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Old 08-11-2019   #16
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Re: Start/Stop Not Working With Correct New Battery

Mine didnít work at all when I got the car got a new battery .... still didnít work only if I stalled but over the last few days itís worked every time!! I think it needs to get some miles in before it kicks in again or maybe just my car .....
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Old 08-11-2019   #17
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Re: Start/Stop Not Working With Correct New Battery

S/S will not stop the engine if the car has not exceeded 10kph or thereabouts. Meant to prevent it continually stopping in creeping traffic, so moving in the driveway will not usually trigger it.
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Last edited by Piccolo Nero e Bella; 08-11-2019 at 22:02.
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Old 08-11-2019   #18
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Re: Start/Stop Not Working With Correct New Battery

Quote Originally Posted by Baglady1990 View Post
Mine didnít work at all when I got the car got a new battery .... still didnít work only if I stalled but over the last few days itís worked every time!! I think it needs to get some miles in before it kicks in again or maybe just my car .....
It's often been said in this forum that the S/S needs time to 'learn' the parameters of a new battery. I haven't experienced this; after both battery replacements my S/S has worked immediately. On the last replacement an auxiliary power supply was plugged into the OBD port so perhaps the S/S didn't 'know' the battery was changed. If power was completely removed for a period it might wipe the data and require it to re-learn.


My S/S has always worked perfectly so I'm not going to tempt fate by experimenting!
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Old 28-11-2019   #19
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Re: Start/Stop Not Working With Correct New Battery

No I don't.

It doesn't work in any situation, even with the weather being a bit warmer recently. Even with all the gadgets off and after driving for 70 miles every day. Very odd.
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Old 28-11-2019   #20
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Re: Start/Stop Not Working With Correct New Battery

Iíve replaced my battery with the correct S/S one it took about a week to start working properly & I do very little miles!! I have to say though it doesnít work all the time
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Old 28-11-2019   #21
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Re: Start/Stop Not Working With Correct New Battery

I don't have S/S on the Fiat but I do on my Vauxhall. I recently had the same thing and the dealer reckons the battery has to be connected for four hours for the car to relearn the battery (I don't understand it but it's been fine since). Mine won't work if certain things such as windscreen demister is switched on, it's not up to a reasonable temperature, the aircon is on, etc
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Old 29-11-2019   #22
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Re: Start/Stop Not Working With Correct New Battery

Out of the 48 Fiat 500s I have owned, very few of them have had stop start working all the time. Itís a rubbish system which has so many variables for it to work itís a waste of time.
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Old 29-11-2019   #23
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Re: Start/Stop Not Working With Correct New Battery

On Mazda's the ss is disabled if you have screen demist position selected rather than auto .
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Old 30-11-2019   #24
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Re: Start/Stop Not Working With Correct New Battery

For people saying itís a rubbish system, is it?

A rubbish system would be one that fails to start the engine.

Just remember that a new battery might have been sitting on the shelf for weeks or months discharging gently and wonít be fully charged.

Secondly there are a lot of reasons why a car wonít Start Stop. My BMW isnít start stopping at the moment like it normally would on my 50 mile commute to work, cold will play a massive role in all of this.
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Old 30-11-2019   #25
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Re: Start/Stop Not Working With Correct New Battery

Quote Originally Posted by 306maxi View Post
For people saying it’s a rubbish system, is it?
I'd prefer to say it's a rather crude system which depends on the correct functioning of a number of cheaply made sensors which quite often don't work properly. At least the system is 'fail safe' in so far as it (usually) just stops working if anything is out of limits.

There will be exceptions, most notably for those doing principally urban driving in heavy stop/start traffic, but most folks will never see a financial return on the extra cost and complexity; the extra cost in more frequent replacement of the (expensive) battery will outweigh the fuel savings. From the admittedly selfish perspective of an individual owner, I'd agree with those who say the hassle and expense of trying to keep 500 the S/S system working properly probably isn't worth the candle.

The environmental benefit to the population as a whole of cutting city noise and pollution is another matter; there are sound ecological arguments why S/S should be mandatory on all vehicles in highly polluted cities.

There are other marques with S/S systems that are both better engineered, and better implemented.

And if you know you're going to be stopped for a significant length of time, then regardless of whether you've got S/S, or if it's working, you can always just turn off the engine.
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Last edited by jrkitching; 30-11-2019 at 12:41.
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Old 26-12-2019   #26
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Re: Start/Stop Not Working With Correct New Battery

I hate Stop/Start but I love the system on my 2012 JTD. It's the only S/S system I've come across that doesn't reset every time I start the engine, it just stays disabled.
On another subject, I also love the fact that Fiat have done away with the sidelights, completely pointless with DRLs, in fact pointless in any case.
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Old 27-12-2019   #27
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Quote Originally Posted by Garrett500 View Post
I also love the fact that Fiat have done away with the sidelights, completely pointless with DRLs, in fact pointless in any case.
Unless you want to leave the car parked with the lights on, which I do say going to the pizza shop.
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Old 27-12-2019   #28
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Quote Originally Posted by John202020 View Post
Unless you want to leave the car parked with the lights on, which I do say going to the pizza shop.
Surely if you park in a safe manner you wouldn't need to leave the lights on?
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Old 27-12-2019   #29
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Quote Originally Posted by Garrett500 View Post
Surely if you park in a safe manner you wouldn't need to leave the lights on?
True, but I'll park the car in the supermarket car park and do the same sometimes
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Old 27-12-2019   #30
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Quote Originally Posted by Garrett500 View Post
Surely if you park in a safe manner you wouldn't need to leave the lights on?
Legal requirement in some countries..
The car isnt built for the UK
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