djdonte

Did the codes stay gone? 8A is not enough. I believe Porsche calls for 90A minimum. My cars voltage drops significantly when coding which tells me the modules are drawing a lot of juice. I also tried using another large SUV's alternator and that didn't work either. I keep my car at ~13.5v. Once it gets closer to 12.0 the PIWIS software give you an alert and lower (I want to say near 11.0) it will not let you go any further until the voltage goes back up.

siberian

I'm sorry to be blunt, but I think you're in way over your head. You have an external power supply but don't know how to connect it? You tried to recode the Gateway module without really understanding the innards of the software etc. nor do we understand why you would want to code an older SW version...Your 8A power supply is totally inadequate.

There are too many unknowns here. Respectfully I suggest

1) Take the car to a dealer
2) Begin reading up on PIWIS and understand the tool you are trying to use.

GL

siberian

djdonte

I agree… way more research should be done before coding. Should you brick a module, you will be looking at a tow to the dealer and who knows how long of a wait to replace a module for who knows how many thousands of dollars.

rnlst_log

The Gateway firmware should be OK.
The issue is not on the post programming firmware, its something else.

siberian

But why try and code an older firmware?

siberian

Ponce

I figure it out! Its working.
I had to add every single option by hand and install it. I dont know why but it seems automatic coding delete most of it. It shows that everything is installed (except headlight washer - there is no such code in my piwis).
Thank for all supportive and helpful people!

rainer

If automatic coding deletes items in the Gateway there must be something wrong with the VO I guess. Normally Piwis looks up option in the VO for automatic coding.

I've seen a 970 recently which seemed messed up since options were simply missing in the VO, had to add them manually (e.g. LED headlights, the option was simply empty)

GT3dailydriver

Could someone explain what "auto coding" does? Does it code everything based on the VIN, or how does it klnow what options are installed and how to code them?

technoholic

Reads the Vehicle Order from the car, then codes all modules to match the settings required for those installed options. You can change your own VO and then re code the entire car and it will change anything required to make that option work. E.g. if you add PSE if you don't have it, auto coding will then change settings in the PCM to display the button, change settings in the DME to allow control over the valves and so on. As far as I know, with these knock off versions of PIWIS, when you change the VO for your car, it doesn't change it at Porsche centrally unlike when you buy a factory PSE and fitment for example, which will then add the option to your car in the Porsche database instead of just "locally" on your car.

jtsherri

Hoping someone here might be able to point me in the right direction with this one and how to determine if I should program the default PDK calibration or the one referenced above.

Long story short: I screwed things up by tinkering with the PIWIS before I knew how to use it (nothing critical - just inconvenient!). I’ve since worked with someone to get her 90% back to normal and although he’s a seasoned Porsche tech, information on the above doesn’t seem to be available, so hoping someone here may be able to shed some light.

Worst case, I know the default cal won’t blow it up, but hoping to get it right vs. guessing and checking.

Thanks in advance! 🙏🏻👍🏻

technoholic

You can't "Program" a calibration - programming and calibration are two different things. You shouldn't be going near programming in my opinion, calibration is in menu 6 and is the only thing you should run if you dont know anything more which I dont. I would not go ahead with programming anything unless you know exactly what you are programming.

jtsherri

Apologies for the terminology mistakes. I chat with a lot of engineers across different platforms and tend to ‘cross streams,’ so it’s easy to get the verbiage wrong.

Ultimately, I *know* that the PDK needs to be re-programmed back to stock. It currently has a Cobb tune on it, with the inability to flash it back to stock using their hardware (due to previous issues I was dealing with). To work around this, I need to use PIWIS to take it back to the stock, then deal with Cobb’s support team to reset the AccessPort and flash the aftermarket tune back on.

paskuale

Can I ask some informations about T6PTG3 ?
- It will work with original driver for Porsche VCI G1/G2 or it's a Passthru device (need another driver) ?
- It will see ignition ON/OFF ? Passthru devices can not see ignition ON or OFF
- Can I program replacement headlights on Macan 2022 ? I already tried with VAS but it will not work due communication issue...

siberian

You'll need to download the tabscan app from eucleia for drivers.

It will recognize ignition status

You should be able to reprogram headlights on Macan.

GL

siberian

paskuale

Thank you for your kindly answer.
I will take the interface soon.
Bests