How to Remove LoJack From Your Car (And Your Laptop): A Complete Guide

Got a mystery device draining your battery or a tracker you suspect is hiding behind your dashboard? You’re in the right place. This guide covers everything you need to know about how to remove LoJack — from old-school radio units to modern GPS trackers and even laptop firmware. Read to the end before you touch a single wire.

First, Know What Type of LoJack You’re Dealing With

Not all LoJack systems work the same way. The removal process depends entirely on which type you have.

Here’s a quick breakdown:

Knowing your type saves you hours of wasted work.

The Legacy LoJack RF System: Already Dead

Here’s good news if you own an older vehicle. The traditional radio-frequency LoJack system worked by hiding a radio transceiver in your car. Police vehicles with special antennas would physically track the signal. No GPS, no cellular — just radio waves.

That entire network shut down. The legacy RF infrastructure is officially discontinued, and law enforcement agencies were instructed to remove and discard the tracking hardware from their patrol cars.

If you have one of these older units still installed, it’s completely non-functional. The only reason to remove it now is if the internal battery is causing a parasitic electrical drain — more on that shortly.

Quick fix for legacy RF LoJack false alarms:
According to LoJack’s own FAQ, the Key Pass fob runs on a standard coin-cell watch battery. Remove that battery from each Key Pass and let the system go into sleep mode permanently.

How to Find a Hidden GPS Tracker in Your Car

Before you remove anything, you need to find it. Installers are sneaky. They tuck these devices in spots you’d never think to look.

Check These Locations First

Under the dashboard (driver’s side footwell)
This is the most common spot. Installers need access to the ignition harness for power and the starter wire for the interrupt relay. Look for a small plastic box — roughly the size of a deck of cards — with blinking LED lights. Non-factory wiring is your biggest clue: look for aftermarket zip ties, electrical tape, or wires that don’t match the factory loom.

Behind the instrument cluster
Removing the gauge cluster bezel often reveals a large empty cavity. Trackers hide there because it offers easy wire access and total invisibility.

Behind the OBD-II port
Dealerships sometimes use a bypass harness. They move the tracker deep behind the dashboard while leaving a dummy OBD port visible. If your OBD port looks normal but something feels off, pull the panel back.

Exterior magnetic spots
Battery-powered trackers don’t need your car’s wiring at all. Check wheel wells, bumper support beams, under the fuel tank, and along the undercarriage. Bring a flashlight and feel around with your hand.

Visual Red Flags to Look For

• Wires wrapped in non-factory electrical tape
• Zip ties on wire bundles that don’t match the factory harness
• Small blinking lights (green = GPS signal, red = cellular signal)
• Antenna wires running up the A-pillar toward the roof

Why Your LoJack Might Be Killing Your Battery

This is a critical point that gets overlooked constantly.

Hardwired GPS trackers contain an internal backup battery. It keeps the unit broadcasting for several days even if someone disconnects the main car battery. Smart design — until that backup battery gets old.

Once the tracker’s internal battery degrades past the point of no return, its charging circuit keeps drawing power from your car battery in a futile attempt to recharge a dead cell. Your car battery dies in days. Mechanics replace it. It dies again. The cycle repeats until someone finds the tracker.

If you’re dealing with a mysterious dead battery on a used car or an older vehicle, a hidden GPS tracker with a failed internal battery is a prime suspect.

How to Remove a Hardwired GPS Tracker (Step-by-Step)

Important legal note first: If your car is still financed — especially through a buy-here-pay-here dealership — removing the tracker may violate your loan agreement. Wait until the loan is fully paid off, or confirm with your lender before touching anything.

Step 1: Disconnect the Car Battery

Pop the hood and disconnect the negative terminal. This prevents short circuits and protects your airbag system during dashboard work. Be aware: this will also trigger an alert to the monitoring company that a power-loss event occurred.

Step 2: Remove the Dashboard Trim

Use non-marring plastic pry tools to remove the panels under the steering column. You need full access to the ignition harness without cracking any trim.

Step 3: Identify the Tracker and Its Wires

Locate the device and trace all four wire types:

Step 4: Fix the Starter Interrupt (This Is the Critical Part)

This is where people make expensive mistakes. To install the starter interrupt, the installer physically cut your factory starter wire and routed it through the tracker’s relay.

If you just unplug the tracker, that circuit stays open. Your car won’t start.

Here’s what you must do instead:

1. Find the two cut ends of your original factory ignition/starter wire
2. Remove the aftermarket relay wires entirely
3. Reconnect the two factory wire ends permanently using insulated crimp connectors or solder with heat-shrink tubing
4. Never use tape-twisted connections — they fail from vibration

This is the step that causes car owners to panic when they don’t understand what’s underneath.

Step 5: Handle the Antennas

If your tracker uses external antennas routed up the A-pillar, trace those wires and detach them carefully. For antennas glued to the windshield, run your front defrost on high heat first. The heat loosens the adhesive without cracking the glass.

Step 6: Test Everything

Reconnect the car battery. Then verify:

• Engine cranks and starts normally
• All interior electronics work
• No warning lights on the dashboard

If you see a check-engine light, you may have an open circuit somewhere. Recheck your starter wire reconnection first.

How to Remove an OBD-II Port Tracker

This one’s simpler — unless there’s a bypass harness.

Check your OBD-II port under the steering column. If there’s a device plugged in, pull it out. Done.

But if the port looks clean and you still suspect a tracker, check behind the port itself. A bypass harness could relocate the actual tracker deeper into the dash while presenting a dummy port at the surface. Pry the panel back and inspect.

Note: Unplugging an OBD tracker usually sends an instant disconnect alert to the monitoring server.

How to Remove LoJack for Laptops (Absolute Computrace)

This is a completely different beast. LoJack for Laptops was a branded version of Absolute Computrace — a firmware-level tracking agent embedded directly into your laptop’s BIOS or UEFI chip at the factory.

You can’t delete it by reformatting the hard drive. You can’t remove it by reinstalling Windows. The firmware survives everything at the software level, including full drive replacements, because it lives in the motherboard itself.

Step 1: Check If It’s Actually Active

Open Task Manager and look for rpcnet.exe or rpcnetp.exe running as background processes. If you see either, the agent is active and communicating.

Also check your BIOS settings. Reboot and enter BIOS setup (usually F2 or Delete at startup). Look in the Security section for “Absolute Persistence” or “Computrace.” It’ll show Active, Inactive, or Permanently Disabled.

If it says Inactive and you don’t see those processes running, you’re likely fine. If it says Active, keep reading.

Step 2: Contact Absolute Software

You can’t just delete the files. The firmware will rebuild them on the next boot. You need to go through the official unenrollment process.

Contact Absolute Software support with your device’s serial number. They’ll check if the machine is tied to an active corporate subscription. If a previous owner still owns the license, Absolute needs their authorization to release the device. Without it, they won’t disable it.

Once authorized, they queue an unenrollment command on their servers. Your laptop needs to be online to receive it. The process can take up to 24 hours and several reboots to complete.

Step 3: Permanently Disable It in BIOS

Once the vendor deactivates the agent, you have a window to permanently lock it at the hardware level. This action is irreversible — but that’s exactly what you want.

Dell: Go to BIOS > Security > Absolute Persistence. Select “Permanently Disable.” The option greys out permanently and can never be changed.

Lenovo: Go to BIOS > Security > Anti-Theft > Absolute Persistence Module. Select “Permanently Disabled” and press F10 to save. This cannot be reversed.

HP: HP doesn’t give you a graphical toggle. You need PowerShell with admin rights. Run:

Get-HPBIOSSetting -Name "Absolute Persistence Module Current State"

Then disable it permanently with:

Set-HPBIOSSettingValue -Name "Permanent Disable Absolute Persistence Module Set Once" -Value "Yes"

If your machine has a BIOS admin password, include it as a parameter to authorize the change. Reboot after running the command.

What If You’re Refurbishing Multiple Laptops?

If you’re dealing with bulk refurbished machines, connecting each one to the internet to await vendor de-provisioning isn’t realistic. Specialized ITAD tools handle this entirely offline using bootable Linux environments. They detect the persistence module status and issue the permanent disable command across Dell, HP, and Lenovo machines without requiring a Windows installation or internet connection.

One Final Check After Any Removal

Whether you pulled a GPS tracker from a car or permanently disabled Computrace on a laptop, run a final verification.

For vehicles:

• Start the engine and confirm no warning lights appear
• Check that all electronics function normally
• Monitor battery voltage over the next 48 hours to confirm the parasitic draw is gone

For laptops:

• Reboot and re-enter BIOS to confirm the module shows “Permanently Disabled”
• Open Task Manager and confirm rpcnet.exe and rpcnetp.exe are completely gone
• Check C:\Windows\System32 to confirm those files no longer exist

If everything checks out, you’re done. Clean vehicle, clean laptop.