Description
Mercedes-Benz Vito Viano W639 Radio Remote Alarm Key Fob Button is an original component from the Switches, control elements and ignition locks group, designed for remote operation of the central locking and vehicle ignition system. It is a practical solution for Mercedes Viano and Vito W639 users who want to maintain factory functionality and the consistency of the vehicle’s electronics. This used remote control is a sensible service choice, allowing for an economical yet professional repair of the control system.
Specifications and technical data
- SKU: A6397660106
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6397660106
- Substitutable numbers: A6397660106, A 639 766 01 06, ŁS
- Category: Switches & Controls
Technical characteristics and purpose
The remote key fob dedicated to Mercedes Viano and Vito W639 models works with the vehicle’s factory electronic system, providing remote control of comfort functions and vehicle access. As an element from the Switches, control elements and ignition locks category, it is an integral part of the control system, responsible for transmitting signals to body control modules and security systems.
Its original Mercedes origin promotes compatibility with the electrical installation, software, and network architecture of the vehicle. Thanks to this, once properly matched and programmed, the remote can work with existing systems without the need for interference with the car’s construction.
Function in the vehicle control system
The key fob acts as a remote switch that communicates with the vehicle via the appropriate transmission protocol. In practice, this means the ability to conveniently control functions such as locking and unlocking the vehicle or operating the security system, in accordance with the configuration of a given unit.
By maintaining the original specification, the remote works with factory body modules, which limits the risk of communication errors, interference, or problems with the vehicle recognizing the key. This is particularly important in the case of modern electronic systems, where every control element is linked to a specific car configuration.
Condition, selection, and assembly aspects
The item is offered in used condition, which allows for a cost-effective restoration of the control system’s efficiency in the vehicle. Before installation, it is recommended to verify compatibility with the specific equipment version and prepare for programming in accordance with the service procedures for the given Viano/Vito W639 generation.
When selecting a remote, it is worth paying attention to:
- compatibility with the W639 model platform,
- matching the existing security system,
- the possibility of correct coding in the vehicle.
Such an approach minimizes the risk of problems with key recognition and ensures stable operation of the control system in daily use.
Integration with other Mercedes control elements
If you are planning a comprehensive repair or upgrade of the control and security zone in your Mercedes and need other elements from the same group, such as ignition locks, steering column switches, or control modules, check the available parts in the Mercedes switches, control elements and ignition locks category.
When working with safety and control systems, it is also worth expanding your knowledge about the principles of selecting used electronic components and elements responsible for driving safety – the article Second-hand braking system: how to safely choose discs, calipers, and ABS? may be helpful, as it shows good practices when purchasing key components in a used version.
Summary
Mercedes-Benz Vito Viano W639 Radio Remote Alarm Key Fob Button is a practical service solution for users who want to maintain the factory functionality of the control and security system in their vehicle. The original element from the control group allows for consistent operation with the car’s electronics, and its use promotes the maintenance of operational comfort and predictable behavior of vehicle systems in daily use.





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