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Stop start stopped working

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Old Aug 15th, 2019, 20:25   #91
gaby
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Originally Posted by Fursty Ferret View Post
It won't do any harm whatsoever. The starter is oversized to cope, an additional support battery is fitted, and the engine stops in the correct location to fire immediately.
How do you think that the addtional battery prevents harm/wear to the sart system?
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Old Aug 15th, 2019, 20:50   #92
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How do you think that the addtional battery prevents harm/wear to the sart system?
of course , The support battery supplies the car's system when stopped to take the load off the main battery which will then do the restart . There have been no problems with the stop/start starter motor in the last 10 years since it was introduced .
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Old Aug 16th, 2019, 08:59   #93
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of course , The support battery supplies the car's system when stopped to take the load off the main battery which will then do the restart . There have been no problems with the stop/start starter motor in the last 10 years since it was introduced .
I know what the function of the support battery is.
The question was if/how it contributes to preventing wear to the starter.
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Old Aug 16th, 2019, 10:54   #94
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I know what the function of the support battery is.
The question was if/how it contributes to preventing wear to the starter.
well it will make sure there is more power available from the main battery for the restart .. The starter motor on Stop start cars is engineered more robustly too..
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Old Dec 28th, 2019, 16:26   #95
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Hi all, as a new joiner to this excellent forum, I've read the extensive entries on the S/S topic, and I can add my own experiences.
My 68 plate V60 T5 (auto) (owned for 2 months) is completely unpredictable as to when S/S is going to function or not. At one point I thought it was the use of the sportkey that somehow disabled S/S, but subsequent tests disproved that.
I don't have active bending lights, so that's not the cause.
My journeys to date have been very mixed (between 5 miles to 150), but no correspondence between this and SS function.

Like some others, I'm undecided as to whether it's important enough for me to follow up. I don't do large amounts of city driving, and the prospect of engaging with my local Volvo service (good though they are tbh) for something that's not vital doesn't thrill me.

Any other suggestions always welcome though. (PS, car is very nice otherwise!)
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Old Dec 28th, 2019, 16:40   #96
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Originally Posted by hardcad View Post
Hi all, as a new joiner to this excellent forum, I've read the extensive entries on the S/S topic, and I can add my own experiences.
My 68 plate V60 T5 (auto) (owned for 2 months) is completely unpredictable as to when S/S is going to function or not. At one point I thought it was the use of the sportkey that somehow disabled S/S, but subsequent tests disproved that.
I don't have active bending lights, so that's not the cause.
My journeys to date have been very mixed (between 5 miles to 150), but no correspondence between this and SS function.

Like some others, I'm undecided as to whether it's important enough for me to follow up. I don't do large amounts of city driving, and the prospect of engaging with my local Volvo service (good though they are tbh) for something that's not vital doesn't thrill me.

Any other suggestions always welcome though. (PS, car is very nice otherwise!)
have you read your handbook ? Have you ever had a "Low battery power " message ?


The engine does not auto-stop in the following
cases:
• The car has not reached approx. 10 km/h
(6 mph) after starting.
• After a number of repeated auto stops,
speed must again exceed approx. 10 km/h
(6 mph) before the next auto stop.
• The driver has unfastened the seatbelt.
• The capacity of the starter battery is below
the minimum permissible level.
• The engine is not at normal operating temperature.
• The ambient temperature is under -5 °C (23
°F) or above approx. 30 °C (86 °F).
• the windscreen's electric heating is activated.
• The environment in the passenger compartment
deviates from the set values.
• the car is reversed.
• The starter battery's temperature is below or
above the permitted limit values.
• The driver makes sweeping steering wheel
movements.
• The road is very steep.
• The bonnet is opened.
• When driving at high altitudes when the
engine has not reached operating temperature.
• The ABS system has been activated.
• In the event of heavy braking (even without
the ABS system having been activated).
• Many starts during a short period of time
have activated the starter motor's thermal
protection.
• The exhaust system's particulate filter is full5.
• A trailer is connected electrically to the car’s
electrical system.
• The gearbox is not at normal operating temperature.
• The gear selector is in M (±) position
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Old Dec 28th, 2019, 16:55   #97
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Yes, read all those, and no discernible pattern or problem.

Most recent trip was last night, when SS worked on the journey from Warwick to Loughborough (50 miles or so), but NOT on the way back, later the same evening!
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Old Dec 28th, 2019, 16:58   #98
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Originally Posted by hardcad View Post
Yes, read all those, and no discernible pattern or problem.

Most recent trip was last night, when SS worked on the journey from Warwick to Loughborough (50 miles or so), but NOT on the way back, later the same evening!
maybe the particle filter was regenerating , at least it IS operational ... It is when it NEVER works there may be a problem ..
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Old Dec 28th, 2019, 17:35   #99
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Just noticed one of the SS conditions above that I had missed earlier..... "the driver makes sweeping steering wheel movements". Any idea what this actually means? And any speculation as to why it causes SS to stop working?
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Old Dec 28th, 2019, 17:53   #100
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Quote:
Originally Posted by hardcad View Post
Just noticed one of the SS conditions above that I had missed earlier..... "the driver makes sweeping steering wheel movements". Any idea what this actually means? And any speculation as to why it causes SS to stop working?
well if you are on a country lane i suppose or going around a racing circuit . The swedes must have a logical reason ..
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