Lumbar bladder not holding air

Hello forum! We are out on a road trip and I noticed that the lumbar bladder is not holding air on the drivers seat. Any suggested fixes? Thanks!

From first introduction of Sprinters with the lumbar support, the air inflated lumbar support has apparently been unreliable. There are several threads on how to repair, if so inclined.

You will be assuming our ISRI seats are the same as standard Sprinter seats insofar as the lumbar support.

https://sprinter-source.com/forum/showthread.php?t=62500&highlight=Lumbar

https://sprinter-source.com/forum/showthread.php?t=5574&highlight=Lumbar

https://sprinter-source.com/forum/showthread.php?t=2105&highlight=Lumbar

Please post whatever you do. Thanks.

Thanks! I did not realize other T1N's had our same front seats. Reading up about this issue, it seems that parts come off in the bulb, so I'll start there and see if I can get it to hold air. I'll report what I find, thanks.

FYI for our fellow Westy seat owners. I followed the excellent picture in this post:

https://sprinter-source.com/forum/showpost.php?p=261616&postcount=5

In the case of the Westy, when I pulled the bulb out, I was able to find three pieces: the two black round plastic bits and the little round white rubber flat piece that gets squeezed between them. I didn't find a long, square white piece as pictured. What I did was assemble the three pieces in the order shown, with respect to the correct orientation facing the rubber bulb. I put these pieces in the hard tube protrusion that remains in the Westy when you pull off the bulb. By placing the pieces in this hard tube in the correct order, I was able to then slip the bulb back onto the hard black tube. Now it holds air.

This sounds worse than it is, and requires no disassembly of the seat other than carefully pulling the bulb off. It takes about 5 minutes. For some reason it overwhelmed me and I delayed having adjustable lumbar support for years!

Also an interesting note: our passenger seats in the Westy do not have the air-lumbar support feature, as regular Sprinters appear to. At least that is true for mine (#133). Not that it is so necessary as I find the seats to be generally quite supportive.

My Sprinter Westfalia lumbar bladder had broken apart and assume it happened due to age and that the previous owner from Florida did not garage park the vehicle. Pieces of the bladder fell out of the seat's backrest when I followed the inflation tube into the cushion part of the seat with my hand.

I wonder if that could be from over inflation combined with air expansion from hot Florida weather?