Will not start

COOPANN76

MEMBER
2004 NISSAN MURANO
3.5L
V6
2WD
AUTOMATIC
200,000 MILES

Vehicle listed above is the SL and is AWD. Model. Ever since I had to replace the ignition lock cylinder that I bought the ignition from AutoZone. The original one was with keyless entry and the store association said that it wouldn't have made a difference if the one I purchased was with or without keyless entry. So I had purchased the non-keyless entry ignition with the chipped keys. After the installation of a non-keyless entry ignition my car ran fine. A few weeks the Throttle position sensor was replaced. The next day the car wouldn't start. I have replaced the battery, the fuses and relays, also a new immobilizer and the other four components for the anti theft system has been replaced. I have tried the lock and unlock programming suggestions, also inserting and removing the key from the ignition. I bought tried and returned two different replacement key fobs from AutoZone. I only have going to the dealership option left unless someone could give me any suggestions I would be very grateful.

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

I am assuming the theft light is staying on? That is why you are thinking it is related to the keys/ignition repair?

If the light is on, we need to pull codes and see what it is telling us.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Once we know what codes are there, we need to know what it does when you turn the key. Does the engine crank but not fire or does it not even turn over?

Here is a guide that will help lay the track for if the engine is cranking. We may not have a theft system issue if that is the case. So let's start with this info and go from there. Thanks

https://youtu.be/dCjmRL3p4Cs

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Wednesday, November 25th, 2020 AT 9:20 AM

COOPANN76

MEMBER
2 POSTS

Yes, the engine turns but doesn't start. I've tried reprogramming my key with the instructions from the Nissan website and owner's manual. I didn't get a key fob when I purchased the vehicle. Yes the theft light flashes when the car is in the off and stays solid when I try to start the car. The brake light and battery light also stay on. I was wondering if replacement of the anti theft system would help even if it's an after market system? Also have checked the starter and alternator both are fine.

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Wednesday, November 25th, 2020 AT 4:22 PM

KASEKENNY

MECHANIC
18,907 POSTS

Unfortunately replacing the system at this point will not solve this. I suspect the system needs to be programmed using a scan tool capable of doing this. Take a look at this attachment and see the last sentence. Basically it says that all keys need to be present to be programmed.

At this point you don't have a "master" key programmed so the process in the manual will not work because you need to have at least one key already programmed to show that you are not trying to steal the vehicle. If this were the case, anyone could get a key and then just gain access to your vehicle and program a key and take the vehicle. So they require one already programmed to show you are the owner or at least have access to one key so you can program more.

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