Is the truck your daily driver? I ask because if not perhaps the battery is being discharged between drives. These trucks are very sensitive to electronic issues if the battery is not in tip top shape.

 

Yes I drive it daily and often

 

Rules that out.

 

Wonder if disconnecting the charging management from the negative battery terminal would help. Keeps my A/C from bogging down like it used to. Would have done this sooner had I known.

 

Where is this at? And how do I disconnect?

 

It's a grey molex connector coming off the negative battery terminal. Looked for pictures of it in the forum to no avail. I'll look again when I get the chance. @busemans seems to have a good memory for that sort of thing, maybe he can help.

 

How will it still start if I disconnect that?

 

Yes it will run fine, It just bypasses the smart charging to save you gas. It will allow the alternator to charge like a normal old school alternator at all times. Its a grey/black plug on your negative side of the battery cable.

 

that system that you will be disconnecting just turns the alternator on and off, to conserve gas mileage. when you disconnect the "sense" wire, the alternator runs full time, like they did on older vehicles.

there is a long thread on this on the armada forum. some guy who is an electrical dude figured the whole system out and explained how it all works. the sense wire doesn't actually measure the voltage and amps the alt puts out, it just senses if current is going through the wire. the system is set to turn the alternator off at something like 12.1 volts in the ecu so once it sees that, it turns off the wire at the alternator and the sense wire sees no charge so all is good, to the ecu. but you're not charging the alternator fully because your alternator should be charging it to 13.2 volts, which is generally considered fully charged.

unplugging the sense wire lets the battery get fully charged.

 

I just looked for a stock photo online. I'm assuming it's the black box that I circled. How do you disconnect that?

 

that is actually from a first gen titan. the wire you want to unplug is on he bottom of the black box that is part of the assembly that bolts onto the negative post of your battery. there is a flat black thing taht hangs off the negative post and the light grey plug is the one that is your sense wire

 

Found this.

 

Thank you. I understand how it would affect the voltage, but would that have any impact on starting the vehicle?

 

Never know. It's free and worth a shot. Battery can cause starting issues. One guy in the comments of the video said he was on his third battery for his 2023 Titan.

 

and no, it won't make your truck have starting issues by unplugging that box. if you already have starting issues, they may continue but if its because of a low battery and your battery recharges to a more full state, it would improve your starting

 

Take it for a good drive to charge that battery up.

 

Yes, I have a feeling it might take a while to get it back to normal. Since I unplugged that plug, do I need to replace it with anything?

 

I ynplugged mine this afternoon, again. I had been watching the battery gauge for a few days to see it go from 11v to a little iver 13v, randomly.

Ever since i took the sense wire off, the battery volt meter has ben sitting dead steady a bit above 13v, ao the battery and truck should be a lot happier

 

You are going to love it when it gets warmer and you use the a/c. (wait a day or two) The a/c won't go to what feels like half power at a stop light or when coasting.

 

69 degrees? I wish

 

Yup, its a little cool

 

it should. you guys have the same system, just your sense wire is about 6 inches down the cable from the battery clamp.

 

I have never unplugged my smart wire plug. I have a battery tender I use to keep my battery charged as I don't drive the truck that often in the winter time. I let the Outback do the winter work.

 

i read that a lot on the armada forums, just not only in winter. those guys were having to use battery tenders if they didn't drive it more than almost every other day. disconnecting the sense wire seems to have helped a lot of armada guys

 

I will be trying it myself next time I drive the truck I will unplug it. I really want it to make a difference in the summer with the AC. When stopped or slow traffic the AC is still cold, but not highway speed cold. I was going to install the OEM Fan a few months back to help move more air at low speeds, but learned my truck is not pre wired for it. So this coming summer I was going to install a 14" - 16" fan with a switch hooked to my AC signal wire.

 

UPDATE: I'm back where I started. I'm still getting the random click every few starts. It will eventually start but it takes a few minutes.
Any other ideas?

 

not from me

 

i am having same problem with 2018 Titan as the OP . i read on a different forum that there is an ignition/starter relay
in fuse box under hood . nissan part number 25230-79918 . can't locate it right now because truck is in shop for starter
replacement . i am almost positive that the starter won't fix problem.

 

Has anyone tried replacing this relay? I’m going to give it a shot. Can’t hurt at this point

 

I have a 2018 Pro4X…started having the exact same issue over the summer. Battery, starter, and alternator all tested good. I replaced the batter and it went away…until today it happened again. Typically takes about 5 times pushing the start button and a combination of locking/unlocking doors (don’t know if that’s pure coincidence when it does work) then it’ll start.
Very interested if anyone has a fix for this.

 

Same issue on my 2018 Titan V8 / 1N6AA1EJ6JN**

 

I think you are trying a new fix

 

I’ve reached the end of my patience with my 2018 SV. I’ve taken it to the 2 best mechanics I know and they are at a loss also.
Here’s my issue: truck will start fine several different times in a row and everything seems normal. Then the next start will be nothing but a click. The screen comes on and the radio will play, but it will not crank. If I hit the lock and unlock a few times on my remote and then start it, it will eventually start.
When it does start normally the Bluetooth will only connect about half the time. I’ve disconnect and reconnected the Bluetooth to my phone and my wife’s and still get the same issue.
I recently replaced the battery a couple of months ago. For a week or so it started flawlessly. Now it’s back to the same problems as before. Starter and alternator are both testing fine. I’ve replaced both the break switch and the ASCD switch that are both located at the top of the break pedal that have caused similar issues to other Titan owners.
Nothing is helping. If anyone has any suggestions I’d love to hear them.

Have your transmission looked at for a ground loose or needing repair. This happened to me along with a new starter. Hope it helps.

 

I owned an old Suburban that had a similar issue as the one you are having.
This was back when the trucks did not has all the over the top electronics.

It came to the point that I started replace suspected parts.

Low and behold, as soon as I replace the Starter - the problem disappeared.

So, this story being told... If you come down to your last straw in troubleshooting; Try replacing the starter.

This advise and $6.49 cent will get you a cup of coffee at Starbucks, but I wanted to toss my 2 cents worth into the kettle.

 

Titan starter is under intake plenum PITS ,similar symptoms flaky starter after 140k miles on my 07 titan se , new mitsubishi starter starts with no issues for 9 months now.

 

Did you check your grounds?

 

No, not yet