Mercedes-Benz S-Class W221 Keyless Go & Push Button Start System - 2025 Style Smart Key Upgrade

Bring the seamless convenience of a 2025 Mercedes flagship to your W221. Our Smart Entry and Start system eliminates the need for traditional keys, providing a truly modern "Keyless Go" experience.

This premium retrofit kit allows you to start and stop your engine with a single touch of a high-quality, silver-finished "Engine Start/Stop" button. The highlight of this upgrade is the pair of 2025-style smart keys, featuring the sleek, elongated design and premium metallic feel of the latest Mercedes-Benz generations. With integrated proximity sensors, your car will automatically unlock as you approach and lock as you walk away, ensuring both security and effortless access.

Key Features:

One-Touch Start/Stop: Includes a high-grade Engine Start button that replaces the traditional ignition cylinder for a modern look.

2025 Signature Smart Keys: Comes with two luxury smart keys designed after the newest 2025 Mercedes-Benz models.

Wireless Proximity Entry: Experience true keyless entry; the doors unlock and lock based on your distance from the vehicle.

Remote Start Capability: Supports starting your engine from a distance via the smart key to pre-condition your cabin's temperature.

OEM-Grade Integration: The system uses a dedicated control module and professional wiring harnesses for a stable and secure connection.

Enhanced Security: Features advanced encryption to protect against signal relay attacks, keeping your S-Class safe.

Technical Specifications:

Compatibility: Mercedes-Benz S-Class W221 (S350, S500, S600, S63).

Key Style: 2025 New Generation Silver/Black.

Kit Includes: 1x Control Module, 1x Start/Stop Button, 2x Smart Keys, Full Wiring Loom.