Mercedes Navigation Comand Navi W221 S & W216 CL NTG 3.5 NTG3.5 REPAIR SERVICE

For W221 S-Class & W216 CL-Class | HU3.5 | 1-Year Warranty

🔧 Expert Repair Service for Your Original Mercedes-Benz COMAND Unit (NTG 3.5 / HU3.5)

This listing is for a professional repair service of your existing Mercedes-Benz COMAND head unit, specifically the NTG 3.5 (HU3.5) used in the W221 S-Class and W216 CL-Class.
You are not purchasing a replacement unit — we repair your original module and return it to you, fully functional.

❗ Common NTG 3.5 / HU3.5 Head Unit Issues We Fix:

The NTG3.5 infotainment system is prone to several known hardware-related problems. Our experienced technicians address all common failure points, including:

• 🔁 Unit constantly rebooting

• ⚫ Completely dead / not powering on

• 🔋 Radio or system draining vehicle battery

• 🧊 Frozen on Mercedes-Benz logo / startup screen

• ❌ Fails to accept new software programming or coding

• 📀 DVD/CD mechanism not working

• 🔈 No sound or intermittent audio

• 💡 Navigation, Bluetooth, or media interface malfunctioning

• ⚠️ Random restarts or slow response times

These failures are typically caused by issues with internal NAND memory, voltage regulators, defective ICs, or board-level power faults.

📍 Repair Service Details:

• ✅ This service is for HU3.5 / NTG3.5 units only

• 🧠 Component-level repair using OEM-grade parts

• 🧪 Unit is bench-tested under real-world conditions

• 🔁 Plug-and-play: No reprogramming needed in most cases

• 🔧 1-Year Warranty included on the repaired component(s)

⚠️ Important – What You're Buying:

You are not buying a replacement COMAND head unit. You are purchasing a repair service for your original part.

🧾 Compatible Part Numbers:

• HU3.5 head units used in 2009–2013 Mercedes-Benz S-Class (W221)

• HU3.5 units used in 2009–2014 CL-Class (W216)

• Other part numbers may be supported – please contact us with your part number or VIN to confirm compatibility.

🚗 Common Vehicles with NTG 3.5 Systems:

This service is commonly used for the following models:

• Mercedes-Benz S-Class (W221) – 2009–2013 models

• Mercedes-Benz CL-Class (W216) – 2009–2014 models
  These vehicles are factory-equipped with the NTG 3.5 COMAND system, also known as HU3.5.

📦 How It Works:

1. Purchase the repair service here on Module Medics.

2. Carefully remove your faulty COMAND NTG3.5 unit (screen and controls not needed).

3. Ship your head unit to our facility in Maryland. (Full shipping instructions provided after checkout.)

4. Our expert technicians diagnose and repair your unit using advanced tools and techniques.

5. We ship your repaired unit back to you, fully tested and ready to reinstall.

⏱ Turnaround Time:

• Standard turnaround: 2–3 weeks

• Rush service may be available upon request (fees apply)

• Complex or severely damaged units may require additional time