[Tinkerbell11]

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.

Thank you very much. I will hold off on going back for the reinspection for a little while because the state gives some time but really upsetting to drive with a "rejection" sticker on a 2 year old car. After reading other comments, I am going to go test drive to see if the idle stop is even working... something I always disengage anyway because I can't stand the feature.

 

[Kalimdor]

Update: I charded and maintained the battery for 1 day. And idle stop still doesn't work. VCM disabler is active. I am not sure if anything is wrong with my car. I'm going to drive 1-2 weeks and if nothing change then I'll make an service appointment for idle stop issue again.

 

[Peanutofthedog]

Update: I charded and maintained the battery for 1 day. And idle stop still doesn't work. VCM disabler is active. I am not sure if anything is wrong with my car. I'm going to drive 1-2 weeks and if nothing change then I'll make an service appointment for idle stop issue again.

In case this wasn't noted, I believe in the owner's manual the Idle Stop will not activate if you have the Auto Climate control on or AC on max.

 

[JonBaker00]

Got my 2016 Touring in for the update this morning. I’ll be glad not to constantly worry about when my car is going to die at a light but it seems to me if Honda is making a change that potentially affects fuel economy then they have some explaining to do and potentially owe owners some money. I know there are a few class action suits in the works. I wonder how this “fix” impacts those.

 

[Honkerbonker]

Just had my Auto Idle Stop Software updated today on my 21 Pilot for the recall. The paperwork indicates TSB 23-08 was done. Interesting that when I was driving it home for 30 mins on a 60 degree day through many stop lights, the auto idle stop system did not engage like it normally would have. (Was not in sport mode or AC max. Also the auto idle stop button was not touched.) I'll wait to see if the monitors need some more time / data to engage it. Or maybe my battery needs charged. I am interested to know what changes in the software parameters / conditions were changed as part of this update. Anyone know?

 

[ls973800]

Not sure if this is true since I heard/read it on the internet. California will NOT allow any owner of the Honda vehicles which are affected by this update to register their vehicles UNLESS the update has been done! The dealership will provide the owner with a paper showing the work was done and also notify the BMV of the work having been done. Linked to the video I saw this at.

Stop/Start Required to be updated in CA

 

[Kalimdor]

In case this wasn't noted, I believe in the owner's manual the Idle Stop will not activate if you have the Auto Climate control on or AC on max.

Unfortunatelly, even I drove the car with the ac off, Idle stop hasn't been engaged. It looks like, I'll make an appointment again soon.

 

[Tinkerbell11]

Hi has your car issue been resolved? My 2021 Pilot subsequently failed multiple inspections for emissions that were done during the software update and the dealership can't resolve it. They just keep telling me to drive the car and it will work itself out; that all the data was wiped out during the update. This doesn't make sense to me because when a brand new car is inspected, there is no "data" and passes just fine.

 

[Cbayman]

Sounds like the monitors are still not complete. The status of the readiness monitors can be determined as follows:

1. Without pressing the brake pedal, press the start button 2x. This will turn ON the ignition.
2. The gauge cluster lights will illuminate. Watch the Check Engine Light (CEL).
3. The CEL will turn OFF in about 10 secs. If the CEL blinks 5x before turning OFF the readiness monitors are not complete. If the CEL goes OFF without blinking the monitors are complete and the vehicle should pass.
4. Press the start button 1x to turn OFF the ignition.

There are several readiness monitors and this procedure will indicate incomplete status of at least one of these monitors. Generally, states require the monitors be complete before the vehicle can be tested.

Assuming the CEL flashed, an OBD2 scanner is required to determine which monitors are incomplete. This is the best way to determine how to get the car ready for testing. However, it’s fairly common that the EGR monitor is the only monitor that is incomplete. This was the case with my Pilot after 3 yrs and ~25K miles. The EGR monitor can be set by manually selecting a lower gear and driving with the engine speed @ ~ 6500 RPM for 10 secs. This worked for my 6 speed Pilot by selecting L and driving @~60 MPH for 10 secs. Some have reported that full throttle acceleration with the transmission in D also will successfully complete the EGR monitor. After performing this procedure, repeat the CEL procedure to check status.
This information (less the EGR monitor set procedure) is referenced on page 719 of the OM.

https://techinfo.honda.com/rjanisis/pubs/OM/AH/ATG72121OM/enu/ATG72121OM.PDF#page721

 

[Tinkerbell11]

Sounds like the monitors are still not complete. The status of the readiness monitors can be determined as follows:

1. Without pressing the brake pedal, press the start button 2x. This will turn ON the ignition.
2. The gauge cluster lights will illuminate. Watch the Check Engine Light (CEL).
3. The CEL will turn OFF in about 10 secs. If the CEL blinks 5x before turning OFF the readiness monitors are not complete. If the CEL goes OFF without blinking the monitors are complete and the vehicle should pass.
4. Press the start button 1x to turn OFF the ignition.

There are several readiness monitors and this procedure will indicate incomplete status of at least one of these monitors. Generally, states require the monitors be complete before the vehicle can be tested.

Assuming the CEL flashed, an OBD2 scanner is required to determine which monitors are incomplete. This is the best way to determine how to get the car ready for testing. However, it’s fairly common that the EGR monitor is the only monitor that is incomplete. This was the case with my Pilot after 3 yrs and ~25K miles. The EGR monitor can be set by manually selecting a lower gear and driving with the engine speed @ ~ 6500 RPM for 10 secs. This worked for my 6 speed Pilot by selecting L and driving @~60 MPH for 10 secs. Some have reported that full throttle acceleration with the transmission in D also will successfully complete the EGR monitor. After performing this procedure, repeat the CEL procedure to check status.
This information (less the EGR monitor set procedure) is referenced on page 719 of the OM.

https://techinfo.honda.com/rjanisis/pubs/OM/AH/ATG72121OM/enu/ATG72121OM.PDF#page721

Thank you SO much!

 

[RHM Morris]

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?

Yes, we had the update done a few days ago and the idle stop never kicks in. My wife also insists the blind spot warning no longer works. I am going to try and verify that today.

 

[ls973800]

Yes, we had the update done a few days ago and the idle stop never kicks in. My wife also insists the blind spot warning no longer works. I am going to try and verify that today.

Not sure what year you have but there should be a setting to turn the Blind Spot warnings on or off including on, on with beeping, or on with just visual. Check to make sure that didn't get turned off during the update. I am not going to have the update done because of hearing that the feature basically doesn't work anymore. I like it and want to keep it.

 

[RHM Morris]

Not sure what year you have but there should be a setting to turn the Blind Spot warnings on or off including on, on with beeping, or on with just visual. Check to make sure that didn't get turned off during the update. I am not going to have the update done because of hearing that the feature basically doesn't work anymore. I like it and want to keep it.

My wife now says the cross traffic feature is working. Shrug. The update works. If your vehicle doesn't auto stop, then you never have a problem restarting it. For us the auto stop was always finicky. You never knew when it would work and when it wouldn't. We never had a problem with the restart. My wife drives with the economy mode engaged. We never use max A/C.

It sounds like Honda has a design problem with the valves and unsurprisingly doesn't want to fix that, so there shortcut is to prevent the auto stop from engaging as often. In our case they have effectively disabled the auto stop. Annoying, but better than being at an intersection or stopped in rush hour traffic and unable to restart the van.

What I don't understand is why California wants an auto stop/start that stops the engine less often.

 

[Tinkerbell11]

Not sure what year you have but there should be a setting to turn the Blind Spot warnings on or off including on, on with beeping, or on with just visual. Check to make sure that didn't get turned off during the update. I am not going to have the update done because of hearing that the feature basically doesn't work anymore. I like it and want to keep it.

I would not recommend it just based on the experience I have had.

 

[hokiefyd]

What I don't understand is why California wants an auto stop/start that stops the engine less often.

It's not that California doesn't want the Auto Engine Idle Stop (AEIS) to work correctly or less often...rather, they want to ensure that cars on the road are up to date regarding recalls and major product updates. This is a safety issue more than it is an emissions issue.

Regarding cars on which the AEIS basically no longer works, I have to think there's an algorithm based on age or miles built-in to the software. We had this product update performed on our 2022 with about 14k miles at the time, and I can't tell any difference. I almost always disable the system to start with, but I drove around with it enabled for some time after the software update to see if it'd engage less, but it doesn't seem to. Every time I brought the car to a stop (after it was warmed up), it'd cut the engine. Like...every time.

But our car is pretty new still. If we drove the car using the AEIS more, and started accumulating more miles, I wonder if it would start to taper the operation some. In other words, I wonder if there's some "glideslope" built in to the software where, if the engine has fewer than 20k miles, then 100% of the AEIS eligible situations results in a stopped engine...and then if the engine has between 20k and 30k miles, then only 80% of the situations results in a stopped engine...30k-40k miles = 60% engagement...40k-50k miles = 50% engagement...etc.

I still don't understand why the valve adjustment impacts only the AEIS, and not push button starts. Why can the AEIS not restart the car, but the owner can when put in P and the push button is used? The only thing I can reckon is the AEIS uses some sort of "low power" start mode where it doesn't give the starter full voltage or current when it tries to start the engine. I don't know why it'd do that if that's really what it's doing. Is it to save battery life for multiple restarts, over and over again? I understand, mechanically, how valve clearance could impact the startability of the engine, but I don't understand why this impacts only the AEIS.

 

[markrief]

We got the auto idle stop software update on our 2016 Pilot Touring last week, and the stop has not engaged since. My wife always disabled it anyway, so we're not complaining. BTW I had previously experienced the failure to restart twice, so I insisted on the update.

 

[PilotSULU]

TSB 23-008 Product Update: PGM-FI Idle Stop Software Update (2016-2022)

BACKGROUND
Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.

CUSTOMER NOTIFICATION
Owners of affected vehicles will be sent a notification of this product update. Do an iN VIN status inquiry to verify eligibility. Some vehicles affected by this campaign may be in your new or used vehicle inventory. Repair these vehicles before they are sold.

CORRECTIVE ACTION
Update the PGM-FI Software. NOTE: The software update will decrease the Idle Stop operating range. As a result, the customer may notice reduced idle stop engagement when their vehicle’s battery is approaching the end of its useful life.

TSB 23-010 Warranty Extension: Engine Does Not Auto Restart After Entering Auto Idle Stop (2021-2022)

BACKGROUND
Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-008 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Honda is extending the warranty coverage for valve adjustment to 10 years from the original date of purchase with no mileage limitation.

CUSTOMER NOTIFICATION
Owners of affected vehicles will be sent a notification of this campaign. Do an iN VIN status inquiry to verify eligibility.

CORRECTIVE ACTION
Adjust the valves.

Does not download. Had to get elsewhere. Had car updated today. Now does not auto stop at all.

 

[cklor207]

Took my 2016 pilot in for the recall update. after the update while driving off the lot i notices that even when i'm at a complete stop the stop idle doesn't come on. seems to me it's as if the option has been completely disable. drove it home with frequent stop and still it doesn't come on. is this something someone else is experiencing or is it isolated to mine? i feel that the option is completely disabled and there's no indication anywhere. also the idle off button is rendered useless.

 

[Inconcievable_Turbo_Squid]

I have quite a few modifications and customizations done on my 2016 Touring AWD, including a S-VCM installed as of early this month. I was slightly concerned after I got this update done that the idle stop feature just stopped working entirely (as of this week). Last time I noticed that happening in early 2022 it was my battery going out, so initially I thought maybe my S-VCM was the culprit. I’m part of the crowd that does not like this feature, and I know there are products that are offered to basically flip the switch so the vehicle will always default to idle stop off. Now I don’t have to spend $ to delete it, and I don’t have that annoying orange light on my dash. Seems like a kind of cheap fix and will undoubtedly affect the average fuel economy of these vehicles (although mildly). However I hated that feature and I didn’t buy this car for its stellar fuel economy, besides that I’ve got mine outfitted to where I don’t usually get more than 17-18mpg city anyways (lift, oversized A/T tires, and I’ve disable the vcm). It’s a good sign that I’m not the only one experiencing this. IMO this is probably going to benefit the long term reliability of these cars AND we get a free warranty extension on starter, relays, and free valve adjustment. If you have a 2016-2020 I suggest you get yourself a 950cca (or more) AGM battery, it actually allowed my sound and fan to stay on fully when the car auto starts back up. Walking into the dealer I heard a clear difference in the sound the starter makes on crank between my ‘16 and the ‘22 that was being taken for a test drive. I believe it’s accurate that they swapped over to a new starter setup in ~2021.

 

[Producer]

Took my 2016 pilot in for the recall update. after the update while driving off the lot i notices that even when i'm at a complete stop the stop idle doesn't come on. seems to me it's as if the option has been completely disable. drove it home with frequent stop and still it doesn't come on. is this something someone else is experiencing or is it isolated to mine? i feel that the option is completely disabled and there's no indication anywhere. also the idle off button is rendered useless.

I found the same thing after my update. I even asked the technician at honda and he said, oh, it only engages when parameters are met. What are the Parameters, he had no clue