Droopy Cayenne!

[gareth h]

Gents, Advice please, I noticed the cayenne was sitting about 25-50mm lower on one rear corner (2014 diesel s on air) it seems to level up when driving, the extended warranty runs until Feb, but it’s a pain in the arse to get it booked in at the local (2.5 hours away) dealership, any thoughts on whether it is likely a straightforward fix?
Thanks
G