Normally Taycans fly low and hang tight to the ground. Mine has broken all records while reaching over 20 miles or 32kms. over sea level.

[Pozuelo]

Anyone else ? Getting dizzy ... higher than a U2 spy plane with no oxygen bottle !

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[Scandinavian]

Anyone else ?

Congratulations! You have found the Taycan hidden Easter Egg!

 

[NC_Taycan]

FWIW, 32767 is 2^32-1 or hex 0xFFFFFFFF or -1 in two's compliment. This tells the software engineer in me that altitude is stored and displayed as a 32 bit unsigned integer, but somewhere else if somehow altitude is not available or there is an error in calculating it, the signed integer value -1 is returned as an error value (quite common in software engineering).

Or maybe you really are 1m below sea level. Or maybe your GPS calculated altitude really is 1m below sea level...

 

[YWGT3]

Are you sure an oxygen mask didn't drop down from your visor? I think that''s standard equipment when reaching those altitudes in the Taycan.

 

[Scandinavian]

Anyone else ? Getting dizzy ... higher than a U2 spy plane with no oxygen bottle !

I had exactly the same in the summer parked in the port of Nice, ie at sea level.

 

[SwissTaycan]

I had that once on a 991.2 Targa 4S about two years ago and then slowly descended back to my actual altitude...

 

[Pozuelo]

I was parked near my home at about 700m above sea level. I assumed the satellite signals to calculate altitude and location were not all acquired yet. In a few seconds it went back to normal !
Another possibility is the existence of an official armoured vehicle or building which have powerful frequency inhibitors. These were designed and very common when terrorists used to detonate bombs by remote control using receivers or mobile phones. When driving near one of these, the car also advises that the key is not found.