Car Back Seats

[fruitsalad]

Are getting wet, but I cannot make out where it's coming from, front seats seem fine

[retrocop]

Do you have a sunroof/panorama roof?

Is the roof lining wet?

Do you have a rear window washer and the reservoir constantly needs topping up?

[Hymie]

Check the boot for wetness – I once had a vehicle in which the boot tyre-well was full of water due to a leaky boot seal.

[Hymie]

If you suspect a rubber door seal is not making fully and allowing water ingress – lightly coat the rubber door seal with Vaseline (or similar), close the door and open, and then check for a continuous transfer of Vaseline from the door seal to the vehicle bodywork.

[fruitsalad]

No sunroof or panorama roof the roof inside is not damp at all, just the back seats, I will definitely try the vaseline on the rubber seals though.

[bhg481]

Wet back seats or boot used to be down to the back window seals leaking but nowadays the glass is glued into place so a leak is rare. Wet carpets are sometimes caused by a rubber plug in the floor being lost but that can't be the situation in your case as it wouldn't get water on the seat. The only thing I can suggest is running a hosepipe over the rear screen and see if you are one of the few unlucky enough to have a leak.

[Hopkirk]

Possibly through the centre break light, depending on where it is fitted.

[Canary42]

Do you have a dog on the back seat ? 

[Hopkirk]

Ugh!

[Hopkirk]

(yes I know, I meant brake light)

[Hopkirk]

It could be water getting inside the tailgate. Once the tailgate is opened it then drips onto the back seat.