A tracker that shows no lights, drops offline, reports the wrong place or logs hours the vehicle never ran is almost always telling you about the install, not the device. Here is what each failure usually means and how to fix it. When you would rather we fix it, we repair installs across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi.
Work from power outward. A tracker needs three things before anything else matters: constant power, a good ground and a true ignition signal. Constant. Ignition. Ground. Once those are right, check that it can see the sky for GPS, then that it can reach the cell network, then the platform settings. Skipping straight to the platform, or swapping the device, wastes time when the cause is a loose ground.
These are the failures we see most in the field, on every brand.
| What you see | Most likely cause | What to do |
|---|---|---|
| No lights at all | No constant power, a bad ground, a blown fuse, or a harness that has come unplugged at the diagnostic port. | Meter constant and ground at the device connector. Check the fuse and every connection. Reseat the harness at both ends. |
| Lights only with the key on | Constant power was wired to an ignition or accessory circuit. | Move the constant wire to a circuit that has full battery voltage with the key off. |
| Trips or engine hours while parked | The ignition wire is on a circuit that stays live after key off, such as retained accessory power. | Find a true key-on circuit: dead with the key off, live with the key on and while cranking. |
| Never shows ignition on | The ignition wire is on a dead or wrong circuit, or not connected. | Meter the ignition wire at the device with the key on. Re-terminate it on a verified key-on circuit. |
| Offline or not communicating | Lost power, no cell coverage where it is parked, or the unit was never activated. | Check the lights first. If it has power, confirm activation with the provider and test it in an area with good coverage. |
| Wrong location or jumping around | The device cannot see the sky: steel above it, metallic window tint, or a bad mounting angle. | Relocate it with the correct side facing up and nothing metal above it, or add an external antenna. |
| No engine data or wrong odometer | Wrong harness for the vehicle, a Y-split not fully seated, or a hardwired install, which gives location and ignition but no engine data. | Confirm the vehicle is supported and the harness matches it. Reseat every connector. |
| Vehicle battery going dead | A splice keeping a vehicle module awake, a device not entering its low power mode, or another accessory. | Meter the parasitic draw with the tracker connected and disconnected. Fix the wiring before blaming the device. |
| Drops out over bumps | A loose connector, a bad crimp, tap-style splice connectors, or a ground on paint or rust. | Replace taps with proper crimped or soldered splices and move the ground to clean bare metal. |
| Dash warnings after the install | A diagnostic port device the vehicle does not like, or a damaged port. | Unplug the device and recheck. Use the harness or solution the provider specifies for that vehicle. |
| Beeping that will not stop | Driver ID, seat belt or other alerts set up in the platform. | This is a platform setting, not wiring. Change it with your administrator or provider. |
| Dead after a jump start or welding | A voltage spike damaged the device. | Replace the unit through the provider. Disconnect trackers before welding on a vehicle. |
Brand specific light meanings are on our Geotab troubleshooting, Zonar troubleshooting and Azuga troubleshooting pages.
Use a digital multimeter, not a test light, so you do not load the circuit or damage a module. With the meter on DC volts and the black lead on a known good ground:
Check at the device connector, not just at the splice. A good reading at the fuse box and a bad one at the device points to a broken wire or a bad crimp in between. Wire colors and locations for each vehicle are in our Vehicle Wiring Database.
Most tracker failures start on install day. These are the things we find when we are called to fix someone else's work:
Even a diagnostic port device needs a secure mount and a harness routed where it will not be kicked or pinched.
Only after power, ground and ignition have been metered good at the device connector. Then swap in a known good device on the same harness. If the known good device works, the original unit has failed and goes back to the provider for replacement. If the known good device also fails, the problem is still in the wiring or the harness.
Swapping devices first is the most common way to waste a service call. It replaces a working tracker and leaves the real fault in the truck.
When a fleet has more than a couple of trackers misbehaving, when old installs from a previous provider are causing problems, or when nobody in house has time to crawl under dashes. We troubleshoot and repair installs on every major brand, remove old devices and their wiring cleanly, and leave each vehicle tested before it goes back into service. Built by Installers, for Installers.
Need heavy duty trackers for your equipment? Every brand below makes them, so pick yours and we install it on your machines.
Common questions
Start with power. Most dead trackers have lost constant power, ground or ignition, or the harness has come loose. If the device has power and still does not report, check its view of the sky, cell coverage and whether the unit is activated with the provider.
The ignition wire is on a circuit that stays live, often retained accessory power. Move it to a true key-on circuit that drops when the key is off.
A properly installed tracker draws very little power and most go into a low power mode with the ignition off. A drain usually means a wiring problem, a device that is not sleeping, or another accessory. Meter the draw with the tracker connected and disconnected to find out.
It cannot see the sky. Metal, steel roofs, some window tints and bad mounting angles all block the signal. Relocate the device or add an external antenna.
Yes. We troubleshoot and repair existing installs across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi, from one vehicle to a whole fleet, and remove old devices cleanly when a fleet changes providers.
We install across Georgia, South Carolina, North Carolina, Tennessee, Virginia, Alabama, Florida and Mississippi, on site where your vehicles are. Call or text 803-513-1009.
Constant. Ignition. Ground.
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