Q: NVIS (Immobilizer System) in my Pathfinder Armada is rejecting my key; I know its correct key.

asked by on

I own a 2004 Nissan Pathfinder Armada. Had it for 6 years, great truck. Then the battery died. Its been dead for quite some time and we can't recharge it. That is not the problem, however. The problem is that we used to jumpstart it using another vehicle and it started up just fine. Then one time we tried to jumpstart it and the NVIS system kicked in and cut the engine. It was the correct key, as i use the same every time. I never got a new one or copied it, so i know its the correct key. And i know the truck had power. every electrical system was working except the ones required for the engine to be running. I did some research and found one lady with an Armada and she took it to the mechanic and they found that there was a wire in the Immobilizer that was causing interference with the Key. She said they added insulation and it started up just fine. What should I do?
My car has an automatic transmission.

A: Operating a modern computer controlled vehi...

Operating a modern computer controlled vehicle with a dead battery can damage the Powertrain Control Module due to the voltage instability, particularty voltage excursions on the high side (above 14 volts), that occur when the alternator has no buffer to offset electrical loads that normally drop in and out. Given your history of running the vehicle without a functioning battery, that could in fact be in part what is in play here. The first goal should be to repair the electrical system such that you have a functioning battery and charging system. Once that is accomplished, it will be easier to diagnosis any no start condition. Given the history, you might have to, at some point, substitute a known good PCM programmed to your vehicle. As far as the key, if it is a chip key, such do go bad from time to time. An initial quick test would be to use a known good key (that you might have stored as a spare) and see if it works with that key. Basically, without a functioning battery and charging system, you are trying to re-invent the vehicle as something it was not designed to be. YourMechanic would be pleased to help you to restore the car to its original, intended working condition. Please note that for legal and liability reasons we cannot help you defeat, or work around, intended and mandatory equipment, such as vehicle storage batteries, charging systems, and anti-theft equipment. But we absolutely can return your car to the condition it was in when it was running properly and we would be happy to help you in that regard.

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Doors not unlocking when I use key fob

Hi. I'm going to assume they open when using the door lock switch. First of all, pressing the fob once only unlocks the driver's door. The fob must be pressed a second time within 5 seconds to unlock the rear...

Q: Can a catalytic converter with manifold from a Nissan Titan fit a Nissan Pathfinder Armada

If they are both 2004 models, with the 5.6l V8, then yes, in this case, this appears to be a direct replacement. You should confirm this with whoever the parts supplier is for this part. If you need assistance with...

Q: Car starts, idles roughly, and dies.

Honda's are known to have distributor problems. I would have a technician, such as one from YourMechanic, check the codes. They usually give a cam sensor or tdc sensor code and if so you will need to replace the distributor....

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...