Troubleshooting Trackers

Important Notes:

  • We will help diagnose and support you with issues that arise, however, we will not always be able to remotely fix issues with trackers and may at times request they are returned to us for diagnosis.
  • Ensure you send any devices back to us via a tracked and insured method as you are responsible for any lost items - Only send them back if advised to by our Support team.
  • It is your responsibility to maintain the device and installation
  • If your trackers are in remote locations, strange positions or just installed incorrectly this can affect their usage.
  • We no longer support the old O2 sim cards, if you have these and the device stops working we will require you to update to our new Truphone sim card.

Each device has two LED lights on them Status and Navigation, these should both be flashing every second for normal use. 

Navigation LED

  • Permanently switched on > GNSS signal is not received
  • Blinking every second > Normal mode, GNSS is working
  • Off > GNSS is turned off because the Device is not working or Device is in sleep mode

Status LED

  • Blinking every second> Normal mode
  • Blinking every two seconds > Sleep mode
  • Blinking fast for a short time > Modem activity
  • Off > Device is not working or Device is in boot mode

My device has no lights what should I do?

Hard-Wired Tracker

If you have a Hard-Wired device with no lights at all please check the installation as per the manufacturer's guide for your model and do the following:

1. Remove the device from the vehicle

2. Remove the battery for 30 mins > Reinstall

3. If possible install the device in another vehicle to test.


2G Hard Wired
 (FMB920) 

4G Hard Wired (FMC920)

Wireless Self-Installed Tracker 

If you have a Wireless Self-Installed device with no lights at all please do the below and check the installation is correct: 

1. Remove the plug-in tracker from the vehicle

2. Open the tracker case

3. Remove the pins connecting the battery to the green board - Wait for 20 secs

4. Plug the pins connecting the battery back to the green board

5. Close the tracker case

6. Plug the tracker back in - Wait 5 mins - Both lights should be flashing every second.

7. Plug the tracker into another vehicle to rule out the OBD2 port.

2G Self Installed (FMB001) 

4G Self-Installed (FMC001)

My device has one light what should I do?

Hard-Wired Tracker: FMB920 or FMC920

Email support@commusoft.com supplying the Following:

  • Full Commusoft Username for the allocated user experiencing the issue.
  • The IMEI number of the device.
  • 10-second video of the device, clearly showing the lights.
  • Description of what steps you have already taken.

Wireless Self-Installed Tracker: FMB001 or FMC001

If you have a Wireless Self-Installed (FMB001) device with no lights at all please do the below: 

1. Remove the plug-in tracker from the vehicle

2. Open the tracker case

3. Remove the pins connecting the battery to the green board - Wait for 20 secs

4. Plug the pins connecting the battery back to the green board

5. Close the tracker case

6. Plug the tracker back in - Wait 5 mins - Both lights should be flashing every second.

7. Plug the tracker into another vehicle to rule out the OBD2 port.

The above steps didn't solve the issue what should I do?

Email support@commusoft.com supplying the Following:

  • Full Commusoft Username for the allocated user experiencing the issue.
  • The IMEI number of the device.
  • 10-second video of the device, clearly showing the lights.
  • Description of what steps you have already taken.