Jacksonville · 24/7 mobile service
Mercedes-Benz 420 key replacement in Jacksonville.
Lost your 420 key, need a spare or have a remote problem? Call with the year and your location.
Have the year, location and any working key ready. We confirm the service and quote before booking.

Find your vehicle
Choose what you know. We’ll help with the rest.
Your selection helps us direct you. Call to confirm key options for your vehicle.
Browse Mercedes-Benz model pages
- 190 key services
- 240 key services
- 260 key services
- 280 key services
- 300 key services
- 350 key services
- 380 key services
- 400 key services
- 420 key services
- 500 key services
- 560 key services
- 600 key services
- A-Class key services
- AMG GT key services
- B-Class key services
- C-Class key services
- C-Class Sedan key services
- CL-Class key services
- CLA key services
- CLA-Class key services
- CLE key services
- CLK-Class key services
- CLS-Class key services
- E-Class key services
- EQB-Class key services
- EQE-Class Sedan key services
- EQE-Class SUV key services
- EQS-Class Sedan key services
- EQS-Class SUV key services
- eSprinter key services
- G-Class key services
- GL-Class key services
- GLA-Class key services
- GLB-Class key services
- GLC key services
- GLC-Class key services
- GLE key services
- GLE-Class key services
- GLK-Class key services
- GLS-Class key services
- M-Class key services
- Metris key services
- ML-Class key services
- R-Class key services
- S-Class key services
- SL-Class key services
- SLC-Class key services
- SLK-Class key services
- SLR McLaren key services
- SLS-Class key services
- Sprinter key services
Help with your 420 key
Quick answers
Which 420 years does this page cover?
Use this model page for any year. The year, fitted equipment and any remaining key determine the exact parts and service; the finder selection is not a compatibility check.
Can I choose mobile service or visit a shop?
Call with your Jacksonville-area location for mobile availability, or contact Neptune Beach or Middleburg before travelling. We confirm whether to bring the vehicle, current keys, identification and proof of ownership or authorized use.
Visit a shop
Call before travelling to confirm your service.