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Quick update: After killing my battery again over the weekend I got some new error messages. Among them was the Auto start/stop not working like yours (and some others, general CEL, doors not locked while on drive mode, parking brake not functional etc). I disconnected the battery for 30min and reconnected, than started the car a few times. After a few attempts, the errors all cleared - so, maybe you had the same issue that they left the door open or something else while working on your car and it drained the battery. Just recharging does not work to clear the codes. at least not immediately...sometimes, the nuclear method and disconnecting the battery helps as I experienced.
on my 991.1, it was common for the auto start/stop to cease working when the battery was on the way out. I can’t say if that applies to 992’s however it occurred to many 991 owners.
After 2 hours of calibration, all codes are cleared. Recalibration cleared every fault. Car runs perfect, I’m glad this ordeal is over.
I’m not sure if this is true and I’m just quoting what I was told, that if you pull your battery before installing yours springs, your most likely won’t have any error codes.
Let's bring it back again haha since nobody responded...
I'm wondering is there some tool that can be bought to do the recalibration like on amazon or something like this?
So there were 2 things that made me able to program the ride height sensors after the KW HAS install.
I was able to find the PIWIS 3 software (and corresponding cheap replica VAS 6154 adapter) to use, which has the reprogramming function within.
If wanted, I think I have screenshots from the relearn or "Maintenance repair" procedure?
The rear was actually "too" out of spec to even re-learn, so I 3d printed drop brackets. (also happy to share STL if anyone is interested)
Oh wow. I had to so something similar with my carrera t but there were some adjustable parts I purchased. I was hoping I would just need to recalibrate with the software
But very helpful !! Thank you for sharing and I may be following up with you if I don't succeed.
I think as long as you don't lower it too much, you should be able to get away with only reprogramming.
I lowered ~1.5" in the rear and ~1.25" in the front, and I only had to mess with the rear drop brackets. YMMV
So there were 2 things that made me able to program the ride height sensors after the KW HAS install.
I was able to find the PIWIS 3 software (and corresponding cheap replica VAS 6154 adapter) to use, which has the reprogramming function within.
If wanted, I think I have screenshots from the relearn or "Maintenance repair" procedure?
The rear was actually "too" out of spec to even re-learn, so I 3d printed drop brackets. (also happy to share STL if anyone is interested)
Ended up doing the same thing. I was getting -1 in the front and -2 in the rear.
I couldn’t recalibrate the height sensors because they were out of range like mentioned above.
I ended up 3D printing some spacer for both the front and the rear. They both have a 1 inch spacing.
After that I was able to remove all faults and calibrate the sensors.
Last edited by Panadero; Dec 29, 2025 at 12:08 AM.
Ended up doing the same thing. I was getting -1 in the front and -2 in the rear.
I couldn’t recalibrate the height sensors because they were out of range like mentioned above.
I ended up 3D printing some spacer for both the front and the rear. They both have a 1 inch spacing.
After that I was able to remove all faults and calibrate the sensors.
Would you mind sharing how can I get one of these spacers? I have the same problem
After 2 hours of calibration, all codes are cleared. Recalibration cleared every fault. Car runs perfect, I’m glad this ordeal is over.
I’m not sure if this is true and I’m just quoting what I was told, that if you pull your battery before installing yours springs, your most likely won’t have any error codes.
This is good to know as I’m looking to lower my 992 C2 with Bilstein EVOs in the near future. I’m assuming calibration is done at the dealership?
