Mitsubishi Multi Communication System Reset -
The Mitsubishi Multi Communication System (MMCS) serves as a central hub for navigation, audio, and vehicle settings. While generally reliable, users often need to perform a reset to resolve issues like Apple CarPlay/Android Auto glitches, frozen screens, or Bluetooth pairing failures. Standard Reset Procedures
Depending on the severity of the issue, there are three primary ways to reset the system:
Soft Reboot (Recommended First Step): This is similar to restarting a smartphone and clears temporary glitches without erasing your personal data.
Method: Press and hold the Volume button (typically in the center) for approximately 10 to 15 seconds until the screen restarts.
Factory Reset: This wipes all vehicle settings, paired devices, and stored data to return the system to its original state.
Method: Navigate to General Settings > System (or Setup) and select Factory Reset or "Return all settings to default". mitsubishi multi communication system reset
Hard Reset (Power Cycle): If the software is unresponsive, a physical power cycle may be necessary.
Method: Disconnect the vehicle's negative battery terminal for at least 10 minutes before reconnecting.
Warning: This may engage the security system or require a "relearn" process by a professional. Troubleshooting Specific Scenarios
Certain errors require specific reset techniques beyond standard reboots:
Hands-Free/Bluetooth Lockout: If you are prompted for a forgotten passcode, you can bypass it through a hidden menu. The Mitsubishi Multi Communication System (MMCS) serves as
Action: Simultaneously press and hold the INFO button and the Fast Forward (Seek Track Top) button for 4 seconds. From the resulting menu, select "Handsfree Module" and then "Unlock" to reset pairing options.
Black Screen/Power Failure: If the unit won't turn on, it may be a fuse issue.
Action: Locate the infotainment fuse (often marked by a yellow shroud in the fuse box) and reseat or replace it to restore power.
Map/DVD Errors: If the screen displays "Insert Map DVD" after a battery change, the system has lost its navigation data.
Action: Reinsert the original "Navigation Soft" CD or visit a dealer for a firmware update. When to Visit a Dealer Data loss: Resetting the MCS typically clears personal
If standard resets fail, the issue might stem from hardware faults, outdated firmware, or a weak 12V battery. Mitsubishi periodically releases Over-the-Air (OTA) updates for newer models like the 2024 Outlander PHEV to stabilize firmware and prevent system failures. If problems persist, professional diagnostics at a certified Mitsubishi Motors dealership are recommended.
Before You Begin: Important Notes
- Data loss: Resetting the MCS typically clears personal settings (radio presets, Bluetooth pairings, navigation history). It will not delete your car’s engine or safety computer data.
- Vehicle safety: Perform the reset while the car is safely parked, preferably with the engine running or ignition in the "ON" position to avoid draining the battery.
Common Issues Fixed by an MMCS Reset
- Bluetooth pairing fails or disconnects repeatedly.
- Navigation system freezes or calculates routes slowly.
- Black screen (but audio still plays).
- Touchscreen does not respond to inputs.
- Apple CarPlay or Android Auto fails to launch.
Method 3: The Hard Reset (Clearing EEPROM)
Warning: This returns the indoor unit to its factory state. If you have grouped multiple indoor units to one remote, or used a Central Controller (PAC-SC51KUA), you will lose those groupings.
Procedure for Hard Reset (Indoor Unit PCB):
- Cut power via breaker (as above).
- Open the indoor unit’s front panel and remove the electrical control box cover.
- Locate the SW1 (DIP switches) or SWE (Push buttons) on the main board.
- Set SW1-1 to ON (for older boards) OR press and hold the "Reset" button while turning the power on.
- Turn the power back on. You will hear a continuous beep.
- After 5 seconds, turn SW1-1 back to OFF or release the reset button.
- The indoor unit's EEPROM is now wiped.
You must now re-assign the refrigerant address. Without this, the indoor unit will not know which outdoor unit to talk to. Refer to your installation manual for "Address Setting" (usually setting SW2 or SW11 to match the outdoor port number).