1. Introduction
This manual provides essential information for the installation, operation, and maintenance of the BAIXINDE 3W3959108 Rear Lid Control Unit. Please read this manual thoroughly before attempting any installation or operation to ensure proper function and safety.
The 3W3959108 Rear Lid Control Unit is designed as a direct replacement part, ensuring compatibility and reliable performance for specified vehicle models.
2. Product Overview
The BAIXINDE 3W3959108 Rear Lid Control Unit is a critical electronic component responsible for managing the functions of the vehicle's trunk or rear lid system. This unit ensures seamless operation of the lid's opening, closing, and locking mechanisms.
Key Features:
- Direct OEM replacement for part number 3W3959108.
- Engineered to meet original equipment standards for fit and function.
- Ensures reliable control of the rear lid system.
Product Images:

Figure 2.1: Top view of the control unit, highlighting the main connectors and identification label.

Figure 2.2: Side profile of the control unit, illustrating its compact design and various ports.

Figure 2.3: Angled view of the unit, providing a better perspective of the connector layout and housing.

Figure 2.4: Bottom view of the control unit, showing the mounting tabs and base structure.

Figure 2.5: Alternative side view, detailing the shape and specific connector types.

Figure 2.6: End view of the unit, showing its narrowest dimension and a single connector port.

Figure 2.7: Opposite end view, revealing another set of connection points.

Figure 2.8: Angled top-front view, clearly showing the part number and primary connectors.
3. Setup and Installation
Important: Installation of automotive electronic components should ideally be performed by a qualified technician. Disconnect the vehicle's battery before beginning any electrical work.
Compatibility Check:
Before installation, verify that the OE number 3W3959108 matches your vehicle's original part. Compare the physical appearance and connector types of the new unit with your existing one to ensure complete compatibility. This unit is compatible with Bentley Continental II models.
Installation Steps:
- Safety First: Ensure the vehicle is turned off and the battery is disconnected to prevent electrical shorts or damage.
- Locate Existing Unit: Identify the location of the existing rear lid control unit in your vehicle. This typically involves removing trim panels in the trunk area.
- Disconnect Wiring: Carefully disconnect all electrical connectors from the old control unit. Note their positions if necessary.
- Remove Old Unit: Unmount the old control unit from its bracket or mounting points.
- Install New Unit: Position the new BAIXINDE 3W3959108 unit into the mounting location and secure it.
- Connect Wiring: Reconnect all electrical connectors to the new unit. Ensure each connector is firmly seated.
- Reassemble: Reinstall any removed trim panels.
- Reconnect Battery: Reconnect the vehicle's battery.
- Test Functionality: Test the operation of the rear lid to ensure the new control unit is functioning correctly.
4. Operating Instructions
Once installed, the BAIXINDE 3W3959108 Rear Lid Control Unit operates automatically in conjunction with your vehicle's existing systems. There are no direct user controls on the unit itself.
Operation of the rear lid (trunk) will be managed through the vehicle's standard controls, such as:
- Remote key fob buttons.
- Interior release buttons (e.g., dashboard or driver's door panel).
- Exterior release handle/button on the trunk lid.
Refer to your vehicle's owner's manual for specific instructions on operating the rear lid system.
5. Maintenance
The BAIXINDE 3W3959108 Rear Lid Control Unit is a sealed electronic component and requires no routine maintenance. To ensure its longevity and proper function:
- Keep the surrounding area clean and free from debris.
- Avoid exposing the unit to excessive moisture or extreme temperatures beyond typical automotive operating conditions.
- Ensure all electrical connections remain secure and free from corrosion.
Do not attempt to open or repair the unit yourself, as this may void any applicable warranty and could cause further damage.
6. Troubleshooting
If you experience issues with your rear lid operation after installing the BAIXINDE 3W3959108 control unit, consider the following troubleshooting steps:
- No Operation:
- Check all electrical connections to the control unit for proper seating.
- Verify that the vehicle's battery is fully charged and properly connected.
- Check relevant fuses in the vehicle's fuse box that control the trunk/rear lid system. Refer to your vehicle's owner's manual for fuse locations.
- Intermittent Operation:
- Inspect wiring for any signs of damage, fraying, or loose connections.
- Ensure the unit is securely mounted and not subject to excessive vibration.
- Incorrect Functionality:
- Double-check that the installed unit's OE number (3W3959108) precisely matches the original part number for your vehicle.
- Ensure the unit's connectors are identical to the original and are plugged into the correct ports.
If problems persist after performing these checks, it is recommended to consult a professional automotive technician for diagnosis and repair.
7. Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | BAIXINDE |
| Brand | BAIXINDE |
| Model Name | Instrument Panel Junction |
| Item Model Number | 3W3959108 |
| Manufacturer Part Number | 3W3959108 |
| Compatible with | Bentley Continental II |
| Country of Origin | China |
| Exterior Finish | Machined |
8. Warranty and Support
BAIXINDE stands behind the quality of its products. This Rear Lid Control Unit is designed for superior performance and reliability.
Return Policy:
The product is eligible for a 30-day refund or replacement policy from the date of purchase, as per standard retail terms.
Customer Support:
If you encounter any product quality problems, or have questions regarding installation or functionality, please contact BAIXINDE customer support. We are committed to providing timely assistance and will reply to your inquiries within 24 hours.
For support, please refer to the contact information provided with your purchase or visit the official BAIXINDE store page on Amazon.
Note: Always retain your proof of purchase for warranty claims.