How do you reset the Ford audio control module?

The Ford Audio Control Module (ACM) can be refreshed with a quick, soft reboot of the head unit, or with a more thorough power reset that may involve disconnecting the 12V battery or removing the radio fuse. After resets, you may need to re-enter any radio codes or set preferences.

What the ACM does and why resets can help

The ACM governs the vehicle’s radio, media playback, and related infotainment functions. Glitches—such as frozen screens, missing sound, or erratic behavior—often respond to resets by clearing temporary software hiccups or memory conflicts. Be aware that resets can differ depending on the model year and whether your vehicle uses Sync 3, Sync 4, or another infotainment configuration. Always consult your owner’s manual for model-specific steps.

Soft reset options

Soft resets are the least invasive and should be tried first. They reboot the head unit without significantly altering vehicle settings.

• Soft reboot of the head unit: Press and hold the power/volume button (the radio power) for about 5–10 seconds until the system restarts.


• Vehicle power cycle: Turn off the ignition, wait about 60 seconds, then restart the vehicle and check the ACM.


• Software menu reset (if available): In the ACM’s Settings, look for a Reset or Restore Factory Settings option to reboot the system without removing power from the vehicle.

These soft resets are designed to clear temporary glitches while preserving user data such as saved stations and apps in most cases.

Notes on soft resets

Not every model offers a Settings-based reset in the ACM, and the exact button combo can vary by model year. If you’re unsure, start with the long-press power button method and then try the vehicle power cycle before moving to more invasive options.

Hard reset options

If softer resets don’t fix the issue, you can perform a more thorough power reset. These steps are more disruptive and can affect saved data and system settings.

• 12V battery disconnect (brief power drain reset): With the ignition off and the key removed, disconnect the negative battery cable and wait for about 10–15 minutes before reconnecting. Reconnect the battery and start the vehicle. Be prepared to re-enter radio codes if prompted.


• Radio fuse removal: With the vehicle off, locate and remove the radio/ACM fuse for about 30 seconds to a minute, then reinsert. Start the vehicle and test the ACM. This is a milder approach than a full battery disconnect.

Hard resets can clear deeper software memory and may reset other interconnected modules. If your radio asks for a code after a battery re-connect, you’ll need the radio code from your owner’s manual or the card that came with the vehicle.

Compatibility, cautions, and best practices

Because Ford equips different trims with various versions of Sync (e.g., Sync 3, Sync 4) and infotainment hardware, the exact reset steps can differ. Some models may require a software update after a reset to restore full functionality. If you rely on FordPass or the dealer’s updates, check for available updates and install them as needed. If you’re uncomfortable performing battery work or fuse changes, or if the ACM still misbehaves after resets, seek professional service.

When to contact a dealer or a trusted technician

If resets do not resolve the problem, or if you experience persistent sounds, display glitches, or loss of connectivity, it may indicate a deeper fault with the ACM, the wiring harness, or the SYNC software. A dealer can run diagnostic tests, apply firmware updates, or replace faulty components under warranty or service programs.

Summary

Resetting the Ford ACM typically starts with a soft reboot of the head unit and, if needed, progresses to a power reset by disconnecting the 12V battery or removing the radio fuse. Be mindful that hard resets can erase saved settings and may require radio codes. Model differences mean steps can vary, so consult your owner’s manual or a dealer for model-specific guidance. If issues persist, professional service is recommended.

Why is my Ford audio not working?

If your Ford's audio is not working, start with simple fixes like checking the volume and mute settings, ensuring all connections are secure, and restarting the system by disconnecting the car battery for a few minutes or performing a master reset via the infotainment system. If these steps fail, look for issues with the specific source, such as checking fuses, restarting your phone for Bluetooth, or inspect speaker wiring and condition. 
Basic troubleshooting

• Check volume and mute: Ensure the volume is turned up and the system is not muted. 
• Restart the system: Disconnect the negative car battery terminal for a few minutes to perform a full reset, then reconnect it. This can resolve many glitches. 
• Restart your phone: If using Bluetooth, restart your phone and re-pair it with the car's system. 
• Adjust audio settings: Check the balance, fade, bass, and treble settings to ensure they aren't all the way to one side or off. 

This video demonstrates how to reset the Ford Sync system by disconnecting the battery: 58sMr Fred’s DIY Garage SchoolYouTube · Jul 21, 2023
Intermediate troubleshooting

• Check fuses: Locate the fuse box (often under the steering wheel) and check the fuses for the audio system and radio. Replace any blown fuses. 
• Check external connections: If using an auxiliary cable or USB, try a different cable to rule out a faulty one. 
• Update SYNC software: Check the Ford website for any available software updates for your SYNC system and install them if needed. 
• Perform a master reset: If the touchscreen is frozen or the system is unresponsive, a factory reset of the infotainment system can help. Consult your owner's manual for the specific steps for your vehicle's SYNC version. 

This video shows how to perform a master reset on a Ford SYNC system: 25sFord Motor CompanyYouTube · Nov 8, 2017
Advanced troubleshooting

• Inspect speakers and wiring: If only specific speakers are not working or are making crackling noises, they may be blown and need replacement. Check for loose or damaged speaker wiring behind the speakers or at the head unit. 
• Check antenna: If only the AM/FM radio is not working or has poor reception, the issue could be a loose or broken antenna wire or a faulty antenna base. 
• Look for amplifier issues: A failing amplifier can cause the entire system to stop working. If basic resets and checks don't work, the amplifier may be the problem. 

You can watch this video to learn how to reset the radio on a Ford Fiesta: 1mThe DIY Car GuyYouTube · Jun 22, 2025
When to seek professional help

• If you have gone through the above steps and the audio still isn't working, it is best to consult a qualified technician or your local Ford dealer. They have the tools to diagnose and repair hardware problems like a faulty head unit or amplifier. 

This video demonstrates how to replace the radio in a Ford Escape: 57sAmerican TechYouTube · Sep 2, 2020

How to perform a module reset on Ford Sync?

Home screen press settings on the bottom feature bar. Next press general and scroll down and hit master reset. You'll then get a popup asking if you want to reset to factory defaults.

How to reset Ford audio system?

Method 1: Quickly press the audio system Power button five times. Method 2: Press and hold the audio system Power button for 10 seconds. Upon button release, you may hear a pop sound from the vehicle's speakers. Contact an authorized Ford Dealer if the screens do not reboot properly.

How do you reset the audio control module on a Ford Fusion?

Performing a System Reset
Press and hold the Seek up and the audio unit Power buttons simultaneously until the screen goes black. Wait for the system reset to complete.