718 Coding using Launch X431 tool

[Arne2]

The climate control startup parameters can also be edited, if you have seat memory. Default is for the HVAC setting to start with the settings that have been saved to memory, per key. So if you save the seat settings with the HVAC set to "SYNC, 74°, A/C off" that is what it will be on startup regardless of what you had it set for when you last shut off the car.

I found this to be a pain on an August trip through California's Central Valley in 105-115°F heat. I obviously had the A/C cranking, but after every stop (fuel, food, rest area) the car started with A/C off. Not great.

There are 3 possible settings for cars with seat memory — Basis, Driver Memory, Comfort Memory. Comfort Memory is tied to the seat memory, and is the default for cars with seat memory. Driver Memory remembers the last setting that was used with whichever key was used. And Basis apparently just remembers the last setting regardless of key.

HVAC startup memory

• System Selection > Air Conditioning > Memory concept--Package options = [Comfort Memory, Driver Memory, Basis]
  {Default: Comfort Memory}

screenshot_2022-09-04-12-47-55-760-jpeg.46668.jpeg (76.41 KiB) Viewed 2599 times

screenshot_2022-09-04-12-48-03-263-jpeg.46669.jpeg (76.73 KiB) Viewed 2599 times

[Stormy_Monday]

Arne,
Thanks for all the helpful information. This is a bit off topic, but do you know if my 2022 Cayman GTS has proximity sensors? If it does, they don’t work. I’m wondering if I don’t have them or they are just deactivated. If the latter is the case, can they be activated via coding?
Thanks,
Larry

my 2022 Boxster GTS, delivered to me May 2022, has proximity sensors

[Southbama]

My '22 GTS 4.0 also has the sensors, delivered October '21.

[718socal]

The climate control startup parameters can also be edited, if you have seat memory. Default is for the HVAC setting to start with the settings that have been saved to memory, per key. So if you save the seat settings with the HVAC set to "SYNC, 74°, A/C off" that is what it will be on startup regardless of what you had it set for when you last shut off the car.

I found this to be a pain on an August trip through California's Central Valley in 105-115°F heat. I obviously had the A/C cranking, but after every stop (fuel, food, rest area) the car started with A/C off. Not great.

There are 3 possible settings for cars with seat memory — Basis, Driver Memory, Comfort Memory. Comfort Memory is tied to the seat memory, and is the default for cars with seat memory. Driver Memory remembers the last setting that was used with whichever key was used. And Basis apparently just remembers the last setting regardless of key.

HVAC startup memory

• System Selection > Air Conditioning > Memory concept--Package options = [Comfort Memory, Driver Memory, Basis]
  {Default: Comfort Memory}

screenshot_2022-09-04-12-47-55-760-jpeg.46668.jpeg

screenshot_2022-09-04-12-48-03-263-jpeg.46669.jpeg

This is technically not accurate the Basis setting remembers your AC temperature but not when it's turned off. The Comfort setting will remember your settings with AC ON or OFF.

[718socal]

Arne,
Thanks for all the helpful information. This is a bit off topic, but do you know if my 2022 Cayman GTS has proximity sensors? If it does, they don’t work. I’m wondering if I don’t have them or they are just deactivated. If the latter is the case, can they be activated via coding?
Thanks,
Larry

my 2022 Boxster GTS, delivered to me May 2022, has proximity sensors

There was a cutoff date for MY 2022

[718socal]

My '22 GTS 4.0 also has the sensors, delivered October '21.

Bill, all the MY 2022 Boxster GTS that I have coded, did not have the proximity sensors. You have a CGTS like me.

[Arne2]

This is technically not accurate the Basis setting remembers your AC temperature but not when it's turned off. The Comfort setting will remember your settings with AC ON or OFF.

Thanks for the clarification!

[blueline]

Porsche, in their wisdom, seriously constrains the coolant temperature display in their vehicles (except the GT2/3/4). It is interesting how Porsche is modifying the actual values you see, probably to decrease variability in the display and avoid having unnecessary calls from customers that don’t know what’s going on. In actuality, they have made the coolant temp gauge nothing more than a glorified idiot light.

For example, all temps from 80-115°C (176-238°F) are programed to display 90°C (194°F). The gauge doesn't start reflecting true temps until it gets to 125°C (257°F).

Hey Arne, I meant to inquire about this a couple of weeks ago but it slipped my mind and I forgot to ask.

I am assuming that this deprogrammed coolant temp display that you described is only for 718's? I say that because in addition to the GT cars, my Turbo S and Cayenne Turbo display coolant temps as they should, as have other P cars. If starting any cars cold (or warm or hot) the digital gauge displays temps accurately and the display tracks the temps as they rise, as one would expect.

I cannot fathom Porsche dumbing down temp readings by having "... all temps from 80-115°C (176-238°F) ... programed to display 90°C (194°F)." I would think there would be a massive outcry from owners. Is it possible that yours somehow was deprogrammed and your coding got it back to where it was supposed to be? Or is it possible that Porsche has done what you described for certain models? Shame on Porsche if that's the case. I'm curious as to what other 718 and other Porsche model owners are seeing in this regard.

Also, your comment that the coolant temp gauge doesn't start reflecting true temps until 257° F (125° C) is perplexing. Coolant at 257° is already too hot. A vehicle would be overheated and near or past engine damage at 257°, correct? I would think a radiator would have boiled over before reaching 257°.

If I'm overlooking something or misstating what you said, I apologize in advance. It's just that I cannot make sense out of the numbers. I keep trying to figure out what I'm missing.

[Arne2]

No, most late model Porsches do have the dumbed-down coolant gauge. I got this info from a 991 discussion in a different forum, and it was confirmed in a Macan group, and with several 718 and 981 owners. It's possible that the Turbo models (emblem'd as such, not just turbo-equipped lesser models) get the "real" numbers like the GT cars do, yours is the first I've heard of that possibility.

The gauge doesn't read true numbers until 257°F, but at actual 239°F the displayed temp suddenly jumps from 194°F to 221°F, and at 245°F (actual) it jumps again to display 239°. My understanding is that the overheating warnings start at the 239°F (actual) mark.

Luckily this is easy to fix with a quick re-code.

[Larry C]

When Phil @718socal coded my car, I saw on his laptop the old temperature grouped readings and the post programmed ones. I have a 718 so I don’t know how the OEM display works on other models.