* Mercedes-Benz Dealership: This is the most reliable option. They have access to the proper key blanks and programming equipment specific to your car's system. Expect this to be the most expensive option. Be prepared to provide proof of ownership.
* Locksmith specializing in Mercedes-Benz: Some locksmiths specialize in high-end vehicles and have the necessary tools and expertise to cut and program keys for older Mercedes models. This is generally cheaper than the dealership but still more expensive than a typical car key. Do your research and find a reputable locksmith with experience in Mercedes-Benz vehicles. Ask about their experience with that specific year and model.
* Online Key Services: There are online services that claim to provide keys for older Mercedes, but proceed with extreme caution. Ensure they have a strong reputation and positive reviews before ordering, and be wary of scams. You may need to provide your VIN and possibly other identification.
Important Considerations for a 1991 S600:
* Key Type: Your 1991 S600 likely uses a more traditional key, possibly a "regular" key with a transponder chip (though less sophisticated than later systems). The dealership will know for sure.
* Transponder Chip: The key likely has a transponder chip embedded, which is essential for the car to start. A simple key copy won't work. The key must be programmed to your car's immobilizer system.
* VIN Number: You will absolutely need your Vehicle Identification Number (VIN) to order any replacement key.
Recommendation:
Start by contacting your local Mercedes-Benz dealership. Get a quote from them and then compare it with quotes from reputable locksmiths specializing in Mercedes-Benz. This will ensure you receive a properly functioning key and avoid potential problems. Avoid using untested online services unless you've done significant research and have confidence in their legitimacy.
