1. Gather Necessary Tools and Information:
- Replacement key (new or refurbished)
- Vehicle Identification Number (VIN)
- Owner's manual or vehicle-specific documentation
- Spare key or original key (if available)
- Ignition key code or key cutting code (provided by your local Mercedes dealership)
2. Disassemble the Key Fob:
- Locate the small release button on the side or back of the key fob.
- Press the release button to separate the key blade from the key fob housing.
- Remove the old key blade from the housing.
3. Cut the Replacement Key:
- Take the replacement key blade and the ignition key code or key cutting code to a locksmith or automotive store that provides key cutting services.
- Provide them with the key code or cutting instructions.
- The locksmith will cut the new key to match the original key's profile.
4. Insert the Cut Key:
- Once the key is cut, insert it into the key fob housing.
- Make sure it's securely in place.
5. Reprogramming:
- Check the owner's manual or vehicle documentation to see if the replacement key requires programming. Some Mercedes models require programming.
- If programming is needed, take the replacement key and your vehicle to an authorized Mercedes dealership or a qualified auto locksmith who has the necessary equipment and software.
6. Test the Key:
- Try inserting the new key into the ignition and turning it to the "On" position.
- If the car starts and functions normally, the key replacement and programming (if necessary) were successful.
Please note that the process may differ slightly based on the year, model, and specific features of your Mercedes C320. It's always recommended to consult your vehicle's owner's manual or seek guidance from a professional locksmith or Mercedes dealership to ensure a proper and safe replacement.
