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718 Start / Stop Issues

Gazoak

Gazoak

Member
I would definitely consult the OPC as I don't believe it should activate whilst the car is moving, albeit at 2-3mph . Mine is a 981 and on the odd occassion I forget to disable it, the car doesn't cut out until it is at a standstill. If you drive the car in sport, it will automatically be disabled.

However, I hate the function and believe long term it will have a negative effect on the mechanics of the vehicle. I also can't see how it saves fuel, particularly if you are stopped momentarily at a junction. I also believe there is a safety issue with it as when the car fires up again there is a moments delay which could have implications when exiting a junction. All our cars have it and I disable it on them all.

Good luck with a resolution.

 
oneblacktree said:
Hi all,

From new I’ve been unhappy with the start stop function on my 2022MY 718 Cayman. The car engine shuts down at 2/3mph with the car still moving. It’s highly annoying and no other Porsches I’ve owned did this. I know you can just turn it off manually every time you get in, but that isn’t my point. It’s cuts in too early sometimes at times When you are not actually stopping, say manoeuvring.

start stop feature is a function to save fuel, not a bad thing with the price of premium fuel today.

I’m trying to understand if my particular vehicle has an issue, maybe it’s set too sensitive or is this the same on other 718’s? Before I take it 8th the OPC.

Does anybody else feel the start stop cuts in too early?
Click to expand...

I would have said no, until yesterday when I noticed the stop start activated when I hadn't quite come to a stop. something to keep an eye on. I rarely drive with it activated, as I switch to sport mode as soon as the oil has got above 100° (except on motorways). I do use when likely to be stop at traffic lights, doing my bit for the environment!

 
The start/stop acticates on my 718 Cayman before it's come to a stop so I'd say it's normal behavior. I also have a MINI Clubman JCW and that does the same thing.

When I'm making a slow manoeuvre, or about to park, I deactivate the function so the engine doesn't cut out and instantly restart if I'm moving at a slow speed.

 
Hi all,

From new I’ve been unhappy with the start stop function on my 2022MY 718 Cayman. The car engine shuts down at 2/3mph with the car still moving. It’s highly annoying and no other Porsches I’ve owned did this. I know you can just turn it off manually every time you get in, but that isn’t my point. It’s cuts in too early sometimes at times When you are not actually stopping, say manoeuvring.


start stop feature is a function to save fuel, not a bad thing with the price of premium fuel today.

I’m trying to understand if my particular vehicle has an issue, maybe it’s set too sensitive or is this the same on other 718’s? Before I take it 8th the OPC.

Does anybody else feel the start stop cuts in too early?

 
My MY18 (I leave the function on all of the time) only cuts out when I'm stopped. Given that it also effects the steering assistance when the engine stops this must be dangerous. My 981 also didn't cut out until I was fully stopped.

As a "by the way" did you know that when the engine cuts out at say a junction that if you give the steering wheel a slight pull on either lock he engine will restart?

 
It sounds as though you’re not alone Jason! It would be worth contacting your dealer to ask if the stop/start sensitivity can be turned-down a notch via PIWIS.

Regarding Graham’s comment about steering assistance, I think you’ll find that the EPAS is active as long as the ignition is turned on, so the engine doesn’t need to be running to get steering assistance, unlike hydraulically assisted systems.

Jeff

 
Jeff, like you I had always thought that EPAS would be active if ignition is on, but not I'm not so sure. When my stop start cut in early yesterday the steering went heavy just as it would in a hydraulically assisted car.

 
I have to say that’s a real surprise Graham. My 987.2 CS has hydraulic assistance but I’ve just checked my ancient (2007) Mk5 Golf GTi which has EPAS (but not stop/start) and there’s no assistance with just the ignition turned-on.

I’m not sure when stop/start was introduced but maybe the non-assistance was just rolled-over. However, I can’t believe that it hasn’t been a consideration as a potential safety issue.

Jeff

 
All, thanks so much for the opinions. I’ve got it booked in June to OPC Sheffield. I’ll report back what they say.

I don’t like the start stop feature and like a lot of you I need to get in the habit of turning it off straight away or sport mode all time.

cheers all, much appreciated

 
My previous base 718 used to do this. My 2.5 GTS didn’t do it initially and after numerous visits and discussions with my OPC the battery was changed and it now functions in the same way as my base.

 
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