Mercedes Benz Replacement Key - Mail In Replacement Key Fob Service
SKU: KEY MB TEST
TestingRecommended
- Comprehensive testing and diagnostic report on key.
- Assessment for repair or replacement.
- If no fault is found, we will return your existing key.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- Return shipping is included in the testing price.
Our Mercedes‑Benz key replacement service securely cuts and programs key fobs to your vehicle’s immobilizer so you regain reliable locking, unlocking, and starting. We can also deactivate missing keys for security. We offer a fast mail‑in module option that avoids towing and dealer delays.
Common reasons you may need a replacement key:
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Lost, stolen, or physically damaged key/fob.
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“Key Not Detected/Key not recognized” messages or the vehicle not recognizing the fob for KEYLESS‑GO starting.
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Remote buttons don’t work (or work only at very short range) even after a fresh battery.
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Worn/bent blade or broken flip mechanism on older designs, making the key unreliable or unusable.
TestingRecommended
- Comprehensive testing and diagnostic report on key.
- Assessment for repair or replacement.
- If no fault is found, we will return your existing key.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- Return shipping is included in the testing price.
Replacement
- Use if you have 1 working key.
- Replacement key programmed and cut to work in your specific vehicle’s locks.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- 100% plug-and-play solution, no other coding is required.
- A replacement key is included in the price.
- Return shipping is included in the price.
All keys lost
- Use this service if all keys are lost
- Replacement key programmed and cut to work in your specific vehicle’s locks.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- 100% plug-and-play solution, no other coding is required.
- A replacement key is included in the price.
- Return shipping is included in the price.
TestingRecommended
- Comprehensive testing and diagnostic report on key.
- Assessment for repair or replacement.
- If no fault is found, we will return your existing key.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- Return shipping is included in the testing price.
Replacement
- Use if you have 1 working key.
- Replacement key programmed and cut to work in your specific vehicle’s locks.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- 100% plug-and-play solution, no other coding is required.
- A replacement key is included in the price.
- Return shipping is included in the price.
All keys lost
- Use this service if all keys are lost
- Replacement key programmed and cut to work in your specific vehicle’s locks.
- Keys are tested in live vehicles to ensure the key is fully-functional before return.
- 100% plug-and-play solution, no other coding is required.
- A replacement key is included in the price.
- Return shipping is included in the price.
How to get a mail in replacement Mercedes Benz Key
The ECU Pro offers an affordable mail-in replacement key repair service. Our service is available if all keys are lost or if you require 1 replacement key.
Send your current EIS, and a working KEY. If all keys are lost, you only need to send the EIS
Our mail-in service is 100% plug-and-play and doesn't require any additional coding.
