[EuroKip]

I’m recalled of years gone by of motorists who had a belief that some harm might ensue if the AC wasn’t turned off when turning off or starting the vehicle.
It always sounded like nonsense to me. We all know that none of this takes place with today’s Auto Start / Stop functions . Do you think these old timers have got a clue yet ?

 

[Porsche Lee]

My new Cayman was my first experience with Start/Stop. It took a while to get used to honestly. I do like the quiet cabin when off in terms of listening to the stereo. And I appreciate the gas savings.

 

[Naptown]

I just find it annoying so I turn it off.

 

[jimmuller]

I’m recalled of years gone by of motorists who had a belief that some harm might ensue if the AC wasn’t turned off when turning off or starting the vehicle.
... Do you think these old timers have got a clue yet ?

According to the manual, various conditions can inhibit Auto Stop, one of which is AC demand. Actually, I tend to avoid A/S because I keep thinking about the electrical load with lights and various fans running. Also I like running in Sport mode because the shift points are higher, and that inhibits A/S too.

 

[GregW]

I’m recalled of years gone by of motorists who had a belief that some harm might ensue if the AC wasn’t turned off when turning off or starting the vehicle.
It always sounded like nonsense to me. We all know that none of this takes place with today’s Auto Start / Stop functions . Do you think these old timers have got a clue yet ?

As an 'oldie' myself, the reason for turning off the A/C when starting was that occasionally the starting system didn't have enough oomph to both start the car and overcome the A/C load.

The improvements over time and now the heavy-duty components required for stop-start make that a non-issue.

 

[dekilla]

If i drive in through the city i turn it off, as fast i remember to do so. I don´t like the cold engine to start stop.
If i drive longdistance on country roads or german Autobahn and do not want to push, i activate start stop for geting the fuel save with that "sailing" mode which comes with auto start/stop. Love that auto idle mode.

 

[pcarnut]

Still on the hunt for a Cayman, but wondering... is auto stop/start only on PDK equipped cars or the MT too?

 

[RussellHodgson]

Still on the hunt for a Cayman, but wondering... is auto stop/start only on PDK equipped cars or the MT too?

It is on the manual too.

It works if you are coming to a stop (moving less than 4 mph) with the car in neutral and the clutch disengaged.

Then it will start the engine again as soon as you put the clutch in.

Personally I never use it because I don't like the oil pressure going down to zero. It takes a moment for it to come back up again, so you've got to either site there for a few seconds while this happens, or drive off with less than optimal oil pressure.

 

[Guaji]

Still on the hunt for a Cayman, but wondering... is auto stop/start only on PDK equipped cars or the MT too?

Manual also has it.

Edit. Beat me to the answer. ^^^

 

[718Niko]

Engine will never get too cold with the stop start on. The tech actually monitor the temperature of the engine and start automatically before it get cold.
Same thing with the battery, it wont let your battery be drained.

Thats why on long stops it just start after a while even if you have not pressed the gas pedal.

Unless something is defective (but that can be said for just about anything), stop start wont damage anything, it is engineered that way.

 

[pcarnut]

Darn. Does the function default to stop/start after ignition is turned off, or will it remember last selection? On my 2016 A6, i was able to use a product called OBD 11 to change the setting to remember last selection, now I can select OFF and it stays off. The OBD 11 works on Audi/VW products so I'm hoping this might work on the Cayman.

 

[Scubaregs]

Defaults, though you can buy a module to "remember" last setting. $199 though, so being a tight Scottish git I simply switch it off or go into sport mode as soon as I start the car.

 

[Graustark]

According to the manual, various conditions can inhibit Auto Stop, one of which is AC demand. Actually, I tend to avoid A/S because I keep thinking about the electrical load with lights and various fans running. Also I like running in Sport mode because the shift points are higher, and that inhibits A/S too.

A/C demand? Good. I am in Texas and was wondering how the A/C could possibly be remotely effective if the engine is not running.

 

[Barryng]

It does not matter to me one iota if the auto stop feature does a world of good saving the earth from global warming or, at another extreme, does irreparable harm to the engine. I F&*$%^G hate it!!!!! It is too disconcerting to have the reassuring sound and feel of an idling engine, ready to provide welcome power with no latency at a slight push of the accelerator pedal, just suddenly die in awkward silence. And BS on the A/C running: The engine still stops with the A/C running and the A/C performance is degraded as air supply temps rise somewhat before the engine restarts. As I opined in other posts, I would probably be more receptive to this inane and annoying feature if it was a feature I grew up with but it was not and I now instantly put the knob in Sport Mode every time I start the car. It prevents the engine from auto stopping, it gives a more satisfying throttle response, the exhaust takes on a really satisfying note, and the A/C, in the hot south Florida summer, cools better.

With respect to the question above "was wondering how the A/C could possibly be remotely effective if the engine is not running" here is maybe an answer. The compressor actually does not run continuously to prevent the evaporator from freezing up. Some combination of actual evaporator surface temps and refrigerant suction pressure is now used in most cars to reguraly engage/disengage the compressor clutch. I am not sure but I strongly suspect the engine auto stops only during periods when the compressor clutch is disengaged. My first car, a 1964 Buick Electra, had something called a Suction Throttle Valve. If I understood it correctly it allowed the compressor to run continuously by controlling evaporator pressure and therefore its temperature. I read it allowed for excellent control and high cooling efficiency. I understood GM eventually went away from this feature because it became less expensive to contral evap temps other ways including just cycling the compressor on/off.

Just a bit of trivia on the A/C. The engine in my girlfriends Hybrid Lexus is frequently not running. The A/C compressor is a driven by an electric motor, not the engine, so it is always available. The Hybrid has a big ass HV battery that can support an electric motor driven compressor but no engine sound and feel is still very disconcerting.

 

[GTS18BGTS]

I F&*$%^G hate it!!!!! It is too disconcerting to have the reassuring sound and feel of an idling engine, ready to provide welcome power with no latency at a slight push of the accelerator pedal, just suddenly die in awkward silence.

My sentiments exactly I would have bought a Prius, or worse, a Model 3

 

[Wine.O]

I realize it's not a poll, but I for one love the feature. I commute to work, and it saves a touch of gas at the red lights. I want a more spirited ride, and it's a simple button to press. To be honest, I kind of like pressing the button and feeling the car "get ready for it." I probably drive 50% in each. Compared to other cars I've owned that had the feature, the engine start when I press the clutch is perfectly instant and smooth.

 

[antennahead]

The thing I hate the most about it ........... Porsche didn't program this [email protected] thing to remember the setting you last selected. "If" I could keep it turned off, without having to manually turn it off via the on/off switch OR selecting sport mode, every time you start the car, I would be a much happier camper ? And Yes, I am aware I can buy an aftermarket module to fix this. As far as I am concerned, that is another PITA itself OK, rant over

 

[MLJJ]

I don't understand the fuss. I get in, turn the key, press sport and all is done. My index finger doesn't hurt, no blisters, cramps, etc. I must be missing something. And, I enjoy a fresh blast of AC in the morning in 80+ F.

 

[dreamer]

For me it’s kinda like a pilot in a cockpit flipping switches and turning knobs. I just turn it off before I grab the shifter. Takes a half a second extra. Big deal.

 

[antennahead]

I don't understand the fuss. I get in, turn the key, press sport and all is done. My index finger doesn't hurt, no blisters, cramps, etc. I must be missing something. And, I enjoy a fresh blast of AC in the morning in 80+ F.

For me it’s kinda like a pilot in a cockpit flipping switches and turning knobs. I just turn it off before I grab the shifter. Takes a half a second extra. Big deal.

You're both right, it's not that big a deal, but there are still times where it "nails you with a stop". I usually just hit sport when I first crank up the car, and I'm done with it. But if I'm cruising on the interstate I might have sport off. You exit the highway and come to a stop and bam, the engine shuts off. I know, first world problem, but it would have been nice if we could keep it off. Kind of like wishing we could roll down the windows and open the top via the remote, like they can in Europe.