Car Won't Start After Ghost Immobiliser Install? What to Check First
Timi
A ghost immobiliser is meant to stop thieves starting your car, not you. If the vehicle will not start after an install, the cause is usually simple.
First: is it just doing its job?
A ghost immobiliser blocks the engine from starting until you enter a PIN using the car’s own buttons, like steering wheel controls or window switches, or until it detects an authorised fob or phone.
If the car will not start, the first question is whether you have disarmed it.
- Did you enter the PIN in the right order?
- Did you enter it at the right point? Many systems need the ignition on, or the engine start button pressed with the brake off, before entering the PIN.
- Did you enter it quickly enough? Some have a time limit.
- If you use a fob or app, is the fob battery OK and is the phone’s Bluetooth on?
Try again slowly, following the exact steps your installer gave you.
Common mistakes after a new install
Wrong sequence or timing
The exact process varies by system and vehicle. A lot of “faults” in the first week are just drivers getting the sequence slightly wrong. Ask the installer to show every driver how it works in person.
Using the wrong buttons
PINs often use specific buttons. Pressing the volume button when the system expects the track skip button will not work.
Forgetting service mode
If someone else, like a garage or valet, needs to drive the car, many systems have a service mode that lets the car start without a PIN for a set time. If you forgot to turn this off, or on, it can cause confusion.
Car does nothing at all
If there is no power, no lights and nothing on the dashboard, it is unlikely to be the immobiliser. Check:
- The 12V battery. Installs can sometimes leave the battery low, especially if doors were open for a long time.
- Any fuses touched during the install.
Car cranks but will not fire
This is what you would expect if the immobiliser is armed. Disarm it properly and try again.
If you are sure you have disarmed it and it still will not fire, the install may have an issue. Do not keep cranking. That can flatten the battery and flood some engines.
Warning lights after install
If you see new warning lights on the dashboard, see our guide to warning lights after an immobiliser is fitted.
Use the emergency code
Most ghost systems come with an emergency override code, usually on a card given at install. Keep it somewhere safe, not in the car. If the PIN fails, this lets you start the car while you sort it out.
If you have lost the PIN or the fob, see forgot ghost immobiliser PIN or lost fob.
When to call the installer
If you have tried the correct PIN, the emergency code and checked the battery, call the installer. Do not try to remove or bypass the unit yourself. It may affect your warranty and insurance.
For fleets
On a fleet, every driver needs to know how to start each vehicle. Traknova fits immobilisers with remote management, so you can arm, disarm and check status from one dashboard. If a driver is stuck, you can help them remotely.
See our immobilisers page, our ghost immobiliser guide and our guide to ghost immobiliser installation.
Summary
Most “will not start” problems after a ghost install are the PIN sequence or timing. Try slowly, use the emergency code if needed, and check the 12V battery. If it still will not start, get the installer back.