Mercedes NTG5.5 HU5.5 Navigation Comand W205 , W213 , W222 Repair Service Navi

This is a repair service for your existing Mercedes-Benz HU5.5 COMAND Navigation Head Unit — you are NOT purchasing a replacement unit.
We restore your original HU5.5 module to full functionality and return it to you, saving you thousands over dealership replacement costs.

🔧 What Is This Service?

This is a professional, component-level repair service for the Mercedes-Benz NTG5.5 COMAND head unit, also known as the HU5.5 module. These units are prone to failure due to internal memory corruption, power delivery faults, or damaged communication circuits. Module Medics offers a highly specialized repair solution backed by years of experience and a 12-month warranty.

Your repaired unit will be fully plug-and-play — no need for recoding or adaptation. We use dealer-grade diagnostics and reprogramming tools to ensure full system compatibility upon reinstallation.

⚠️ Common HU5.5 COMAND Unit Problems:

If your Mercedes-Benz is exhibiting any of the following symptoms, it likely has a faulty HU5.5 unit:

• 🔁 System constantly reboots during startup

• ⚫ COMAND/nav unit completely dead – no power

• 🔋 Navigation/radio system drains car battery

• 🛑 Stuck on Mercedes-Benz logo screen

• 🔒 Unit won’t accept programming or coding

• 🧭 Navigation fails to load or crashes intermittently

• 📵 Radio, Bluetooth, or media functions not working

• 🧩 Touchscreen buttons or physical controls unresponsive

These issues are usually the result of hardware-level failure such as corrupt NAND memory (eMMC), voltage regulator damage, or internal logic board degradation — particularly common in regions with extreme temperature fluctuations or where battery replacements were done improperly.

🚗 Vehicles Commonly Affected:

The HU5.5 NTG5.5 navigation system is found in many 2016–2019 Mercedes-Benz models, especially those equipped with larger digital displays, touchpad controllers, and COMAND Online systems.

This repair service is suitable for:

• Mercedes-Benz W205 – C-Class (2015–2021)

• Mercedes-Benz W213 – E-Class (2016–2020)

• Mercedes-Benz W222 – S-Class (2014–2020)

• May also apply to some GLC, GLE, CLS, and other variants with HU5.5 units

🔢 Supported Part Numbers:

This service applies to all HU5.5 NTG5.5 COMAND variants found in the Mercedes S-Class and other models using this platform.

Common part number prefixes include:

• A222900XXXX

• A213900XXXX

• A205900XXXX

• A238900XXXX

If your unit’s part number differs or you're unsure of compatibility, please contact us before purchasing. We're happy to confirm support and avoid shipping delays.

🧠 Technical Background – Why Do HU5.5 Units Fail?

The NTG5.5 platform integrates complex multimedia, navigation, communication, and vehicle interface systems. The HU5.5 module is the core “brain” of these systems. Failures are most commonly caused by:

• 🔧 Corrupt internal eMMC/NAND memory, resulting in failed boot cycles

• ⚡ Voltage regulator failure, often triggered by battery surges or jump starts

• 🌡️ Thermal fatigue, leading to cracked solder joints and PCB damage

• 🔄 Failed firmware updates or corrupted coding sequences

Module Medics uses advanced repair techniques to replace failed components, restore proper firmware, and test all core functions before return.

📦 How This Service Works:

1. Purchase this listing to initiate your order.

2. Ship your faulty HU5.5 unit to our repair facility in Maryland.

3. Our certified technicians diagnose and repair your unit using factory-grade tools.

4. We return your repaired and fully tested unit via insured shipping.

⏱️ Typical turnaround time: 2–3 weeks, though some cases may vary based on queue and complexity.

✅ What’s Included:

• Full diagnostics and repair of your HU5.5 navigation module

• Testing of power, navigation, media, and communication systems

• 1-Year Limited Warranty on repair

• Return shipping within the U.S.

• Post-repair technical support if needed

❗ Important Notes:

• This is not an exchange or replacement service. You must ship your original unit.

• We do not repair units damaged by water, fire, or severe physical trauma.

• All repairs are bench-tested before return, but installation by a professional is recommended.

💬 Need Help?

Still not sure if your vehicle is equipped with a HU5.5 unit? Not sure where it’s located? Need help identifying your part number? Contact the Module Medics team — we’re happy to assist with diagnostics and verification before you order.