JDailey

2020 Macan here with water in the taillights which caused the blinker to fail. Dealership is replacing it tomorrow under warranty, so there's a plan to get it resolved. But a few questions:
1) Is this common? Are lots of Macan owners seeing this?
2) Any idea what's causing this? I live in Denver, Colorado which if you haven't been here is a desert. It's incredibly dry here, so other than the car wash I can't imagine where this water is coming from.
3) If it happens again (out of warranty), is this something that can be fixed DIY?

Thanks!
James
Denver, CO

Todd B

I'm assuming the new taillights are like the previous generation cars, the lights are vented. This is normal, especially after washing the car. the issue will resolve it's self if you leave the car in the sun or run the lights. Since the dealer is replacing the lights they maybe redesigned and no longer vented.

here's some previous threads,

This thread is a renlister with a 2019 (2nd generation) with the issue https://rennlist.com/forums/porsche-...taillight.html

JDailey

I understand that they're vented. The side lights (not on the tailgate) occasionally get moisture and it then evaporates. But the light bar is a different story. It's been over a month living in the desert and they're still full of moisture. Is it a design flaw? I guess I'll find out if it happens again after it's replaced...

CarGuyNVA

Yeah that doesn’t look like the typical minor fogging that can occur after a wash and disappears pretty quickly. Good move to have the dealer replace that one.

Petza914

All Porsches long tailgate and decklid lights and reflectors seem to do this - happens on the AWD 911s that have a full width decklid reflector too. There are 2 solutions, but they have to be done before the new light is installed. Either take clear silicone and run a very thin seal around the edge of the complete assembly so the plastic pieces can't separate and allow the moistirr to get in. Or, take it to a vinyl shap and have them clear bra it and make sure they wrap the plastic all the way around and terminate it on the back side.

Terry Adams

Perhaps a leak in the rear window washer system? OP did say lives in a dry area.

pop.tremuloides

We can only comment on our 2017 Macan S.

Not ONCE have we seen anything like what you are showing.

Personally I would bring this to the attention of your service/sales person.