Question about Infiniti Q45

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The car is showing the security light, and it wont start.

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Hi

There is a problem with the anti theft system. This is the system that prevents the car from starting if the ignition lock cylinder is damaged when someone trys to steal the car.
You can try and do a relearn; it may let the car start after this relearn. The most common cause for this concern is the ignition lock cylinder, it has a computer sensor inside that goes bad, you have to replace the cylinder and program it.
To reprogram/relearn, put on the parking brake (this will keep the headlights from coming on and draining the battery), try to start the car, leave the key in the "on" position. The security light should not be flashing. Wait for ten minutes, the light should turn off. At this time, turn the key off for 2 seconds and try to restart. At this point, the car may start, if not let the key stay in the "on" position again for ten mins until the light turns off. Again turn the key off and try to start the car. It may take 3 times for the system to relearn, Or Repeat this process 2 more times, a total of 24-30 minutes all together. After the security light has gone out the third time, you should be able to start the car. Hope this works for you if you try 3 times and still no start, you will have to replace the ignition lock cylinder.

Let us know if you have something more to know else accept the suggestion.
Thank You for contacting Fixya.com

Posted on Jul 03, 2010

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