I took my kid skiing to NH and had to leave the truck outside overnight both nights, as hotel didn't have indoor parking. It was very cold every night, anywhere between -5 to -10 degrees F, and in the morning left front corner was maybe an inch or two lower than the rest of the car. It was never completely down to the ground, like a totally leaked out air strut. Upon start, it would pump up instantly and retain air pressure and maintain height throughout the day, even with the car was parked during the day for a prolonged periods of time. Also, air pump doesn't appear to be running constantly during the day, as it would with a big, persistent leak.
At home car is parked in a climate-controlled garage and this doesn't happen, even when it sits for a week or more. I'm trying to figure out if the failure of this type is necessarily is in air spring itself or it could be the distribution block or something else. I don't mind replacing struts, just need to confirm them being the cause, and also what aftermarket options aside from Arnott are available out there if they need to be replaced.
Thanks everyone in advance!