1. Introduction
Thank you for choosing the TECXERLLON D5 Smart Car Air Freshener. This device is designed to enhance your driving experience with long-lasting fragrance, intelligent features, and customizable ambiance. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Safety Information
- Keep out of reach of children and pets.
- Do not ingest the fragrance oil. In case of ingestion, seek medical attention immediately.
- Avoid direct contact of the fragrance oil with skin or eyes. Rinse thoroughly with water if contact occurs.
- Do not expose the device to extreme temperatures or direct sunlight for prolonged periods.
- Use only the provided charging cable and fragrance refills.
- Ensure the device is placed securely in the car to prevent movement during driving.
3. Package Contents
Please check the package for the following items:
- TECXERLLON D5 Smart Car Air Freshener Unit
- Cologne Fragrance Refill (120ml)
- USB Type-C Charging Cable
- User Manual
4. Product Overview
The TECXERLLON D5 features a sleek design with advanced functionalities for a superior in-car fragrance experience.

Image: The TECXERLLON D5 Smart Car Air Freshener unit, showcasing its elegant design and fragrance bottle.
Key Features:
- 120-Day Ultra-Long Autonomy: The large 120ml reservoir provides extended use, reducing the need for frequent refills.
- RGB Music Sync Starlight: Soft LED projector lights synchronize with music, creating a dynamic and romantic ambiance.
- AI Auto Start/Stop: Automatically activates with the engine and enters standby mode after 10 minutes of parking, conserving battery and fragrance.
- Type-C Fast Charging: The 300mAh battery charges fully in approximately 1 hour, providing up to 1600 sprays or 120 days of use.
- 4 Fragrance Modes: Customizable intensity from strong to soft to suit various preferences and scenarios.
- Luxurious Cologne Scent: Features a professional fragrance profile with iris/water lily top notes, jasmine/coriander heart notes, and amber/musk base notes.
- Nano Mist Technology: Instantly fills the car with a refreshing scent in just 1 second.
5. Setup
5.1 Installing the Fragrance Refill
- Gently twist the top section of the diffuser counter-clockwise to open it.
- Insert the 120ml fragrance bottle into the base, ensuring it is seated correctly.
- Twist the top section clockwise to secure it back onto the base.

Image: Close-up of the TECXERLLON D5 unit, showing the fragrance bottle and the top section, illustrating where the refill is inserted.
5.2 Placement in Vehicle
Place the diffuser securely in a cup holder or on a flat, stable surface in your car. Ensure it does not obstruct your view or interfere with driving controls.

Image: The TECXERLLON D5 diffuser placed in a car's center console, emitting fragrance and showing RGB lighting effects.
6. Operating Instructions
6.1 AI Auto Start/Stop Function
The device is equipped with an intelligent AI sensor. It will automatically turn on when your car engine starts and enter standby mode after 10 minutes of parking. No manual operation is required for basic on/off functionality.

Image: Illustration of the AI Auto Start/Stop feature, showing the diffuser activating when the car starts and powering down when parked.
6.2 Adjusting Fragrance Modes
The diffuser offers four distinct fragrance modes. Press the control button on the top of the device to cycle through the modes:
- Strong Mode (Rose Light): 1-second spray every 5 seconds. Ideal for quickly filling larger spaces.
- Mild Mode (Yellow Light): 1-second spray every 5 minutes. Provides a balanced and long-lasting scent.
- Light Mode (Blue Light): 1-second spray every 10 minutes. For a subtle fragrance experience.
- Soft Mode (Green Light): 1-second spray every 15 minutes. Creates an immersive, gentle aroma.

Image: Visual representation of the four scent modes (Strong, Mild, Light, Soft) with their corresponding spray intervals and LED light colors.
6.3 RGB Music Sync Lighting
The integrated LED lights can synchronize with music, creating a dynamic visual effect. This feature activates automatically when music is detected and the device is active. The lights project a starlight pattern, enhancing the car's interior ambiance.

Image: The TECXERLLON D5 diffuser emitting fragrance with vibrant RGB lights, illustrating the music synchronization feature.
7. Charging the Device
The TECXERLLON D5 is equipped with a 300mAh battery and supports Type-C fast charging.
- Connect the provided USB Type-C cable to the charging port on the device.
- Connect the other end of the cable to a USB power source (e.g., car charger, power bank, computer USB port).
- The indicator light will show charging status. A full charge takes approximately 1 hour.
- Once fully charged, the device can provide up to 1600 sprays or 120 days of use, depending on the selected fragrance mode.

Image: The TECXERLLON D5 diffuser connected to a Type-C charging cable, with an overlay indicating 1-hour fast charge and 300mAh battery.
8. Maintenance
- Cleaning: Wipe the exterior of the device with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Fragrance Refill: Replace the fragrance bottle when empty. Ensure the new bottle is securely installed.
- Storage: When not in use for extended periods, store the device in a cool, dry place.

Image: A transparent fragrance bottle showing the visible liquid level, emphasizing the ease of monitoring capacity for timely refills.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not spraying fragrance. |
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| RGB lights not working. |
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| AI Auto Start/Stop not functioning. |
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10. Specifications
| Model Number | D5 |
| Fragrance Capacity | 120 ml |
| Battery Capacity | 300 mAh |
| Charging Time | Approx. 1 hour (Type-C) |
| Usage Duration | Up to 120 days (depending on mode) |
| Dimensions | 15.7 x 8.71 x 8.61 cm |
| Weight | 422 grams |
| Recommended Use | Car interior |
| Manufacturer | Dongguan Xinghongrui Technology Co., LTD |
| Country of Origin | China |
11. Warranty and Support
TECXERLLON products come with a standard warranty. Please refer to the warranty card included in your package for specific terms and conditions. For technical support or customer service, please contact us at:
Email: support@tecxerllon.com
We are committed to providing high-quality products and responsive service.

Image: TECXERLLON brand commitment to high quality, responsive service, and 30-day free returns.