T6.1 Ocean sinking roof

[CaliforniaCylus]

The test is a lowering of more than 20cm within 72hours, this is not cumulative. VW measure the roof from the datum point, and if it isn’t lower than the 20cm regardless of how many re-raises it meets the specifications. If you lower your roof by 20cm at home its a massive amount of sag compared to what most of us are seeing, so will not be treated as a fault.

I'd challenge that. If it's not cumulative then why wait 72 hours...

If it doesn't drop 20 cms in the first 10 then re-inflation will take care of the rest.... So no need for a 72 hour test...

Remember lots of VW dealers aren't very competent.