For Sell Bentley Mulsanne MMI Navigation Radio P/N 3Y0035664B 3Y0035664

Is your Bentley Mulsanne infotainment system failing? If you’re dealing with a non-responsive screen, GPS errors, or your multimedia interface (MMI) not functioning, we can help. This listing is for a professional repair service for your factory-installed Bentley MMI navigation radio, specifically for Part Numbers 3Y0035664B and 3Y0035664.

🔧 What This Service Is

This is not a new or replacement unit for sale — you are purchasing a repair service for your existing MMI navigation unit. You send your faulty head unit to Module Medics in Baltimore, Maryland, and we will diagnose, repair, test, and return the same unit to you.

Turnaround time: Approximately 2 to 3 weeks in most cases.

⚠️ Common Issues with Bentley Mulsanne MMI Navigation Systems

The MMI (Multi Media Interface) unit in Bentley Mulsanne models is known to develop a range of failures due to aging components, internal shorts, or software corruption. Some of the most frequently reported issues include:

• MMI system fails to boot

• Blank screen / Black screen

• Frozen navigation screen

• GPS not functioning or incorrect positioning

• Touchscreen unresponsive

• Radio, media, or Bluetooth unavailable

• MMI constantly restarts

• "Device Not Available" or "Navigation Unavailable" messages

• Loss of sound or distorted audio

• System freezes after startup animation

These symptoms can often be traced to internal hardware issues within the mainboard, GPS tuner module, hard drive, or power supply subsystem.

🧠 Technical Background – What Goes Wrong?

The Bentley MMI system integrates navigation, media, phone connectivity, and vehicle settings. Over time, several technical failures can occur:

• Flash memory corruption causing boot loop or freeze

• Defective hard drive impacting media and navigation

• Power supply board failure preventing startup

• GPS tuner malfunction resulting in signal loss

• Failing display controller or LVDS cable affecting screen output

• Overheating or thermal fatigue causing intermittent function

Our team performs a complete teardown and analysis of the unit. We repair or replace key components at the circuit level, reflash firmware when needed, and conduct thorough bench testing to ensure your unit is 100% operational upon return.

📎 Supported Part Numbers

• 3Y0035664B

• 3Y0035664

Have a slightly different part number? Reach out to our team before purchase to confirm compatibility.

🚘 Affected Vehicles

This repair service is specifically designed for the Bentley Mulsanne equipped with factory navigation and infotainment, including:

• Bentley Mulsanne (2010–2020)

  • Standard model

  • Mulsanne Speed

  • Mulsanne Extended Wheelbase (EWB)

If your vehicle has the OEM multimedia system with touchscreen and built-in navigation, this service likely applies to your unit.

📦 How It Works – Simple 5-Step Process

1. Place your order for the repair service through Module Medics.

2. Carefully remove the faulty MMI unit from your Bentley (contact us if you need removal guidance).

3. Ship your unit to Baltimore, MD.

4. We diagnose, repair, and test your unit using OEM-quality standards.

5. We ship it back to you ready for plug-and-play reinstallation — no reprogramming needed.

✅ What’s Included

• Full inspection and professional repair of your factory MMI unit

• 12-month warranty on the repaired components

• Bench-tested before return

• Compatible with original wiring and software

• No dealer programming required after reinstallation

💬 Questions? Contact Us

Have a different part number? Not sure how to remove the unit? Need expedited service? We’re here to help — contact our support team before placing your order.