so i ran into the same issue like some of us here, my car would sometimes start and sometimes it would crank and doesnt start. I then remove the key from the ignition and wait about 10 sec and then the car starts up again. I read that this could possibly be the NATS problem im facing. Question is before i bring this in the dealership what is it EXACTLY i need to replace for this to stop happening. Lastly anyone know anywhere that can get this fix without going in to the dealership, i want them to be my last resort.

 

do you happen to have a remote start installed on the vehicle?
and year of z, mileage?

 

For complete fixed regarding the NATS you have to get the following to replaced:
1. NATS Antenna
2. BCM
3. Re-Program New Remote Keys
4. ECU (The last thing you need to replaced)

Yes I want to find out if it is possible to just replaced the NATS Antenna without replacing the others too??? But I ask my carshop and he consult with the Nissan Dealer and that's the answer! Maybe someone can tell us if replacing the NATS antenna can fixed this starting problems???

 

i've read that fixing the antenna before your bcm gets fried can fix the problem. Another option is completely disable NATS. I'm calling around to see if theres a tuner in town that has uprev pro.

No remote start, 04 95k miles

 

You will have to buy an Uprev license/tune for your car. Turning off NATS isn't something you can just do with Cipher.

 

So i just came back from the dealership and the suppose part name is call the immobiliser control unit, anyone know if thats the same as the NATS antenna?

 

They should be able to give you a part number.

 

Part number 28591M directly from Nissan. Can anyone confirm if this is the nats antenna

 

That's weird. Courtesy Parts shows that part number is for an Xterra and not a 350Z: http://www.courtesyparts.com/28591m-...2-p-10367.html

In the diagram, they do describe it as the immobilizer antenna assembly:



Looks like it's about $57

 

After a little more digging, it looks like it is interchangeable with the 350Z: http://www.courtesyparts.com/28591m-...s-p-14015.html

Here's the diagram for the part in the 350Z:



And yes, that is what you'll see some people on here calling the NATS antenna in various threads. For example, this thread is talking about the same part and calling it the NATS antenna (see their diagram and description): https://my350z.com/forum/engine-and-...ooks-like.html

 

So to fix this problem all I need is to get a new 28591M that's it!!! No need to get new BCM, New Remote Keys right? Do I need to have the Nissan computer to re-program anything????

 

28591M is a number Nissan uses to describe the type of part, that's why it shows up across different models and years for completely different parts.

The one SparkleCityHop linked to will not fit your 2004 model, I think he accidentally linked to the the one for the 2006-2007 models.

This is the one you need:

http://www.courtesyparts.com/28591m-...4_715_751_757&

Your dealer didn't want to give you the real part number in an effort to keep you from shopping around. Courtesy Parts does the same thing by obscuring the second part of the part number with their own Z33 code. Nissan Parts Zone obscures the first part of the part number with "**", so we get:

From Courtesy: Product SKU: 28590-Z33001
From Nissan Parts Zone: **590-C9965

And from all this, we can deduce that the real part number is:

28590-C9965

Hope this helps.

 

Thank you, i wanted to confirm that, that part number is the actually "NATS antenna" i'll be needing.

 

NATS antenna car mintermittent on start up symptoms


Crazy the issues some have with NATS/BCM/IPDM


Keep us posted

 

Sorry, I missed your post with the year of your car. I was just trying to translate the part number Nissan gave you.

Thanks for straightening that out Patrick!

 

So what ever happened with the issue? Did replacing the NATS antenna alone fix your problem or did you need more items? I have feeling I'm going through the same issue now.

 

Would love an answer to this - My Z just started doing this -if i replace the antenna will my starting issues go away?????

 

I am having the same problem. Has anyone had a successful repair to this issue?

 

I've fixed it for several guys by disabling NATS completely with an Uprev reflash/tune. PM me if you have any questions

 

Hey buddy, I have the same problem with my 05 g35 coupe. I was driving it and out of the. Blue my car shut off. The red security light stay on when I try to start it and it never cranks. The fans kick on when I turn the key to the on position too. Is there anyway you can help me out?
Thank you!
-Geoff