1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your EASYGUARD Smart Key PKE (Passive Keyless Entry) kit. This system is designed to upgrade your vehicle with advanced keyless entry and start functionalities, enhancing convenience and security.
Please read this manual thoroughly before attempting any installation or operation to ensure proper functionality and to avoid potential damage.
2. Product Overview
2.1 Main Features
- PKE (Passive Keyless Entry) functionality: Automatically locks/unlocks the car when approaching or walking away (2-3 meters). PKE can be enabled or disabled.
- Adds two new key fobs to your vehicle.
- High security: Prevents car start if the key is not detected inside the vehicle.
- Retains original car factory key functions: Remote lock/unlock, trunk release, and power window up/down (if supported by the original factory key).
- Valet mode/manual lock/unlock setting.
- Remote working range of approximately 20-30 meters.
2.2 Advantages
- Plug-and-play installation (for -N-PP series), eliminating the need to solder the car key’s PCB.
- Prevents automatic car door locking when the key is inside the car.
- Avoids unintended trunk opening or window lowering issues.
- Resolves issues related to the car being unable to detect the key.
2.3 Package Contents
The EASYGUARD Smart Key PKE kit typically includes the following components:
- 2x Key Fobs
- 1x Control Module
- 1x Alarm Antenna
- 1x PKE Antenna (Front and Rear)
- Wiring Harness (Plug-and-play or standard power wire, depending on model)
3. Compatibility
This EASYGUARD Smart Key PKE kit is designed for Mercedes-Benz vehicles manufactured from 2014 onwards, equipped with the FBS4 system and an original equipment manufacturer (OEM) push-start button. It is compatible with various models including A (W176), B (W246), C (W205), E (W213), G (W166), S (W222), GLA (X156), GLC (X253), GL (W166), CLA (C117), and V (W447) series.
Important Notes:
- This series products fit for 2014+ Benz FBS4 with factory OEM push start button but without comfort access function.
- If your car is with turn key start, please buy the ESW309B-N or ESW309B-N-PP series.
- If your car is with factory OEM push start button & comfort access (factory original or aftermarket retrofit one) function, please choose the ESW312 series.
3.1 Compatible Key Fob Types
Your original car key fob and PCB should resemble the examples shown below for compatibility:
3.2 Detailed Compatibility Table
Refer to the table below to determine the correct product series for your car based on its features:
4. Installation
Professional installation by a trained installer or locksmith is highly recommended.
4.1 Pre-installation Notes
- You need to place one working factory OEM key fob's PCB inside the control module.
- This process requires disassembling the car factory key.
- After completing the wiring connection, a new programming step is required.
4.2 Control Module Preparation
To prepare the control module, you must insert the PCB from one of your working factory key fobs:
- Disassemble your car key and remove the battery.
- Unscrew the control module casing.
- Carefully take out the internal board of the control module.
- Insert the car OEM key fob's PCB into the designated slot within the control module. Ensure the car key antenna side is facing upward.
- Screw the control module board back into place and close the casing.
4.3 DIP Switch Settings
Before making wire connections, ensure the control module's DIP switches are correctly set. For default operation, DIP switches No.1, No.3, and No.6 should be in the ON position.
Note: For some car models, only DIP switch No.1 and No.3 should be ON. Always unplug the power supply wire before resetting DIP switches.
4.4 Wiring Connection
The wiring diagram below applies to ESW309C01-N, ESW309C02-N, ESW309C03-N, and ESW309C04-N series. For ESW309C01-N-PP and ESW309C02-N-PP series, installation is plug-and-play, requiring no additional wire connections.
4.4.1 Red Constant 12V Wire Connection
The red 12V wire from the EASYGUARD smart key kit must be connected to a constant 12V wire in your car (a wire that has electricity even when the car is shut off). Common constant 12V sources include:
- Main battery positive pole
- KG module (power supply for comfort access)
- Dome light (power supply for SOS)
4.4.2 Black GND Wire Connection
The black GND wire should be connected to the battery negative pole or a reliable chassis ground point.
4.4.3 CAN BUS Wire Connection
To identify CAN BUS wires:
- Turn the car to the ON position.
- Test the wires' voltage. CAN H typically reads above 2.5V, and CAN L typically reads below 2.5V. The combined voltage of CAN H and CAN L is usually around 5.0V.
- CAN BUS wires are typically twisted pairs.
The CAN BUS wire can often be found from the KG module. Refer to the example below:
4.4.4 KG Module Location for Benz Cars
The location of the KG module may vary by vehicle model. The table below provides general guidance:
| For BENZ cars models | KG module position |
|---|---|
| C class | Behind 2 screws of the left trunk |
| E class | Behind fuse box of the right trunk |
| S class | In the left of 2nd row passenger seat backrest panel |
| GLA | Below the clearer plate of the left trunk |
| GLC | On the left trunk |
| GLE | Below the carpet of the left of 2nd row passenger seat |
| GLS | In the left of 2nd row passenger seat backrest panel |
Note: The above KG module information is for reference only. The actual location or wires may vary for different vehicles in different countries.
4.5 Antenna Installation Positions
Proper placement of the antennas is crucial for optimal performance. Ensure all antennas are kept at least 10cm away from metal products.
- Front PKE antenna: Install in the front section of the vehicle.
- Rear PKE antenna: Install in the rear section of the vehicle.
- HF antenna: Can be placed in the A-pillar or inside the trim panel near the dash.
The control module is typically placed inside the trim panel near the dash or under the driver's seat.
5. Operation
5.1 Remote Control Functions
The new key fobs replicate the functions of your original factory key. Refer to the diagrams below for button assignments and functions:
Key Fob Function Summary:
| Function | Method | Note |
|---|---|---|
| PKE enable (default setting) | Holding Lock + Unlock for 5 seconds, then press Lock once to confirm. | Proximity lock & unlock. Can start the car only when key fobs are in the car. |
| PKE disable | Holding Unlock + Trunk Release for 5 seconds, then press Unlock once to confirm. | Can start the car when unlocked, but cannot start the car when locked. |
| Key detection or Manual lock/unlock | Holding Lock + Trunk Release for 5 seconds, then press Trunk Release once to confirm. | Can start the car only when key fobs are in the car. |
6. Programming
6.1 Remote Control Programming Method
After installation, you must program the new key fobs to the control module:
- Press and hold the white programming switch on the control module for 3-5 seconds. The red LED indicator on the control module will light up continuously.
- Release the programming switch.
- Quickly press the "Lock" button once on the first remote you wish to program. The indicator light will flash once, confirming successful programming for that key.
- Repeat steps 1-3 for the second and any subsequent key fobs (up to a maximum of 3 key fobs). Program all key fobs one by one.
- All programming steps must be completed within 10 seconds. If the red LED indicator on the control module turns off, the device has exited programming status.
After programming, if the PKE antenna is plugged in and the remote control is nearby, the LED indicator light on the control module will remain on, and the vehicle can be started. If the key is moved more than 5 meters away, the light will turn off, and the vehicle cannot be started.
7. Troubleshooting
- Remote control programming fails: If programming is unsuccessful, check if the remote control batteries have sufficient power. Also, try unplugging and re-plugging the power connector to the control module and attempt programming again.
- Car unable to start with key fob nearby: Ensure the PKE antenna is correctly plugged into the control module. Verify that the remote control is within the detection range (typically 2-3 meters). Check the LED indicator on the control module; it should be on when the key fob is nearby.
- PKE function not working: Confirm that PKE is enabled via the remote control (refer to Section 5.1). Check antenna placement to ensure they are not obstructed by metal objects and are at least 10cm away from metal.
- Unexpected locking/unlocking or window behavior: Review the DIP switch settings (Section 4.3) to ensure they match the recommended configuration for your vehicle model.
8. Specifications
| Attribute | Value |
|---|---|
| Model Name | ESW309C01-N-PP |
| Brand Name | EASYGUARD |
| Product Name | Smart key pke kit |
| Working Voltage | 12V |
| Item Weight | 1KG |
| Package Length | 20 cm |
| Package Width | 16 cm |
| Package Height | 7 cm |
| Origin | Mainland China |
| Feature 1 | Compatible with car with OEM push start |
| Feature 2 | Passive keyless entry |
| Feature 3 | Add 2 key fobs |
| Advantage | Plug play installation |
9. User Tips
- Installation Manual: A detailed installation manual is provided (this document and the referenced PDF) to guide you through the setup process. Professional installation is strongly recommended due to the complexity of car wiring.
- Key Fob Batteries: If you experience issues with remote control programming or PKE functionality, always check the battery level of your key fobs first. Low battery can cause intermittent problems.
- Antenna Placement: Pay close attention to the antenna placement guidelines. Keeping antennas clear of metal objects and at the recommended distances is vital for reliable PKE performance.
10. Warranty and Support
EASYGUARD provides a 1-year quality warranty and free lifetime technical support for this product. For any technical assistance or warranty claims, please contact EASYGUARD Online Store directly.
You can also refer to the official user manual PDF for additional details: User Manual (PDF)
Contact Information:
- Company: Zhongshan Yihu Electronics Co., ltd
- Email: sales@ieasyguard.com
- Website: www.ieasyguard.com
- Address: 2nd floor, building 3, NO. 77 Caihong Rd, Zhongshan city, Guangdong, China 528401
