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Infiniti Nissan Specialist
Infiniti Nissan Specialist, ASE master technician
Category: Nissan
Satisfied Customers: 919
Experience:  Infiniti Nissan specialist. ASE Master technician. 25+ years general automotive experience
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I have a 2000 Nissan Altima with the vehicle immobilizer ...

Resolved Question:

I have a 2000 Nissan Altima with the vehicle immobilizer system. I removed the battery cables to clean corrosion and now the immobilization system will not allow the engine to start. I read through the owners manual and the security light will not glow for the 20 second interval prior to the security light blinking every 3 seconds.
Submitted: 8 years ago.
Category: Nissan
Expert:  Infiniti Nissan Specialist replied 8 years ago.
Does the engine crank at all (turn over with the starter)?
If so, is the security light on solid during cranking?
Customer: replied 8 years ago.
The engine will crank and the security light luminates solid while cranking.
Expert:  Infiniti Nissan Specialist replied 8 years ago.
OK, the immobilizer system is in lock mode. Sometimes cycling the key will bring it out of lock mode. Turn the key to the on position for 5 seconds, then off for 5 seconds for 5 times or more then recheck.
If that doesn't work you may be able to reset the control unit by removing both battery cables and touching them together for a few seconds. This procedure drains the control unit capacitors and they revert to their prelearned values.
Infiniti Nissan Specialist and 2 other Nissan Specialists are ready to help you
Customer: replied 8 years ago.
The engine will crank and the security light lumintes solid while crankin.
Expert:  Infiniti Nissan Specialist replied 8 years ago.
If you have another key try it first after cycling it like I previously mentioned.
If neither of those worked, you'll have to have the vehicle towed to a dealer or shop that can diagnose the immobilizer system using a consult II scan tool and the appropriate software.