not including programming labor.
• Automotive Locksmith:
  • Pros: Can often provide OEM or high-quality aftermarket fobs, program them on-site, and cut the key blade. Generally more affordable than the dealership.
  • Cons: Ensure the locksmith has the necessary Mercedes-Benz diagnostic equipment and experience for Sprinter vans. Prices can range from $200 to $400, including cutting and programming.
• Online Retailers (e.g., Amazon, eBay):
  • Pros: Potentially the lowest cost for the physical fob itself.
  • Cons: You will still need to find a locksmith or dealership to cut the key blade and program the key to your vehicle, adding to the overall cost. There's also a risk of purchasing a counterfeit or incompatible fob. Often, these fobs are "shells" or do not contain the necessary transponder. Avoid these unless you are certain of compatibility and have a plan for programming.

If on-board programming isn't supported

As established, on-board programming for the 2016 Mercedes-Benz Sprinter is not supported. This means you will need to rely on a professional service to program any new key fobs.

Cost Expectations: As mentioned above, expect to pay anywhere from $200 to $500 in total, depending on whether you go with a locksmith or a dealership, and if you supply your own fob (which is not recommended unless you are certain of its compatibility and have verified with the locksmith/dealer that they will program customer-supplied parts).

Immobilizer Transponder: Mercedes-Benz Sprinters utilize an advanced immobilizer system that includes a transponder chip embedded within the key fob. This transponder communicates with the vehicle's engine control unit (ECU) to authorize starting the engine. If the transponder is not correctly programmed to the vehicle, the engine will not start, even if the key blade fits the ignition. This is why specialized equipment is crucial for programming; it links the unique identifier of the transponder to the vehicle's security system.

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