Best for: Screen freezing, unresponsive touch inputs, or minor Bluetooth glitches.
This method clears the temporary memory (cache) without deleting your personal data, saved addresses, or paired phones.
Method A: The Volume Button Reset (Most Common)
Method B: The Map/Tel Reset If your volume knob is unresponsive:
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):
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).
If a soft reset doesn't resolve the issue, you may need to perform a hard reset. This will restore the system to its factory settings.
Caution: A hard reset will erase all saved data, including navigation settings, Bluetooth devices, and personalized preferences.
To perform a hard reset:
Additional Tips and Precautions:
By following these steps, you should be able to reset your Mitsubishi Multi Communication System and resolve any issues you're experiencing.
To reset your Mitsubishi Multi Communication System (MMCS) soft reboot by holding the volume button for 10 seconds factory reset through the system settings
. If the screen is unresponsive or locked, specialized button combinations or a physical power cycle may be required. Reset Methods by Scenario Standard Soft Reboot (Recommended First Step) Press and hold the Volume/Power button in the center for approximately 10–15 seconds until the screen restarts.
: Clears minor glitches, connectivity issues (Apple CarPlay/Android Auto), and frozen screens without erasing data. Factory Reset (Full Data Wipe) Navigate to General Settings Return all settings to default Factory Reset mitsubishi multi communication system reset
: This will permanently erase all personal settings, Bluetooth pairings, and saved navigation data. Accessing Service Mode (Hidden Menu) With the ignition on and radio off, press and hold the buttons simultaneously for From the "Service Mode" menu, you can find Memory Initialization on page 2 to perform a deeper system reset. Unlocking Hands-Free/Bluetooth Pin button and the Seek Track Up (fast forward) button for about Handsfree Module to reset pairing options and passcodes. Troubleshooting Power and Hardware Issues
If the system is completely stuck or the screen is black, try these physical reset steps:
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 Best for: Screen freezing, unresponsive touch inputs, or
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.
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?
The Mitsubishi Multi Communication System (MMCS), a staple in models like the Outlander and Lancer since 2001, is a powerhouse for navigation and audio. However, even the best systems can freeze or lose their way.
Here is the story of how to get yours back on track, from a quick refresh to a deep restoration. The Soft Reboot: The Quick Fix
When the screen lags or a phone won't connect, your first move is a "soft reboot." Like restarting a smartphone, this clears temporary glitches without deleting your music or saved locations. Method B: The Map/Tel Reset If your volume
Method 1: While the car is on, press and hold the volume/power knob for about 10–15 seconds until the display turns black and restarts.
Method 2: For some models, you can enter an engineering menu by holding the temperature up (red) and temperature down (blue) buttons simultaneously for 8 seconds, then selecting "Reset Radio". The Hidden Menu: Deep Diagnostics
If the basic reboot doesn't work, you might need to access the "Service Mode" hidden behind the hardware buttons. Turn the ignition on but keep the radio off. Hold the Settings and Map buttons for roughly 4 seconds.
In the menu that appears, navigate to "Memory Initialization" (often on the second page) to perform a deeper system reset. The Factory Reset: Starting Over
When issues persist, a factory reset wipes the slate clean, returning all settings to their original defaults. Warning: This will erase paired phones, radio presets, and navigation history.
Navigation Path: Go to Settings > System > Factory Reset (or "Restore Defaults").
Unlocking Bluetooth: If you are locked out of the Bluetooth menu by a forgotten PIN, hold the "Info" button and the "Fast Forward/Seek Up" button for four seconds to access a module reset. The "Lost Settings" Scenario: The Reset CD
A flat battery can sometimes cause older MMCS units to lose their internal operating software entirely, leaving you with a screen displaying Japanese text and a "CD" icon.
The Solution: This requires a specific "Navigation Soft" system reset CD to reload the firmware. These discs are often hardware-specific based on whether the unit was made by manufacturers like Sumitomo Electric. When All Else Fails: Hardware Resets
If the screen is completely unresponsive or "stuck" on a boot screen:
Note: This deletes saved navigation destinations, paired Bluetooth devices, radio presets, and personal settings. Back up any data (export contacts or map data) if possible.
Typical steps (may vary by model/year):
If the touchscreen is unresponsive, a factory reset may require dealer tools or manual procedures (see below).