Easyguard Keyless Entry System - For Mercedes-Benz W222/W205/X253 (Turn-Key Start Only) (ESW309B-N-B-BE4)

Enhance your Mercedes-Benz with a dependable EASYGUARD keyless entry system engineered for FBS4 models featuring turn key start. The EASYGUARD ESW309B-N-B-BE4 provides plug-and-play installation with no soldering needed—just remove the ignition cylinder and insert the control module using the supplied remote.

Smart Keyless Entry Upgrade for FBS4 Models

The EASYGUARD ESW309B-N-B-BE4 is a professional plug-and-play keyless entry system developed specifically for 2014 and newer Mercedes-Benz vehicles equipped with a turn key start system. This advanced upgrade is compatible with FBS4-based models such as:

• S-Class W222

• C-Class W205

• GLC X253

This kit is not compatible with factory OEM push-start models. For push-start compatibility, refer to our ESW309C-N or ESW312-N-PP series.

Key Features & Benefits For Keyless Entry System ESW309B-N-B-BE4

✅ Universal OEM-Like Functions

Remote lock/unlock and trunk release

Supports up to 2 additional keys

Operates up to 30 meters in range

High-security wireless communication

Remote key works with factory-style BE or BE4 fobs

✅ Simple Installation – No Soldering Needed

Plug-and-play design

No soldering required for the ignition cylinder or key PCB

Involves removing the ignition cylinder and disassembling the factory key

Professional installation by a trained alarm technician is necessary

✅ Reliable Performance

Preserves all original vehicle functions

Built with durable construction to match OE specifications

Powered by 2 x CR2 batteries (included)

Installation & Compatibility Notes For Keyless Entry System ESW309B-N-B-BE4

1. Only for turn key start systems in 2014+ Mercedes-Benz FBS4 models.
2. Not compatible with push-start button systems.
3. A working OEM key PCB must be inserted into the control module.
4. After installation, reprogramming is required—refer to included instructions.
5. The vehicle cannot start unless the module cover is closed after setup.

Programming Instructions For Keyless Entry System ESW309B-N-B-BE4

Remote Control Pairing

Press and hold the white programming button.
While holding it down, press the "Lock" button on the remote until the LED indicator begins flashing.

If pairing is unsuccessful, check the battery or reconnect the connector.

PKE Detection

When the PKE antenna detects the key nearby (within 5 meters), the LED stays on and the vehicle is startable.

If the key is removed, the light turns off and the car cannot start.

FAQs For Keyless Entry System ESW309B-N-B-BE4

How can I verify if my Mercedes-Benz is equipped with FBS4?
Most vehicles from 2014 onward (such as W222, W205, and X253) feature FBS4. If you are uncertain, please contact us and provide your VIN for confirmation.

Can I install it myself?

Installation should be performed only by trained alarm installers due to the module setup and factory key disassembly.

What if my car has push-start?

This model does not support OEM push-start systems. Please consider the ESW309C-N or ESW312-N-PP series for push-start compatibility.