1. Product Overview
The XTRONS QLB149 is a 14.9-inch Android 14 car stereo designed to upgrade the in-car entertainment system for specific BMW models. It features a 2K IPS touch screen, global 4G LTE connectivity, wireless CarPlay, and Android Auto support, while retaining original vehicle functions.

Image 1.1: The XTRONS QLB149 unit showcasing its 14.9-inch 2K IPS screen, Octa-Core processor, 4GB RAM, 64GB ROM, Global 4G LTE, and support for 360 camera.
Key Features:
- 14.9-inch 2K IPS Screen: Fully-laminated, ultra-slim design with a 2560x720 resolution for vibrant colors and sharp clarity.
- Global 4G LTE: Supports Micro-SIM cards for mobile broadband connection with download speeds up to 300Mbps.
- Wireless CarPlay & Android Auto: Seamless integration with iPhone (wireless Bluetooth) and Android phones (wireless Bluetooth or wired USB) for GPS, calls, music, and voice assistants.
- Android 14 with Octa-Core Processor: Equipped with 4GB RAM and 64GB ROM for responsive performance and ample storage for applications.
- iDrive System Retention: Maintains full functionality of the original iDrive system for comprehensive control and navigation.
2. Package Contents
Verify that all components are present in the package before proceeding with installation.
- 1 x ISO Wiring Harness
- 1 x USB Cable
- 1 x Mini Microphone
- 1 x GPS Antenna
- 1 x 4G Antenna
- 1 x 4G SIM Card Slot
- 1 x Mini Speaker
- 1 x User Manual
- 1 x Audio Cable
- 1 x Installation Instruction

Image 2.1: All accessories included with the XTRONS QLB149 unit, such as wiring harnesses, antennas, and cables.
3. Setup and Installation
3.1 Vehicle Compatibility
This unit is specifically designed for BMW X5 F15 and X6 F16 models manufactured between 2014 and 2017, and is ONLY compatible with vehicles equipped with the NBT system.

Image 3.1: Visual comparison of the dashboard before and after installing the XTRONS unit, confirming compatibility with BMW X5 F15 / X6 F16 NBT systems.
3.2 How to Check Your Original System
It is crucial to verify your car's original system (NBT, CIC, CCC, or NBT EVO) before installation. Refer to the following visual guide:

Image 3.2: Detailed guide for identifying your BMW's original system type (NBT, CIC, CCC, NBT EVO) by checking the LVDS port, iDrive controller buttons, and software interface.
3.3 Important Notes on Audio Compatibility
If your vehicle does not have an audio AUX input, an FM transmitter may be required for audio functionality. XTRONS CA/ITR/FM02 and CA/ITR/FM03 are compatible options. Ensure AUX is enabled in your car's settings to utilize the head unit's audio output.

Image 3.3: Information on using an FM transmitter if the vehicle lacks an AUX audio input.
3.4 Wiring Harness Diagram
Refer to the following diagram for proper connection of the wiring harness and included components.

Image 3.4: Wiring diagram illustrating connections for LVDS, ISO harness, USB, microphone, antennas, and other inputs/outputs.
3.5 Installation Guide
Follow the provided installation instructions carefully. Professional installation is recommended.

Image 3.5: General installation guide showing the placement of the unit, GPS, and fiber optic connections.
4. Operating Instructions
4.1 User Interface and Display
The unit features a 14.9-inch 2K IPS touch screen with a 32:9 aspect ratio, supporting multi-task display and Picture-in-Picture (PIP) functionality. The user interface is designed for BMW enthusiasts, offering stylish themes and customization options.

Image 4.1: The main interface of the XTRONS unit, showing navigation, music, Bluetooth, Car Auto Play, and HD Video options.

Image 4.2: Visual representation of the screen's capabilities, including multi-tasking, Picture-in-Picture, and IPS touch functionality.
4.2 Connectivity
The unit offers multiple connectivity options for seamless integration and internet access.
- Global 4G LTE: Insert a Micro-SIM card (not included) into the dedicated slot to access 4G mobile broadband. Note: This supports internet data only, not phone calls.
- Dual Band Wi-Fi: Connect to Wi-Fi networks (2.4GHz and 5GHz) for internet access.
- Bluetooth 5.0: Supports hands-free calls, phone book sync, Bluetooth music streaming, and call history display.
- USB: Two built-in USB inputs are available for media playback and wired Android Auto connections.

Image 4.3: Overview of internet access options, including Global 4G LTE via Micro-SIM and dual-band Wi-Fi.
4.3 Wireless CarPlay and Android Auto
Connect your smartphone wirelessly for an intuitive in-car experience.
- Wireless CarPlay: Compatible with iPhone via Bluetooth for navigation, calls, music, and Siri.
- Wireless/Wired Android Auto: Connect Android phones via Bluetooth wirelessly or using a USB cable for similar functionalities and Google Assistant.
- Screen Mirroring: Wirelessly display your smartphone screen on the unit.

Image 4.4: Illustration of wireless smartphone integration features, including CarPlay, Android Auto, and voice control.
Video 4.1: Demonstration of the CarPlay function on the XTRONS QLB 14.9 Series unit, showing app navigation and responsiveness.
4.4 Navigation
The unit supports highly accurate GPS navigation with compatibility for GPS, BDS, and GLONASS systems. You can use pre-installed navigation apps or download your preferred mapping applications from the Android app store.
4.5 Original Car Functions Retained
The XTRONS unit seamlessly integrates with your BMW's existing systems, ensuring that original functionalities are preserved.
- iDrive System: Full control of the original iDrive system is retained.
- Amplifier System: Original fiber optic sound system is retained.
- Original Radio & CD Player: Access to your car's original radio and CD player functions.
- Bluetooth: Original Bluetooth functionality is maintained.
- Backup Camera Display: Supports the original backup camera display.
- Steering Wheel Control: Original steering wheel controls remain functional for audio and system navigation.
- Original Car Information Display: Vehicle information such as speed, engine speed, remaining fuel, temperature, parking brake status, and seat belt reminders are displayed.

Image 4.5: The unit displaying original car information, such as speed, engine RPM, fuel level, and temperature.

Image 4.6: Visual guide to the retained original functions, including iDrive system, amplifier, radio, CD player, Bluetooth, backup camera, and steering wheel controls.
5. Specifications
| Feature | Detail |
|---|---|
| Model | QLB149 |
| Operating System | Android 14 |
| Processor | Octa-Core |
| RAM | 4GB |
| ROM | 64GB |
| Screen Size | 14.9 Inches |
| Display Type | 2K IPS Touch Screen |
| Connectivity | Global 4G LTE, Bluetooth 5.0, USB, Wi-Fi (2.4GHz/5GHz) |
| Navigation | GPS, BDS, GLONASS (Worldwide Map Type) |
| Special Features | Wireless CarPlay, Wireless/Wired Android Auto, Screen Mirroring, Voice Command (Microphone, Touchscreen) |
| Mounting Type | Dashboard Mount |
| Product Dimensions | 14.9 x 14.9 x 14.9 inches (Unit dimensions: 372mm x 122mm) |
| Item Weight | 5.94 pounds |
6. Maintenance
To ensure optimal performance and longevity of your XTRONS car stereo, follow these general maintenance guidelines:
- Screen Cleaning: Use a soft, lint-free cloth to gently wipe the screen. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals or abrasive materials.
- Software Updates: Periodically check for and install available software updates to ensure the system runs efficiently and securely.
- Environmental Conditions: Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods when the vehicle is parked.
- Cable Connections: Ensure all cables are securely connected and free from damage. Avoid pulling on cables forcefully.
7. Troubleshooting
If you encounter issues with your XTRONS car stereo, consider the following basic troubleshooting steps:
- No Power: Check all power connections and ensure the vehicle's ignition is on. Verify fuses if necessary.
- No Sound: Confirm that the volume is not muted or set too low. Check audio cable connections and ensure the correct audio input source is selected (e.g., AUX). If using an FM transmitter, ensure it is correctly tuned.
- CarPlay/Android Auto Not Connecting: Ensure Bluetooth is enabled on both the unit and your smartphone. For wired Android Auto, try a different USB cable. Restart both the unit and your phone.
- GPS Signal Issues: Ensure the GPS antenna is properly installed and has a clear view of the sky.
- Touch Screen Unresponsive: Restart the unit. If the issue persists, a factory reset might be necessary (refer to the full user manual for instructions).
- System Lag/Freezing: Close unnecessary applications. Clear cache or perform a system restart.
For more complex issues, refer to the detailed user manual included in your package or contact customer support.
8. Warranty Information
The XTRONS QLB149 car stereo comes with a 1-Year Manufacturer Warranty. Please retain your proof of purchase for warranty claims. For detailed terms and conditions, refer to the warranty documentation provided with your product.
9. Customer Support
For any questions, technical assistance, or support regarding your XTRONS product, please contact the manufacturer directly. You can typically find contact information on the XTRONS official website or through the seller's page where the product was purchased.

Image 9.1: Guide on how to locate the 'Ask a question' feature on the seller's page for direct support.
You may also visit the official XTRONS store for additional resources and product information: XTRONS Store





