Bodyguard No.1 903 Mercedes-Benz FBS4 New Generation Keyless-Go Touch Handle Solution 2019+ A-Class, B-Class, GLA, GLB, GLE 、 GLS
903 Mercedes-Benz FBS4 Key Addition SolutionFor 2019+ Mercedes-Benz MBUX models. Supports original Comfort Access, door handle sensing, Keyless-Go, and emergency start. No need to disassemble the original key. Add up to 3 smart keys with customizable key styles.Key Addition Only – All Keys Lost Not Supported.Mercedes-Benz FBS4 New Generation Keyless-Go Touch Handle Solution (FBS4 903)Product IntroductionThis solution is designed for Mercedes-Benz vehicles equipped with the new generation FBS4 (4th Generation Immobilizer) system.It is specially developed for Mercedes-Benz vehicles from 2019 onwards.Suitable for vehicles equipped with:✅ New MBUX large screen system✅ New generation flat-style Smart Key✅ Factory Push Start function✅ Door handle touch sensor / Keyless-Go entry functionThis solution keeps the original smart entry functions and provides a professional Mercedes-Benz FBS4 key solution for automotive locksmiths and specialists.Vehicle RequirementsThe vehicle must have:✅ Mercedes-Benz new generation FBS4 system✅ New flat-style Smart Key✅ Original key with 3 screws inside the rear cover✅ Push Start function✅ Door handle touch sensor / Keyless-Go entry functionProduct Features✅ Supports Original Keyless-Go Touch Handle FunctionFully supports the original smart entry system.No need to take out the key.Simply touch the door handle to:Unlock the vehicleEnter the vehicleKeep the original Keyless-Go experience✅ Keep Original Key Without DisassemblySupports original key installation without opening the key.Features:No need to disassemble the original keyNo modification to the internal key circuitKeep all original key functions✅ Emergency Start FunctionSupports emergency start function.The original vehicle key can be stored inside the main unit.If emergency starting is required:Open the main unit and remove the original key.The vehicle can then be started using the original key operation.✅ Designed for New Mercedes-Benz ModelsDeveloped specifically for new generation Mercedes-Benz FBS4 systems.Advantages:Supports 2019+ FBS4 vehiclesCompatible with MBUX large screen modelsSimple installationNo complicated wiring modificationDesigned for professional automotive locksmiths
Compatible Mercedes-Benz ModelsSuitable for approximately 2019+ Mercedes-Benz FBS4 vehicles, including:Passenger CarsA-ClassB-ClassC-Class (Selected models)E-Class (Selected models)S-Class (Selected models)SUV ModelsGLAGLBGLC (Selected models)GLEGLSFinal compatibility depends on vehicle year, VIN, and vehicle configuration.Mercedes-Benz FBS4 Solution ComparisonMercedes-Benz FBS4 solutions are different depending on:Key typeVehicle generationVehicle yearPush Start functionKeyless-Go door handle functionPlease select the correct solution according to your vehicle configuration.Please select the correct solution according to your vehicle configuration.
| Solution |
Key Type |
Vehicle Year |
Push Start |
Door Handle Touch |
Application |
| FBS4 801 |
Old-style Smart Key |
2012-2018 |
✅ |
❌ |
Smart Key + Push Start without |
| FBS4 901 |
Old-style Smart Key |
2012-2018 |
✅ |
✅ |
Smart Key + Push Start + Touch |
| FBS4 802 |
Flat Smart Key |
2015-2023 |
✅ |
❌ |
Flat Key + Push Start without Touch |
| FBS4 902 |
Flat Smart Key |
2015-2023 |
✅ |
✅ |
Flat Key + Push Start + Touch Handle |
| FBS4 803 |
3-Screw Flat Smart Key |
2019+ |
✅ |
❌ |
New Generation FBS4 / MBUX |
| FBS4 903 |
3-Screw Flat Smart Key |
2019+ |
✅ |
✅ |
New Generation FBS4 / MBUX + |
How to Choose the Correct Solution?
Before purchase, please provide:Mercedes-Benz modelProduction yearVIN / chassis numberOriginal key front and back photosDoor handle touch function confirmationOur technical team will confirm the correct solution before purchase.Designed For Professional UsersSuitable for:✅ Automotive Locksmiths✅ Mercedes-Benz Specialists✅ Automotive Electronics Technicians
Package include:
