[busted323i]

Recently I got splashed with the driver window down. Ever since my master window switch does not work anymore. I can't roll down any windows nor can I use the window lock button.

But, I can still adjust my (power) mirrors.

Any ideas what's broken?

(Btw my car does not have power mirrors/seats if that matters)

[Captain Buumer]

got splashed with the driver window down -> window switch does not work anymore

Electronics + water = not working electronics.

Take the module apart and examine damage/buy new.

[busted323i]

Originally Posted by Captain Buumer

got splashed with the driver window down -> window switch does not work anymore

Electronics + water = not working electronics.

Take the module apart and examine damage/buy new.

I'm just confused by the mirror switches still working. If the entire board was fried you'd think all the buttons would stop working

Either way, are there any good aftermarket switches?

[ctuna]

You can buy the OEM pod on ebay or amazon for around 50 bucks last
time I looked.
You might try removing the current one dipping it in a solvent then drying
it under low heat.
There is a lever that releases the whole pod. The connector itself could be
retaining water. So I would blow out the connector and try to let it dry.
Also you could clean the switch pod with a solvent and try to dry it in low heat
of out in the Sun.

Test switches before you put it in place.

There are a bunch more DIY video's on ytube like this
Search e90 master window switch.

https://www.amazon.com/Electric-Mast.../dp/B07JZXBDFG

[busted323i]

Update:

Board is fried lmao
New Chinese board on the left, old OEM board on the right.
I see there are some differences (notably the amount of capacitors)

Did I get the wrong board? I've got no power seats/power folding mirrors so I got P/N 61319217326.

[ctuna]

Bottom line does it work?

[busted323i]

Originally Posted by ctuna

Bottom line does it work?

The window motor adjuster works
Still, I'm not gonna put a leaked capacitor back in the car lol

[ctuna]

Does the new board work yes or no?
All the switches yes or no?
Test before reinstalling.

[busted323i]

Originally Posted by ctuna

Does the new board work yes or no?
All the switches yes or no?
Test before reinstalling.

What works on the new board:
-Red lights when low beams on

What is acting off:
-When plugged in, the left side mirror instantly goes down-left, motor keeps whirring after max position reached (no buttons being pushed)
-Window lock switch works sometimes, sometimes the green LED flickers

What doesn't work:
Everything else

Could this be a fuse issue?

[ctuna]

Window switches should have nothing to do with lights .
If your having problems with lights the FRM module controls that.
Not likely a fuse issue stuff without fuses doesn't work.

You need BMW diagnositcs or the equivalent.

If everything else doesn't work does that mean the car doesn't start
You are being to vague.

[Captain Buumer]

I would bet the chinese PCB is just not working as the previous OEM one.