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Immobilizer System

Be sure the battery is fully charged. If you suspect low engine oil, the oil level should be checked on the oil dipstick. Of course, confirm that the engine immobilizer system (security system) is not activated thus preventing the car...

Check to see if there are any stored diagnostic trouble codes. Be sure you have a fully, 100% charged battery that passes a load test (https://www.yourmechanic.com/services/battery-is-dead-inspection). Confirm that the engine immobilizer system (security system) is not activated thus preventing the...

The battery may be discharged due to the alarm going off for a long time. You can use a voltmeter to get a rough idea of the battery's condition but technically a load test (https://www.yourmechanic.com/services/battery-is-dead-inspection) should be performed on the...

On some car alarm systems, if battery voltage drops below a threshold, the alarm goes off. In your circumstance, you should have the battery load tested (https://www.yourmechanic.com/services/battery-is-dead-inspection) to rule the battery in or out as a possible cause. The security...

The key sticking is probably a mechanical fault. There could be a problem with the key itself, the lock cylinder or any of the interlocks that affect the key and steering column. To inspect this and resolve it, just request...

Check to see if your battery voltage is low, that is below 12.6 volts. If the battery is discharged or faulty, the immobilizer system might set. If battery voltage is normal and you suspect the immobilizer system is on, to...

When someone breaks in the vehicle, the Immobilizer system shows that the doors were locked from the outside. When the doors are ajar from the outside when locked, the security would set so the vehicle could not be stolen. Look...

The engine will not start when the immobilizer system is active. Check the key to the vehicle and see if there is a remote to it. If there is a remote, then I suggest replacing the battery in the remote...

Hi there. When changing out the body control module the Immobilizer system was tripped. Either the system will have to be reset or the Immobilizer system control has to be replaced. If you need further assistance with your engine not...

To see if the Immobilizer System is not working properly or is active, check the security light on your vehicle. If the light is flashing fast, then the system is active. You can reset the system by removing the battery...

The security system warning light should not illuminate once the vehicle is started and you are driving. If the light does illuminate, that means there is a malfunction in the security system. Obviously, if this problem started immediately after you...

The P0440 code is for a malfunction in the evaporative emissions system. This is a control system malfunction code so there may be a component the vehicle computer is trying to activate that is not functioning properly or there may...

The battery in the remote may have to be replaced. The remote batteries only last around 8 years and tend to lessen the time if the keys are dropped. I suggest replacing the battery in the remote and reprogramming the...

Hello, thank you for writing in. You are in a tricky situation. It is very rare that simply pulling the diagnostic codes with a scanner would cause any kind of issue. The problem has likely stemmed from the keyless vehicle...

If prior to changing the battery you had no problems, obviously the immobilizer system is a suspect. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system is on,...

The Immobilizer System Control has failed and is stuck in lock mode. I recommend either flashing the Immobilizer System Control or replacing it. If you need further assistance with your engine not starting (https://www.yourmechanic.com/services/car-is-hard-to-start-inspection), then seek out a professional, such...

Either the key fob remote's battery is going out causing the immobilizer system to trip the security or the immobilizer system control is not responding. I recommend replacing the battery (https://www.yourmechanic.com/services/battery-replacement) in the key fob remote and programming the remote...

The key should only unlock the driver door with one turn and unlock all of the doors with two turns. If the passenger door is unlocking when the driver door is turned with one turn or if the alarm is...

You might want to first check and see if any diagnostic trouble codes (OBD-II codes) have been stored. Prior to performing diagnostics be sure you have a fully, 100% charged battery. New batteries are not necessarily charged at time of...

To temporarily override the system, see these instructions (https://www.yourmechanic.com/article/how-to-shut-off-the-anti-theft-device-in-your-car-by-jason-unrau). A permanent bypass requires re-engineering the system because engine immobilizers these days rely on multiple electronic modules and chips, the very removal or modification of any one of which, or reconfiguration,...