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"Idling Stop unavailable"

2.8K views 37 replies 9 participants last post by  NielichyBandyta  
#1 ·
I've been getting the message "Idle Stop not available" pop up occasionally when I start the car - albeit too briefly to get a photo. I know the experts will tell me to look in the manual but I can assure you I have combed through the section on warnings and notifications and haven't been able to find a description. If you can point me to where to find it that would be helpful.

I'm assuming it means auto Stop/Start is turned off, probably due to low battery capacity as the car frequently stands unused for two or three weeks and it tends not to work after this. Once I've done a decent journey, e.g. a 2-hour return trip, it usually resumes operation.

I'd be grateful if someone can confirm that this is indeed the meaning of the message.
 
#2 ·
Es handelt sich lediglich um eine Warnung, dass die Start-Stopp-Funktion aus irgendeinem Grund nicht aktiviert werden kann. Es ist eine Funktion und kein Fehler, es ist die Arbeit des Steuergeräts. Der Grund könnte der Zustand der Ladung Motortemperatur sein, die Notwendigkeit, die Vakuumpumpe arbeiten zu lassen und was weiß ich von mehr.

Der genaue Grund kann sicherlich im Handbuch nachgelesen werden und nein, kann es nicht !!! Schauen Sie besser ..
 
#4 ·
That is one warning id love to see, I absolutely loathe idle stop / start due to the extra wear it creates on components.

It will be probably due to the start stop battery not having enough charge in it, once it recharges after a decent run it should start working again.
 
#10 ·
That is one warning id love to see, I absolutely loathe idle stop / start due to the extra wear it creates on components
I tend to agree although in an urban environment it should help to reduce the build-up of traffic fumes which I can say from experience are pretty unpleasant. Won't be a problem, though, when we've all switched to EVs :D.

As you probably know it's not possible to permanently disable it but I seem to remember seeing another topic on here discussing devices that can simulate a press of the Disable button when the car is started.
 
#8 ·
It is merely a warning that the start-stop function cannot be activated for some reason. It is a function and not a fault, it is the work of the control unit. The reason could be the state of charge engine temperature, the need to keep the vacuum pump working and whatnot.

The exact reason can certainly be read in the manual and no, it can't !!! Better have a look ...


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And just so you can see that I'm not talking garbage, 5 minutes work .... Page 3-45 of the manual
 
#9 · (Edited)
Thanks @JardaB and @casper46 , I've found it now. In my manual it's on Page 3-41. To be honest the Suzuki Owner's Manual is extremely comprehensive compared with other cars I've owned, but I find that comprehensiveness can make it quite difficult to find a specific topic when I want to look something up quickly, especially as the index isn't nearly so detailed.

Of course I was looking in the index for 'Auto Stop-Start' or just 'Stop-Start' but Suzuki, in their wisdom, call it 'ENG A-Stop' :rolleyes:.

Anyway I see I was right in my original assumption. Thanks to everyone that replied.
 
#12 ·
That suggests the operation of the BMS module is being "modified" so the S/S system fails one or more of the tests listed in the manual entry earlier. My guess - and it is only a guess - is that the BMS module uses a Hall-effect sensor to measure the current and the magnets are interfering with this to fool the system into reporting an incorrect SOC. If so that would change the charging profile and likely impact on battery life so not something I would recommend.
 
#14 ·
What's that all about?
Please read your owner's manual, there is a long list of reasons why or conditions under which, the idle stop might not be available, too many for me to remember, and be aware that these conditions can change dynamically, you can be driving down the street and it's not available at this stop, and a few seconds later, at the next stop, it is - maybe the battery SOC went up by three percent, maybe the engine is now two degrees warmer
 
#16 ·
Well, the only condition that changed dynamically, within a couple of seconds, was shifting into neutral and releasing the clutch and since it's obvious that holding the clutch down prevents it kicking in (since depressing it re-starts the engine) it seems a bit unnecessary to flag the notification for that and in point of fact that's not one of the conditions listed. I should also mention that in the nearly three years since I purchased the car this has only started happening in the last couple of months or so.

It seems that maybe with the battery at a relatively low SOC it's exposing some over-sensitivity and/or bugs in the software.
 
#37 ·
Hi This is Ankit here from India, own a Brezza ZXI - MT, i am experiencing exactly the same scenerio as you mentioned , vehicle is two years old , never saw this happening , but now everytime i apply brake , in gear position clutch depressed , it still gived this error " idyling stop unavailable " though when in neutral position it works fine
 
#18 ·
I never use my start stop,
Driving with mechanical sympathy I like to keep the oil and coolant circulating evenly after recent reports of a few boosterjet heads cracking.
Cracks can be caused by temperature differences and the exhaust valve where cracks have been reported run very hot. Also I have read that BMW recently upgraded their bearing coatings as they have discovered that every stop-start cycle involved a brief metal on metal situation.
Am I being overcautious, or does the engine keep oil and coolant circulating anyway?
there must be some circulation or we'd have turbos cooking constantly.
I would be very happy for someone to correct me on this.
 
#21 ·
I just can't make sense of this system. Sometimes it puts up the message in plain white text, at other times the message accompanied by a large green Stop-Start symbol with a line through it. Today I got home, pulled the handbrake, put it in neutral and when I released the clutch it immediately flashed up the message and green symbol - then the Stop-Start activated!!!

Bonkers!!

I'm fairly sure the overriding reason for the recent appearance of the message is a decline in battery capacity. The vehicle is 6 years old and the battery is probably original. Having said that it still spins over briskly and starts promptly so I don't feel like dumping a serviceable battery. It seems to me this is a bug in the software with not enough hysteresis built into the system. I just wish there was some way of turning off the notification. I don't need it to tell me - if it doesn't activate I already know it's for failing to meet one or more of the thousand-and-one conditions that have to be met. It's not as though it's telling me anything useful - like which conditions it's failed on.
 
#22 ·
Hi Mike, I own a 2018 swift, probably with the same system as yours. It can take a while for the auto stop to become active in winter, was when the heater is on. And likewise in the summer with a/c on, it will work at one set of traffic lights then not at the next, so yea it seems dependent on the charge of the battery. Nothing you don’t already know, but now you know your not the only one! Regards Phil
 
#23 ·
Actually just last week I had a Swift mild hybrid as a courtesy car and that was doing the same, except that it flashed the notification up, auto-stopped the engine then within a second it restarted it. That car was only a year old but as a demonstrator it probably wasn't getting a lot of use.

I just wish I could turn off the notification. It's totally unnecessary. It seems that nowadays designers add lots of these redundant functions just because they can.
 
#24 ·
It seems that nowadays designers add lots of these redundant functions just because they can.
They actually provide quite a bit of useful diagnostic information, but the problem is that owners/operators/drivers either don't actually read them or don't remember what they read - for example, you push the start button and the car doesn't start, we get told it's not recognizing the keyfob, but the message actually says ...

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Right there I know the fob has been recognized because the start system is trying to unlock the steering, it won't unlock the steering (or try to) if it hasn't seen a fob that is authorized to allow the car to be driven.
 
#34 ·
a lot of it is people who are just too lazy to pick up the owner's manual & read it.
Whilst in general I agree with what you're saying I personally find the Suzuki Owners Manual, although impressively comprehensive, quite hard to navigate and in some cases not particularly well written. When this warning first popped up it took me quite a while to find it in the manual.

By the way, I'm also a grumpy old fossil.

If the warning light was off, would you be surprised that the start-stop system is faulty?
No.
 
#36 ·
The Vitara's had a bit more use over the last week or so and stop/start has worked more often, but it's still putting up the warning that it's unavailable then immediately activating. The odd thing is it's 3 years - almost to the day - since we bought the Vitara and it's only started appearing quite recently. I initially put this down to an ageing battery losing capacity as even putting it on charge overnight doesn't make any difference so I thought maybe fitting a new one would cure it. Maybe it would, but since the Swift demonstrator I used exhibited very similar symptoms despite being under 1 year old it now seems to me more likely to be a bug in the software that controls this function.