Mitsubishi Multi Communication System Reset Review
A blank screen or a glitchy interface on your Mitsubishi Multi Communication System (MMCS) can be frustrating. Whether you are dealing with a frozen GPS, Bluetooth pairing issues, or a system error, a reset is usually the fastest fix.
Here is a detailed guide on how to perform both a soft and hard reset on your Mitsubishi head unit. 💡 The Quick "Soft" Reset
Try this first if your screen is frozen or the audio isn't playing correctly. This method restarts the software without deleting your saved data or radio presets.
Turn the ignition on: Ensure the vehicle is in "ACC" or "ON" mode.
Locate the Power button: This is usually the volume knob or a dedicated power button.
Press and Hold: Keep the power button pressed for about 10–15 seconds.
Wait for the Logo: Release once the Mitsubishi logo appears on the screen. 🛠️ The Hard Reset (Factory Restore)
Use this if you are selling the car or the soft reset didn't fix the bug. Warning: This will wipe all saved addresses, paired phones, and custom settings. For Newer Models (Touchscreen Units) Push the Settings or Menu button. Select System from the on-screen menu. Look for System Information or Maintenance. Tap Restore Default Settings or Factory Reset. Confirm your choice and wait for the system to reboot. For Older Units (With SD Cards)
Some older MMCS units require a specific button combination to enter the "Service Menu": Hold the MAP and SET buttons simultaneously for 5 seconds. A hidden service menu will appear. Select Memory Initialization.
This will clear the HDD/Internal memory and reboot the system. 🔋 The "Battery Pull" Method
If the screen is completely black and won't respond to buttons, you can force a hardware reset by cutting the power. Pop the hood and locate the Negative (-) battery terminal. Use a wrench to loosen the nut and pull the cable off. Wait 10 minutes to allow the capacitors to fully discharge. Reconnect the cable.
Note: You may need to enter a Security PIN code once the system restarts. This is usually found in your owner's manual or on a card in the glovebox. ⚠️ Troubleshooting Common Issues
Software Updates: If the system resets frequently on its own, you likely need a firmware update. Check the Mitsubishi owner's portal for your VIN.
Stuck on "Loading": This often indicates a corrupted SD card or a failing Hard Drive (in older models). Try ejecting and re-inserting the Map SD card.
Touchscreen Unresponsive: If the reset doesn't work, the digitizer (the glass layer) might be physically damaged.
To help me give you more specific instructions, could you tell me: What is the year and model of your Mitsubishi? Does your unit have an SD Card slot on the front?
Are you seeing a specific error message (e.g., "Check System" or "Insert Map Card")? mitsubishi multi communication system reset
How to Reset Your Mitsubishi Multi Communication System (MMCS)
The Mitsubishi Multi Communication System (MMCS) is the brain of your vehicle’s infotainment, housing your navigation, audio settings, and vehicle diagnostics. However, like any computer, it can occasionally freeze, lag, or run into software glitches.
Whether you're dealing with a stuck GPS screen or preparing to sell your car and want to wipe your personal data, knowing how to perform a reset is essential. Here is a comprehensive guide on the different ways to reset your MMCS. 1. The Soft Reset (Standard Reboot)
If your screen is unresponsive or the Bluetooth isn't connecting, a soft reset is the first thing you should try. This restarts the software without deleting your saved locations or radio presets. Steps to perform a soft reset: Turn the vehicle ignition to the ACC or ON position. Locate the Power/Volume knob.
Press and hold the power button for approximately 10–15 seconds.
The screen should go black and then display the Mitsubishi logo as it reboots. 2. The Hard Reset (Battery Disconnect)
If the software is completely locked up and the power button doesn't respond, you may need to perform a "hard" power cycle by cutting the power source. Steps to perform a hard reset: Turn off the engine and remove the key. Open the hood and locate the vehicle battery.
Disconnect the negative (black) terminal for at least 10 minutes. Reconnect the terminal and start the car.
Note: This may reset your clock and some engine drive-cycle data, but it often clears deep-rooted electronic "bugs." 3. Factory Reset (Restoring to Original Settings)
If you want to clear all stored addresses, paired phones, and customized vehicle settings, you need to perform a Factory Reset through the system menu. Steps for newer MMCS models (Touchscreen): Press the Settings or Setup button. Select System.
Scroll down to find Restore Default Settings or Factory Reset.
Confirm your choice. The system will wipe all user data and reboot. 4. Entering the Hidden Service Menu
For advanced users or those dealing with persistent hardware errors, Mitsubishi systems often have a hidden "Service Mode." How to access it (Common method): Turn the ignition to ACC.
Press and hold the Map and Menu buttons simultaneously for several seconds.
A service screen should appear. From here, you can run self-diagnostics or perform a "Memory Initialization."
Warning: Be careful in this menu. Changing settings without knowing their function can disable features like the rearview camera or navigation. Common Reasons for a Reset Frozen Navigation: The map stops tracking your location. A blank screen or a glitchy interface on
Bluetooth Connectivity Issues: The system fails to pair with new devices or drops calls.
Audio Failure: The radio stays silent despite the volume being turned up.
Selling the Vehicle: Ensuring your "Home" address and contact list are erased for privacy. Troubleshooting Tips
Check the SD Card: Many MMCS issues are actually caused by a corrupted Navigation SD card. Try ejecting and re-inserting the map card before performing a full reset.
Update Firmware: If you find yourself resetting the unit frequently, visit a Mitsubishi dealer to see if there is a software update (firmware) available for your specific model year.
Summary: Most Mitsubishi Multi Communication System issues can be solved with a simple 10-second hold of the power button. If the problem persists, a factory reset via the settings menu is your best bet for a fresh start.
Are you experiencing a specific error code or a black screen on your display?
To reset your Mitsubishi Multi Communication System (MMCS) or modern Mitsubishi Connect infotainment unit, you can use several methods depending on whether you want to clear a minor glitch or erase all personal data. 1. Soft Reset (Reboot)
Use this if the screen is frozen, Bluetooth is acting up, or apps like Apple CarPlay or Android Auto are not responding. This does not erase your data.
Method: Press and hold the Power/Volume button for approximately 10 to 15 seconds.
Result: The screen will go black and then restart, clearing temporary system glitches. 2. Factory Reset (Hard Reset)
Use this if you are selling the car or if a soft reset did not fix the issue. This erases all user data, including saved locations, paired phones, and system settings.
Navigate to Settings: Go to the Settings menu on your screen.
Select System: Tap on System (or General Settings on some models).
Reset: Select Factory Reset or Return all to default. Confirm the action when prompted. 3. Service Menu Reset (For Specific Lockouts)
If you are locked out of the Bluetooth or hands-free system and need to reset the passcode, you can access a hidden service menu on many MMCS models. Press the MENU button or tap the Setup/Settings
Combination: Press and hold the Info button and the Seek Track Up (Fast Forward) button simultaneously for about 4 seconds.
Unlock: Navigate to the Handsfree Module menu and select Unlock or Reset to clear existing pairing codes. 4. Bluetooth Troubleshooting
If only Bluetooth is failing, try "forgetting" the connection before performing a full system reset:
On the System: Go to Settings > Connections > Bluetooth, find your device, and select Forget Device.
On your Phone: Remove the "Mitsubishi" entry from your phone's Bluetooth list before attempting to repair.
For more detailed technical guides or specific model updates, you can check the Mitsubishi Connect Support Page or view instructional videos from owners on platforms like YouTube.
Are you experiencing a specific error message or is the screen completely unresponsive?
3. Factory Data Reset (Erase All Data)
Best for: Selling the car, fixing corrupted navigation data, or resolving persistent software bugs.
Warning: This will delete all paired phones, navigation favorites, trip history, and audio settings.
Instructions:
- Press the MENU button or tap the Setup/Settings icon on the screen.
- Select System Settings (sometimes labeled "General" or "System").
- Scroll down to find Restore Factory Defaults or Initialize.
- Enter the security PIN if prompted (default is often 0000 or 1234).
- Confirm the reset. The system will reboot and return to the "out-of-the-box" state.
Alternative Method (Service Menu) for older MMCS: If the screen is accessible but settings are locked:
- Go to the Navigation screen.
- Tap: Menu > Settings > System Info.
- Tap and hold the center of the screen (or specific corner depending on the year) for 5 seconds.
- A hidden menu will appear.
- Select Clear Memory or Format NAND (Caution: Only use this if you have the navigation SD card/DVD to reinstall the maps afterward).
Level 3: The "Factory Reset" (Wipe Data)
Use this when: The system is buggy, you are selling the car, or you need to clear previous owner's data. Warning: This deletes all saved data.
This is accessed through the hidden Service Menu.
Battery disconnect (power reset)
As a last resort for persistent electrical glitches:
- Ensure you have radio security code (if required) and any needed settings saved elsewhere.
- Turn ignition off and remove key.
- Disconnect the negative battery terminal for 10–15 minutes.
- Reconnect terminal, then start the vehicle and check MMCS.
Warning: This may clear other vehicle memory (radio presets, clock) and can require reinitialization.
Method 4: Factory Reset via System Settings (If Screen is Working)
Use this method only if you can access the settings menu and want to erase all personal data.
Steps:
- From the home screen, tap Settings (gear icon).
- Scroll to System or General (varies by firmware version).
- Tap Reset or Restore Factory Defaults.
- You may be prompted to enter a code. Common codes: 0000, 1234, or 1111.
- Confirm the reset. The system will erase all data and reboot.
Caution: A factory reset will not fix hardware issues (e.g., a dead touchscreen digitizer). It also will not remove region-locked navigation data.
1. Polarity Error on TB5
Mitsubishi's M-Net communication is polarity-sensitive. If someone swapped the inner and outer wires on the terminal block, the system will refuse to reset. Verify that the same color wire (e.g., Red) goes to terminal 1 on the indoor and terminal 1 on the outdoor.