securityguy

securityguy

Not sure I would word it as "pretty important". Yes, it will save fuel but at what other expense to the starter and other mechanical components? I, personally, have it on my Audi and clearly the RDX. I disabled it on my Audi via an ECU coding change and wish I could do the same on the RDX. I HATE it and, since I am not concerned about how much fuel I use (we all should be putting 91-93 octane in our cars anyway) since cost really isn't a factor, I would prefer it OFF. A company made a device to do this for certain GM and other vehicles...hopefully one will be developed for our vehicles.

https://www.smartstopstart.com/chevy...-products.html

kurtatx

The Auto Start/Stop feature is designed to be started and stopped multiple times via a separate mechanism from the actual starter on the car. Your concern is moot.

securityguy

You may feel the concern is moot but that doesn’t make up for the fact that most folks hate it. At least Acura let’s you turn it off. Many other manufacturers do not.

MI-RDX

Not a fact, just assumption/opinion/speculation.

Burger Steak & Eggs

I don't mind it but the Acura version needs a bit more refining, needs to me smoother, quicker and less obtrusive. When I know I need to get away from an intersection quickly due to an impeding lane change, bottleneck etc, I find myself turning it off. Shouldn't need to do that IMO.

securityguy

Really??? This is your reply???

MI-RDX

Yep.

securityguy

You're a real piece of work.....

MI-RDX

Just so you know where I'm coming from I've edited your original post to make it more accurate.

Madd Dog

ednigma

So you're saying that the 2019RDX has a second auxiliary starter? I don't think this is correct. All the cars with auto stop/start that I am familiar with use a heavy duty starter with AGM battery technology. Not only is there extra wear and tear on the albeit heavy duty starter, but there is also the question of startup wear to the oil lubricated reciprocating parts of the engine (pistons, crankshaft bearing, cams, etc). What about replacement costs for the AGM battery and the heavy duty starter. Maybe not a big deal, or maybe it is.

russianDude

MI-RDX

My understanding of how S/S is 'typically' implemented is that one cylinder is always stopped at or near TDC where ignition will take place. Some (a lot?) of the force needed to restart comes from the spark ignition with just a 'bump' by the starter. The process is considerably different than a normal start of the engine.

Many of the friction surfaces have been re-engineered to reduce wear ( ). Improved oil formulation has allowed residual lubrication, and oil runoff from the lubricated components is relatively minimal during the short time the engine is off so there's less to be concerned about on that front compared to start up wear of a cold engine. Here's just one of many articles on the subject - https://autoweek.com/article/technol...oweek-explains

Now whether or not all this works and saves gas as intended is a totally different subject.

The implementation of auto S/S on hybrid vehicles is totally different which may be where the 'second starter' comes from.

KeithL

ednigma

My feelings also. WRT the TDC piston firing, I know that Mazda touts that as a feature of their SkyActiv system, but they say that it provides for a near instantaneous restart (the fastest in the industry according to Mazda). Maybe Acura does it too, but I would think that it would be highlighted. Hardened wear surfaces are fairly standard with the switch to thinner fuel saving oil and extended oil change intervals. Fact of the matter is that their is more wear and tear with ASS than without, even with these measures.
I know that BMW used to allow you to set the ASS to remember the last position in its iDrive control, then you had to request the service dept to program it to remember it, now, the service dept won't do it but some third parties will code it for you for a nominal cost (sometimes the procedure is leaked on the web, but you typically have to buy an app with the coding). But as been mentioned before, the EPA is cracking down on disabling it with their EPA CAFE credits and regulation.

kurtatx

All of you are entitled to be wrong but understand you are, in fact, wrong. These engines are designed to start and stop. If you idle your engine for longer than 7 seconds with a four cylinder engine, you're burning money. There is no advantage otherwise. The stress on the engine is zero.

ednigma

I'm participating in a discussion adding information along with my opinion and you say that I'm entitled to be wrong and I need to understand that I am in fact wrong --ooohh how clever, I see what you did there. How condescending. You are correct that the engines are designed to stop/start, but since you want to be pedantic about it, the stress on the engine is not zero, it may be small, but it is not zero.

Madd Dog

billyt1963

Just an update on my Auto Idle Stop (AIS) problem. Some of you may remember that my AIS has not worked since I had a "limp mode" incident a few weeks ago. Well tonight, it started working again. Not sure what I did, but this is what I did right before it started working.

I was in stop-and -go traffic and was going to try Low Speed Follow. As luck would have it, the vehicle in front of me put on their brakes right was I was starting the cruise control (<40 MPH), so I hit my brake and cancelled the cruise. The next red light the AIS engaged, and has worked ever since. Not sure if the two things are related, but.....

Something I learned while trying to figure out what was wrong is a potential way to stop AIS from working. I saw a video where a person had a towing package installed (not an RDX) and they inserted a test device on the light connector. Since the vehicle thought it was towing a trailer, it shut off AIS.

Just passing along knowledge I have picked up over the last couple of days.

Billy

GaHokie

Very interesting on the test device. Maybe we can find one.

GaHokie

Search for: "trailer electrical connector test device" on Amazon and you find several test devices that are well rated and inexpensive. I ordered one on Prime and will give it a good test.

kurtatx

Despite what you have been lead to believe, it is certainly possible to have wrong opinions. You have one.

And engine wear is negligible.

ednigma

I'm very sorry that you have such a fragile ego that you feel the incessant need to be right and tell others that even their opinions are wrong. I humbly apologize for all of my obviously incorrect opinions.

kurtatx

I don't want you misleading any bystanders.

MI-RDX

The auto idle stop on my RDX has been working as one would expect since the day I got the vehicle.

Today I was out and about making at least a half dozen different trips and on each one I would get the message "Idle Stop Not Available" or whatever the exact wording is. I know it was not because of a low battery just because of the amount of driving I was doing.

After getting home I cracked open the manual and one of the conditions that will disable it is if the climate control system is on (it was) and the humidity in the vehicle is high (it was). Temp was set at 69 and the outside temp was 67 with humidity at 85% according to my home weather station. I'm guessing that because the interior and exterior temps were so close the CC system didn't run enough to lower the humidity in the RDX so it stayed high and kept the AIS from activating.

Just an FYI in case anyone else notices this and ends up scratching their head like I was.

GaHokie

I ordered a Unified Marine Trailer Wiring Circuit Tester from Amazon for under $4.00. Plugged it in to the wiring connector and it made no difference in the functionality of the AIS. One reviewer on Amazon mentioned that it disabled the AIS on a Ford F150. Not a good idea to use this tester on the 2019 RDX.

billyt1963

Andrea Lynn

I have an RDX with under 800 miles. It stopped working. no rhyme or reason. i was actually going to call today. Not that I rely on it but...if this isnt working at under 800miles....what else is going to stop working.

resacu

For anyone who wants to permanently disable auto idle stop, take a look at the postings by UKBob at
https://www.cargurus.com/Cars/Discussion-ds980464
He describes the idea of disconnecting the battery state of charge (SOC) sensor from the negative end of the battery. Apparently this disables auto idle stop in many cars. I have not seen a report indicating that this works on Acuras. However, it seems very likely to work.

DriverOne

This retard made an account so he could spam post this eight times across multiple threads. He must be this UKBob's gay lover or something.

NooYawkuh

gtssenior

To me this just is not a big deal having to press the auto start/stop button each time at startup if you do not want it engaged. It is known as forming a habit. You have to select drive or reverse each time too. The way these cars are designed these days with all of the software intricacies, making an in the home garage modification to the wiring is just asking for an unintended consequence to bite you even if it were to work.

Madd Dog

Yeah, what about that having to “select reverse” all the time? With all the cameras and radars showing a garage in front of the car, shouldn’t it just know I need to back up?