Well I tried

[Zimm]

For those with Safari windows, one way to rule out if the water on the floors is coming from the windows and/or the associated drains is to use radiator UV dye and a UV flashlight.

Mix it with a couple gallons and let it flow…

Amazon.de : A/C Pro Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars

Amazon.de : SLTG2020 UV Ultra-Violet 12 LED Flashlight Blacklight Light 395 nM Inspection Lamp Torch

The UV dye can also usually be bought at local auto parts stores.

seems a tad bit elaborate. how about just going around them with rubber tape, and blasting it with a hose, then do the same without the tape?

 

[dreamalaska]

seems a tad bit elaborate. how about just going around them with rubber tape, and blasting it with a hose, then do the same without the tape?

From my understanding that’s the current process, but when you have a small seep/leak it takes time for the water to migrate if it’s coming from the Safari drain tubes (unless of course a tube has separated from a connector), so sometimes there’s still a question when it’s wet outside and also running the A/C during the summer: what is the source of the small amount of pooling water in the floor boards coming from? UV dyed water poured around the Safari Window drains can help determine that.

One could also just pour a small amount of the UV dye concentrate directly into the Safari drain tubes, and any water that runs through the drains will pick it up and when hit with the UV flashlight will brightly glow wherever it ends up coming out.

 

[HeavyFoot]

I won’t have my car for another week so I can’t say for sure, but is it possible to just take off the interior panels and use the car and wait to see exactly where the water comes from?

 

[shiv.nandak]

I won’t have my car for another week so I can’t say for sure, but is it possible to just take off the interior panels and use the car and wait to see exactly where the water comes from?

Due to the genius design of the dash you have to do the following, I have not done this so it is guess based on the workshop manuals I have, talking to the dealer and removing some of the interior myself:

1) Remove pretty much all lower dash panels in front of the driver
2) remove or at least move seats to access center tunnel bolts
3) remove center tunnel panels including the center storage box and unbolt the center tunnel
4) slide center tunnel back to gain access to lower dash bolts
5) unscrew and detach the center button box
6) Finally remove the side cover for the lower center dash
7) After doing this you may or may not be able to confirm where the water is coming from

 

[Skydance]

Due to the genius design of the dash you have to do the following, I have not done this so it is guess based on the workshop manuals I have, talking to the dealer and removing some of the interior myself:

1) Remove pretty much all lower dash panels in front of the driver
2) remove or at least move seats to access center tunnel bolts
3) remove center tunnel panels including the center storage box and unbolt the center tunnel
4) slide center tunnel back to gain access to lower dash bolts
5) unscrew and detach the center button box
6) Finally remove the side cover for the lower center dash
7) After doing this you may or may not be able to confirm where the water is coming from

The condensation drips from the passenger centre tunnel is from inside the foot vents. Next time at start up on a humid day, put your finger up and inside the vents and you can feel the droplets. So all the lagging of pipes was pointless.