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Immobilizer System

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P0512 OBD-II Trouble Code: Starter Request Circuit
Diagnostic Trouble Code (DTC): P0512 P0512 code definition The P0512 trouble code means that there has been a malfunction with the starter request. What the P0512 code means Starting a car...
P0513 OBD-II Trouble Code: Incorrect Immobilizer Key
P0513 code definition When the P0513 trouble code appears, it indicates that the powertrain control module has found an issue with the immobilizer key ID. What the P0513 code means There...
What Do the Immobilizer Warning Lights Mean?
The immobilizer warning light turns on if your anti-theft system does not recognize the car key being used, if it's the wrong key or low on battery.

Related questions

Question
No start, no crank
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. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car...
Question
My security light is on and my 2005 Chevy equinox will not start..what's going on
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...
Question
Changed battery now won't start
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,...
Question
Car immobilizer issue or faulty ignition switch?
If the vehicle is getting power and the light are coming on the dash, then the immobilizer has the ignition system disabled. Check the fuel cut off switch (vehicle safety switch) and see if it has been tripped. If the...
Question
Key getting stuck in ignition, then drains my battery
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...
Question
Disable or bypass factory security system
To temporarily override the system, see these instructions. 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, will...
Question
question
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...
Question
Battery ?
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 to rule the battery in or out as a possible cause. The security system...
Question
My car won't crank or turn over to try to start. Maybe the Infiniti immobilizer security system.
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...
Question
Car wont jump start even with new battery.
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...
Question
Car won't start
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 should be performed on the battery....
Question
Car completely died after diagnostics scan, dealer says to replace kvm and body control module, very expensive! How and y?
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...
Question
Car doesn't turn over and the engine doesn't start.
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...
Question
After unlocking the car from the drivers side, if the passenger door is opened before the key is put in the car the alarm goes off.
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...
Question
I think the immobilizer has gone on.
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...
Question
2004 Chevrolet Impala SS Security Light
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 in the key fob remote and programming the remote to...
Question
What is wrong with my car?
If the vehicle is not starting, simply request a no start diagnostic and the responding certified mechanic will get the underlying fault identified and resolved. Basically, the first thing to do is load test the battery. Although I understand your...
Question
Cant start my car.
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...
Question
My car won't start after a break-in & attempted theft.
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...
Question
Can't turn off immobilizer on 2002 Jetta 2.0l.
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, then seek out a professional, such as...

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