[BikeRidingPilotFan]

Honda dealership did the Idle/Stop software update 2 days ago but to be honest with you I wouldn't know if it did anything at all. Part of my startup routine is the disengage that feature. I may give it a try later this week. I do know that the feature (when engaged) seemed excessively abrupt and harsh before the update.

 

[ls973800]

Brought my 2019 Pilot Elite in for the hood latch recall and they told me I also needed this software update, and now the auto stop won't engage at all. Anyone else have this issue and know what the solution is? I had a 35 minute ride home on the the highway so would have thought if the battery was low that would have been enough to recharge it and it would have worked by the time I was near home. Worked flawlessly before this update. Is there a way to check that my VIN should have been included?

My 2019 Touring had pretty much stopped doin any Idle Stop/Start over the past three or four weeks. I was even doing some freeway driving of over 50 miles each way and maybe once or twice the system would work. I checked the battery voltage and found it between 12.3 and 12.7 on different days. Three days ago I charged it fully and then left the charger on maintenance for about a day since I didn't need the car. The Idle Start/Stop is working perfectly now even before the car gets fully warmed up.

Moral of my post is I think I will be needing a new battery soon since this one will be 4 years old at the end of this month. Yours may be on the verge of going bad also. The new update from what I have read takes into consideration the battery condition and yours may be at the tipping point even though it worked BEFORE the update. I can imagine Honda was very conservative as to what voltage the battery had to be at to allow the Idle Stop/Start to function in order to eliminate those cars which were left stranded at traffic lights or where ever when it stopped but would not restart.

I don't plan on doing the update until after I install a new battery (if in fact even then). I am in the minority of those who actually like the feature.

 

[Hp20dah]

I’ve had my vehicle not restart after idle-stop engaged, three times in the past couple months. Got the TSB done today. Battery checked out good, so didn’t replace it. Here’s hoping…

 

[Falx]

I've had issues where it didn't restart, which was pretty scary in the middle of an intersection. ended up installing the idlestopper thingie that automatically turns it off. been working well (although fuel consumption went up).
will get the SW update next week, but will probably keep this thing off anyway...

 

[Puffin]

I had the software update only applied to my '22 Passport and have noticed since that the vehicle is a lot louder. There is a very noticeable rumble now when starting and when driving. Has anyone else experienced this?

 

[Hp20dah]

No.

 

[enisad]

I am confused, is Honda saying that if the software update has been applied and your Idle stop still shuts down the car and it wont start again then go back into the dealership for a valve adjustment? After my software update, the Idle stop no longer engages/works, i recently took my car to a independent garage with a Honda certified technician and he said that replacing the battery sensor has worked in his experience on Acura's.

I also noticed Fuel consumption is up slightly up.

 

[hokiefyd]

I am confused, is Honda saying that if the software update has been applied and your Idle stop still shuts down the car and it wont start again then go back into the dealership for a valve adjustment?

I don't really understand the link between the idle stop issue and valve adjustment, especially since the cars seem to start in park with use of the push button right after the no-crank. Does the idle stop restart while still in drive put an additional load on the system, just enough load that loose or tight valves can cause a no-crank? I guess that's the likely scenario, because the warranty on the valves is extended...I suppose Honda would then perform a valve adjustment on the engine you still experience issues.

After my software update, the Idle stop no longer engages/works, i recently took my car to a independent garage with a Honda certified technician and he said that replacing the battery sensor has worked in his experience on Acura's.

A Honda dealer will have the factory scan tools, and I presume they'd be able to go into the data and see why the idle stop system is not engaging. It sounds like this technician is recommending a sensor based on what he's experienced in the past, but that may or may not fix your car. It seems plausible that it's receiving a signal of a weak battery, which is disabling the idle stop. Is it really a malfunctioning sensor sending that signal, or is the battery truly slightly too low on charge? Again, I presume a Honda scan tool would be able to identify the issue.

 

[zroger73]

I don't really understand the link between the idle stop issue and valve adjustment, especially since the cars seem to start in park with use of the push button right after the no-crank. Does the idle stop restart while still in drive put an additional load on the system, just enough load that loose or tight valves can cause a no-crank? I guess that's the likely scenario, because the warranty on the valves is extended...I suppose Honda would then perform a valve adjustment on the engine you still experience issues.

The TSB for the valve adjustment warranty extension states, "...the vehicle may not restart automatically due to excessive cylinder pressure..."

 

[hokiefyd]

The TSB for the valve adjustment warranty extension states, "...the vehicle may not restart automatically due to excessive cylinder pressure..."

Right. But my understanding is when you put it in park after it doesn't start, and you use the push button to start it, it starts right off and you can drive away. If my understanding is correct, I'm not sure why the idle stop won't start it but the push button will. I would think excessive cylinder pressure would impact either method of starting, and you wouldn't be able to start it at all, right?

 

[zeppelindad]

I've had issues where it didn't restart, which was pretty scary in the middle of an intersection. ended up installing the idlestopper thingie that automatically turns it off. been working well (although fuel consumption went up).
will get the SW update next week, but will probably keep this thing off anyway...

What is the idlestopper thingie? how do I get this?
thanks

 

[hokiefyd]

What is the idlestopper thingie? how do I get this?

There's a sticky thread at the top of this subforum with lots of information and experiences with different devices:

Automatic Auto Idle Stop System set to Off by default...

Check out IDLESTOPPER on Amazon. Found out it via this video: Disclaimer: I haven’t tried it yet but YouTube and Amazon reviews seem positive.

www.piloteers.org

 

[username_1905]

I don't understand why the TSB 23-010 only applies to 2021-22 models... I have a 2019 Pilot Touring and received this letter (view attachment) last week that clearly states that the warranty extension also applies to the 2019 models and mentions "increase in wear to the engine starter motor and an increase in the valve tappet clearance"... Is there another TSB about this?

 

[eps105]

I don't understand why the TSB 23-010 only applies to 2021-22 models... I have a 2019 Pilot Touring and received this letter (view attachment) last week that clearly states that the warranty extension also applies to the 2019 models and mentions "increase in wear to the engine starter motor and an increase in the valve tappet clearance"... Is there another TSB about this?

Here in the US, we got a different letter than the one you attached. The letter I got states "REFERENCE SERVICE BULLETIN #23-009 / #23-010"

Quite simply, 23-009 is for 2016-21 Pilots and 23-010 is for some later 2021 and all 2022 Pilots.

The difference is, 23-009 applies a new starter, starter relay, AND a valve adjustment, while 23-010 only provides for a valve adjustment, which implies that at some point in 2021 Honda implemented the new starters and relays in production.

 

[Hp20dah]

My letter.

 

[Puffin]

Looks like I am another owner who had the software update completed and now the Idle Stop will not engage at all. At first I thought it was simply due to the cold temps (I am Canadian) and the battery not getting fully charged. Pass couple of days though I have been taking the Passport for longer runs and the Idle Stop should have engaged.

Anyone else having this issue take their vehicle back to the dealer and have any resolution?

 

[Peanutofthedog]

I'm in the US and received the letter and it states for 19-22 Passport, 16-22 Pilot, 20-23 Ridgeline.

1 - Honda will update PGM-FI software for free
2 - If still experiencing auto restart problems after entering auto idle stop then Honda my replace starter assembly, starter relays, and adjust valves for free.
3 - If you paid for starter assembly and starter relays for above condition then eligible for reimbursement.

Letter at the end states: REFERENCE SERVICE BULLETIN #23-008 / #23-009 / #23-010.

 

[Kalimdor]

I had the same problem. AutoStop and not auto restart at traffic lights. I used to turnoff this feature whever I get in the car. Sometimes when I forget to turn off and the car stops at anytime, that makes me really nervous and I try to turn off Auto Stop/Start at that time and pray for this to help to restart the engine.

I got two mails from Honda between 2 day. First one is about free part replacement and valve adjustment and warranty extention ans the second email is about software update before part replacement or valve adjustment. I took the car to the service yesterday. They updated the software. Since then Auto Stop/Start doesn't work. So I don't know if it works or not. I connected battery maintainer last night and I'll give it a try like some folks did.

I disconnected VCM disabler before I took the car to the service but they just updated the software. Whenever I remove the plastic cover to reach out to battery, I drop one of the clips into the engine bay. It happened again, and this time I just use hot glue gun to prevent them to drop next time easily.

I'll update after I test Auto Stop/Start.

 

[Tinkerbell11]

I found this today while googling as I brought my 2021 Honda Pilot with 26k on odometer in for an oil change and our state safety inspection. While there, the dealer did this software update, which I was not even aware of. After that, they did the safety inspection and it "failed" much to my shock - have never had a car fail. They said it was because of the software update and if I drive 100 miles, it should reset it so it will pass. I am extremely upset about this. Any thoughts? Thank you

 

[Cbayman]

Sounds like the readiness monitors aren’t complete. The SW update reset the PCM and now the monitors need to complete. It could several drive cycles before the monitors are set.