Upgrading the infotainment system in your Mercedes-Benz GLS is an excellent way to bring cutting-edge technology, enhanced connectivity, and advanced entertainment features to your luxury SUV. Whether you want a more intuitive interface, faster response times, or seamless smartphone integration, a modernized infotainment setup can transform your driving experience. This comprehensive step-by-step guide will walk you through every phase of the upgrade process, from understanding your current system to final testing, helping you achieve a smooth and successful installation.

Step 1: Assess Your Current Infotainment System and Vehicle Compatibility

Before diving into any upgrade, it is crucial to identify the infotainment system currently installed in your Mercedes-Benz GLS. The GLS has seen several infotainment generations over the years, including COMAND, NTG (New Telematics Generation) versions, and the more recent MBUX (Mercedes-Benz User Experience) systems. Each system has unique hardware and software requirements, so knowing your exact configuration will help avoid compatibility issues.

Identify Your Model Year and Factory System

The infotainment system in your GLS can vary depending on the model year, trim level, and region. For instance, GLS models from 2016 to early 2019 typically feature versions of the COMAND system or NTG 5.5, while models from mid-2019 onwards often come equipped with the latest MBUX system, known for its advanced voice commands and touchscreen capabilities.

Check your owner’s manual or the vehicle’s infotainment settings menu to find system details. You can also use the Vehicle Identification Number (VIN) to obtain precise information by contacting your Mercedes-Benz dealer or using official online resources.

Compatibility Considerations

  • Hardware Constraints: Older GLS models may lack the necessary wiring harnesses or connectors for newer infotainment modules.
  • Software Limitations: Factory-installed systems often have firmware tailored to vehicle hardware, making third-party upgrades challenging unless designed specifically for your GLS variant.
  • Integration with Vehicle Functions: The infotainment system is interconnected with vehicle controls like climate, navigation, and safety features. Upgrades must support these integrations to avoid loss of functionality.

If you are unsure about your system’s compatibility, consult a Mercedes-Benz technician or a reputable car electronics specialist who has experience with GLS upgrades.

Step 2: Selecting the Optimal Upgrade Package for Your GLS

Once you understand your current system, the next step is choosing the right infotainment upgrade that meets your needs and budget. Mercedes-Benz offers official upgrade packages, and there are also third-party solutions designed to enhance your vehicle’s multimedia experience.

Official Mercedes-Benz MBUX Upgrade

The Mercedes-Benz User Experience (MBUX) system is the latest infotainment platform featuring a high-resolution touchscreen, natural language voice control, augmented reality navigation, and customizable displays. If your GLS doesn’t already have MBUX, upgrading to this system can dramatically improve usability.

  • Key Features: Intelligent voice assistant activated by “Hey Mercedes,” seamless smartphone integration via Apple CarPlay and Android Auto, touchpad control, and dual 12.3-inch displays.
  • Benefits: Enhanced driver assistance, modern user interface, and future-proof software updates.
  • Considerations: Upgrading to MBUX might require additional hardware changes, such as new wiring harnesses or updated control modules, which can increase installation complexity and cost.

Third-Party Infotainment Solutions

Several aftermarket companies offer infotainment upgrade kits tailored for the Mercedes-Benz GLS. These often include Android-based multimedia units with large capacitive touchscreens, support for popular navigation apps, and wireless smartphone mirroring.

  • Advantages: Lower cost compared to official upgrades, more customization options, and access to a wide range of apps.
  • Potential Drawbacks: Risk of compatibility issues with vehicle systems, possible voiding of factory warranty, and varying installation quality.

When considering third-party upgrades, ensure the product is designed specifically for your GLS model to maintain seamless integration with steering wheel controls, backup cameras, and parking sensors.

Step 3: Preparing for a Safe and Successful Installation

Proper preparation is essential to avoid damaging your vehicle’s electronics and to ensure a smooth installation process. Take your time to gather all necessary equipment and back up any existing data.

Required Tools and Materials

  • Trim removal tools – to safely detach dashboard panels without scratching or breaking clips.
  • Phillips and flat-head screwdrivers – for removing screws securing the infotainment unit.
  • Socket wrench set – for any bolts that may need loosening.
  • Anti-static gloves or wrist strap – to prevent electrostatic discharge that could damage sensitive electronics.
  • Multimeter – useful for checking electrical connections if needed.
  • Microfiber cloth – for cleaning screens and panels during installation.

Safety Precautions

  • Disconnect the Battery: Always disconnect the negative terminal of the vehicle’s battery before starting work on the infotainment system to prevent short circuits and avoid triggering error codes.
  • Static Electricity: Use anti-static measures to protect electronic components.
  • Workspace: Work in a clean, well-lit area with ample space to lay out tools and components.

Backup Existing System Settings and Data

If your current infotainment system supports exporting user profiles, navigation favorites, or paired devices, back up this information before proceeding. This can save time reconfiguring settings after the upgrade.

Step 4: Detailed Installation Process

Installing or upgrading the infotainment system involves removing the factory unit and replacing it with the new hardware. This process requires patience and attention to detail to maintain the integrity of your vehicle’s interior and wiring.

Removing the Factory Infotainment Unit

  1. Remove Dashboard Trim Panels: Using trim removal tools, gently pry off the surrounding dashboard panels. These are usually held in place by clips and screws, so be cautious to avoid breaking any parts.
  2. Unscrew the Infotainment Module: Locate and remove screws securing the infotainment head unit. Keep screws organized for reinstallation.
  3. Disconnect Wiring Harnesses: Carefully unplug all connectors from the back of the unit. Some connectors might have locking tabs that must be pressed or lifted to release.
  4. Remove Antenna and Additional Cables: Disconnect GPS antennas, USB cables, and other auxiliary connections as needed.

Installing the New Infotainment System

  1. Connect Wiring Harnesses: Attach all necessary connectors to the new unit, ensuring each connection is secure and properly seated.
  2. Install Any Additional Modules: Some upgrades require installing extra components such as amplifiers, interface adapters, or control modules in the glove box or under the dashboard.
  3. Test Connections Before Final Assembly: Temporarily reconnect the battery and power on the unit to verify that it boots up and interfaces with the vehicle systems correctly.
  4. Reassemble Dashboard Panels: Once functionality is confirmed, turn off the vehicle, disconnect the battery again, and carefully reinstall all trim panels and screws.

Professional Installation Considerations

If you feel uncertain about performing the installation yourself, it is highly recommended to seek professional assistance. Certified Mercedes-Benz service centers or specialized car audio installers have the tools and expertise to complete the upgrade without compromising vehicle warranties or system performance.

Step 5: Final Setup, Calibration, and Testing

After installation, it is important to configure and test the new infotainment system thoroughly to ensure all features operate as expected.

Initial System Setup

  • Language and Region Settings: Configure language preferences, time zone, and units of measurement.
  • Display Calibration: Adjust screen brightness, contrast, and color settings for optimal visibility during day and night driving.
  • Audio Preferences: Set equalizer settings, balance, and volume limits to suit your listening preferences.
  • Voice Control Training: If your system supports voice commands, complete any required voice training to improve recognition accuracy.

Smartphone and Device Integration

Pair your smartphone via Bluetooth and test wireless connectivity features such as hands-free calling, music streaming, and contact sharing. Enable Apple CarPlay or Android Auto if supported to access apps like Google Maps, Spotify, and messaging services directly from the infotainment screen.

Verify accurate GPS reception and test navigation routing. Confirm that rearview cameras, parking sensors, and any driver assistance features integrated with the infotainment system function correctly.

System Updates and Software Maintenance

Check for firmware updates immediately after installation. Many infotainment systems receive regular software improvements that enhance performance and add new features. Follow manufacturer instructions for downloading and installing updates via USB or over-the-air.

Additional Tips and Considerations for a Successful Upgrade

Keep Your Vehicle’s Warranty in Mind

Using official Mercedes-Benz upgrade kits and professional installation services can help maintain your vehicle’s warranty coverage. Aftermarket upgrades might void certain aspects of your warranty, so weigh the benefits carefully.

Preserve Vehicle Interior Integrity

During installation, handle trim pieces and fasteners gently to avoid damage. If any clips or screws break, replace them promptly to prevent rattling or misaligned panels.

Understand the Costs Involved

Infotainment upgrades can vary widely in price depending on the system complexity, hardware requirements, and installation fees. Official MBUX upgrades typically cost more but offer guaranteed compatibility and manufacturer support. Third-party systems may be more affordable but require careful selection and installation expertise.

Explore Additional Features You Can Add

  • Wireless Charging Pads: Some infotainment upgrades include or support integrated wireless charging for compatible smartphones.
  • Rear Seat Entertainment: Consider adding screens and multimedia options for rear passengers to enhance comfort on longer trips.
  • Enhanced Sound Systems: Upgrade your audio system with premium speakers and amplifiers to complement your new infotainment setup.

Conclusion

Upgrading the infotainment system in your Mercedes-Benz GLS can profoundly improve your in-car experience by providing faster, smarter, and more connected technology. From initial compatibility checks to final calibration, following this detailed guide will help you navigate the process with confidence and care. Whether you opt for Mercedes-Benz’s official MBUX system or a well-designed third-party alternative, a modern infotainment upgrade will make every journey more enjoyable, convenient, and safe.