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Technical Stop start ...... Stopped?

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Technical Stop start ...... Stopped?

Has anyone had their SS engage when it shouldn't have?

Mine has 3 times now, and the 1st 2 times I thought it was me stalling it. It's always within the first 10 mins of driving in the morning, and I've either had to slow down to a stop or pulling away from stopped.

On the other occasions I've done the usual after a stall but I remember being confused as to why the engine still appeared to be running despite the fact I'd apparently stalled it.

This time as I started to move away there was the customary judder and lurch forward where the car feels like it has just stalled, however this time I was looking for it and I could quite clearly see that the SS light came on. It figured out I was putting on revs and not in neutral and promptly turned itself off again and I pulled off like nothing happened. Luckily the guy in the SUV behind me was paying attention so I didn't get a caved in rear end.

Car was new in September and SS works fairly well most of the time but I don't really trust it tbh.
 
Interesting. I've been monitoring all the stop/start comments here for a while because I've been unsure whether my car was acting normally or not. Today the SS system worked; yesterday, in exactly the same circumstances and places, it did not. I mentioned my concerns to the dealer some time ago and they just fobbed me off by saying they'd checked the computer and it had 'failed' to operate on a number of occasions (I think they quoted a number of about 80) because the climate control was on. This doesn't make a lot of sense because when it does seem to operate normally it will function even with the compressor on in mild conditions and, in any case, I rarely use the climate control.

There is another issue I believe may be related. On very hot days last summer (ambient temp 35C to 44C) the car falters just as I start to take off. Power drops right off and I have to push the clutch in and rev the heck out of it before releasing the clutch and (hopefully) moving off. It's a wonder I too haven't been shunted from behind during these episodes. The dealer was very non-committal and, of course, it's very hard to get the car to duplicate this behaviour on demand...

Has anyone experienced anything similar?
 
Piccolo Nero e Bella said:
Interesting. I've been monitoring all the stop/start comments here for a while because I've been unsure whether my car was acting normally or not. Today the SS system worked; yesterday, in exactly the same circumstances and places, it did not. I mentioned my concerns to the dealer some time ago and they just fobbed me off by saying they'd checked the computer and it had 'failed' to operate on a number of occasions (I think they quoted a number of about 80) because the climate control was on. This doesn't make a lot of sense because when it does seem to operate normally it will function even with the compressor on in mild conditions and, in any case, I rarely use the climate control.

There is another issue I believe may be related. On very hot days last summer (ambient temp 35C to 44C) the car falters just as I start to take off. Power drops right off and I have to push the clutch in and rev the heck out of it before releasing the clutch and (hopefully) moving off. It's a wonder I too haven't been shunted from behind during these episodes. The dealer was very non-committal and, of course, it's very hard to get the car to duplicate this behaviour on demand...

Has anyone experienced anything similar?
Click to expand...
at 35-44 is the AC on max? Because low down power is seriously reduced with ac at high power settings.
 
No Ahmett, certainly not. In those conditions I usually roll the top back and set the air for a gentle airflow at face level. AC at max is too noisy. Having said that It may have contributed to the problem but I think the real culprit is the SS.

By the way I only recently discovered, almost by accident, how to get a breeze from the fan without engaging the AC as well. Now I use the AC even less.
 
DBunX said:
On the other occasions I've done the usual after a stall but I remember being confused as to why the engine still appeared to be running despite the fact I'd apparently stalled it.
Click to expand...

If you do stall S/S will still restart the car even if, say, the battery is low and S/S wouldn't normally engage.
 
Hi all. Mine way also playing up after only a few weeks of having the car. Took it back to dealership and they found the sensor underneath the clutch had gone.

They ordered new one and it's now working perfectly.
 
Glad i am not the only one with issues. i have a 2012 fiat 500 1.2 petrol, i have had issues with the alternator belt slipping and squeaking from the start. i have had the belt replaced alternator replaced battery on charge 48hrs and sat for 1 week had all new software and updates and new battery replaced. still no joy. there was never any warning lights come on and its just dead. dealer is having it in again and dont know what to do next! i am at wits end. the cars on finance with fiat and im not impressed that fiat main dealer has not got a clue!!
 
frupi said:
Agree with the points made.

Our TA start/stop is crap too. Wife did a 100 mile round trip the other day and when sat at lights, the S/S will operate for about 20 seconds maximum. It's actually been like this for ages. I've had the battery on the CTEK charger a couple of times and although the battery gets the top up it requires, the S/S will still only operate for 20 or so seconds and then the engine comes back on again. Our previous POP was never like this, the S/S would operate and the engine wouldn't restart until the clutch had been dipped.
Click to expand...

Well I thought I'd do an update. Took the car in for servicing today and amongst the under dash wiring recall and the faulty boot microswitch, both of which they've fixed/replaced, the dealership have agreed with me and concluded that there is a fault on our Stop/Start system. So much so, we have come home without the car as they need to do some investigative work. Something related to the air conditioning, quite what, I'm not sure but they are going to fix it, obviously under warranty.

I've been guilty in the past of grumbling at main dealers, but to be fair this one is being extremely helpful and hopefully they will sort it out quickly.
 
Ok, final update on the Stop/Start. Definitely all fixed, works a treat just like it is supposed to.

The problem in our case, was a faulty heater flap motor which the Fiat dealer replaced. I know it sounds odd, but it had an adverse effect on the Stop/Start system. Basically, when the climate control was on, the S/S wouldn't function properly. When climate control was off, the S/S did work reasonably well. We didn't ever realise we had poor air distribution on the aircon/climate control. Anyway, S/S now works properly all the time, every time, climate control on or off. The battery as it turns out is fine. :)
 
frupi said:
Ok, final update on the Stop/Start. Definitely all fixed, works a treat just like it is supposed to.

The problem in our case, was a faulty heater flap motor which the Fiat dealer replaced. I know it sounds odd, but it had an adverse effect on the Stop/Start system. Basically, when the climate control was on, the S/S wouldn't function properly. When climate control was off, the S/S did work reasonably well. We didn't ever realise we had poor air distribution on the aircon/climate control. Anyway, S/S now works properly all the time, every time, climate control on or off. The battery as it turns out is fine. :)
Click to expand...

Interesting cause. Glad it's all sorted and working as it should now, seems they've had enough issues now to be knowing what causes the various different SS issues :confused: :)
 
Most Easterly Pandas said:
Interesting cause. Glad it's all sorted and working as it should now, seems they've had enough issues now to be knowing what causes the various different SS issues :confused: :)
Click to expand...

Agreed, an interesting cause but one which was only detected through diagnostics. They kept the car overnight because I think they had to order the part in to fix the problem.

I just thought it might be useful to post the remedy as there might be other owners out there with a similiar issue. (y)
 
frupi said:
Agreed, an interesting cause but one which was only detected through diagnostics. They kept the car overnight because I think they had to order the part in to fix the problem.

I just thought it might be useful to post the remedy as there might be other owners out there with a similiar issue. (y)
Click to expand...

Intersting alright, If you had noticed SS acted up when climate was on then you still would probably put it down to a dodgy battery. So did the dodgy flap show up on the actual diagnostics when plugged in?
 
Mercky said:
Intersting alright, If you had noticed SS acted up when climate was on then you still would probably put it down to a dodgy battery. So did the dodgy flap show up on the actual diagnostics when plugged in?
Click to expand...

Yes, correct. The service manager told me the dodgy flap showed up on diagnostics and changing the part remedied the problem.

And I therefore bow to the dealership for sorting the problem out efficiently, especially as it was done under warranty! :D
 
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