Sagging Roof bellows in hot weather - experiences

[CaliforniaCylus]

There's lot's of posts on this one and a long one I created some time ago.

https://vwcaliforniaclub.com/thread...ng-bellows-roof-poptop-tpi.56210/#post-728126

Ours still sag too much for my liking and am thinking about having a new Hydraulic pump fitted. Apparently there is a new version of the pump in production now (I don't know when it hit production) but I'm keen to hear peoples experiences. It is rumoured there was a bad batch in late 2022 into 2023 so I'm keen to understand if any folks have the problem with T6.1s manufactured in 2024 or indeed T7s. I'm guessing they use the same pump, but only a guess.

 

[Up10]

Ours is currently in the garage. I'll let you know how we get on.
Tried raising and lowering the roof 5 times but it didn't fix it.
Sags more in warm weather.
Auto correct does not work. No sound of the pump after 10 hours which the manual states it should.
Registered new in Jan 2024. T6.1

 

[Up10]

Oops, it's newer than I thought, March 2024!

 

[Sad]

Registered in August '24, and ours does not sag...

 

[KevH]

MY23 registered November 22, ours has always sagged in warm weather.
Dealer was of little use but did disengage the roof lights from the sensor so at least the lights work when it drops.
I have now resigned myself to it, and give the roof a quick pump up in the evening before bed.
Have only ever heard the roof lift at the 10 hour mark, which was two weeks ago (owned since 2023) and it hasn’t done it since. It was middle of the night, I almost papped myself. Baffling and damned frustrating but I won’t let it spoil my hols.

 

[Lambeth Cali]

It’s that season again. No sooner has the rear boot door stopped banging on my head in the cold weather, than the questions begin about if you can drink Cali water, next the roofs start to sag again.

It all comes around so quickly these days. In a couple of weeks it will be ‘do I need to plug my Cali in every 2 weeks all winter long?’

 

[KevH]

It’s that season again. No sooner has the rear boot door stopped banging on my head in the cold weather, than the questions begin about if you can drink Cali water, next the roofs start to sag again.

It all comes around so quickly these days. In a couple of weeks it will be ‘do I need to plug my Cali in every 2 weeks all winter long?’

I have never been whacked on the head by the boot door and always drink water from the Cali tap (I am very careful when filling, sterilising, etc.).
I feel that I am missing out on not worrying about those things

 

[Almost bought a california]

It doesn't fix the problem but it might solve your problem (at a price!)

Locking mechanism for the electro-hydraulic pop-up roof of the California Ocean "Roof Lock"

Quick installation - done: And the roof stays up! We've been waiting a long time for this useful helper... The California Ocean drivers among you know this: after a certain time, the electro-hydraulic roof of the California Ocean sags slightly. Not only does this not look nice, but it can...

www.buessli-shop.ch

These are CNC'd aluminium but I might have a go at printing in ABS for the long hot summer days ;-)

 

[Kernowboy]

I'm keen to hear peoples experiences. It is rumoured there was a bad batch in late 2022 into 2023 so I'm keen to understand if any folks have the problem with T6.1s manufactured in 2024

My experience:
17 plate - no sag
18 plate - very minor sag after a few days when hot, to be expected
21 plate - sagged badly (my assessment) within 24hrs, in limits (VW assessment)
23 plate - very minor sag after a couple of days. Leaked like a sieve though. Rejected do not tested when hot.
24 plate - rock solid, no sag at all even after many days in the heat. No faults at all on this one, seems VW got it right for the very last production run