power windows problem

my 1999 328i's rear passenger window goes up and down on it's own switch but only goes up on the main switch. how can i solve this? trying to search the forum but 20 pages of irrelevant posts come up. please help.

and also, can somebody post a picture of the relays, where it's located and which ones are which?

thanks!!!

Originally Posted by lilpymp

my 1999 328i's rear passenger window goes up and down on it's own switch but only goes up on the main switch. how can i solve this? trying to search the forum but 20 pages of irrelevant posts come up. please help.

and also, can somebody post a picture of the relays, where it's located and which ones are which?

thanks!!!

For location and which is which look at the third picture down on this page.
http://www.bmwgm5.com/GM5_FW_Relays.htm

thanks. is there anyway i could see how the relays look like from behind the glove box?

no takers???

Eh? If you want to see the relays scottjoh is talking about, you'll have to remove the whole GM5 module and open it up (don't mess with $hit inside unless you know what you're doing). It's behind the glovebox, which you'll have to remove to access it. Scottjoh has a great site (the one he linked to) with pics and removal guides if you're interested.

Also, I don't really know, but it sounds like your switch might just be faulty (bad/worn contacts, etc.)

i had a hunch that it was the switch too but it makes a clicking sound to the window motor at the back when i push it. it just doesn't go down but it goes up from the main switch. it goes up and down on it's own switch. you think it's a switch?

btw, how do you know that a relay is bad? i thought it was those plug and play relays but it says on the link that it should be soldered.

PM or email Scott above, he's very knowledgeable about window relay/GM5 issues.

If you can control the window motor up and down with the local switch then it is not the relay! It still could be the GM5 however.

I have seen a couple GM5's that have had bad inputs from the windows switches, but, that is pretty rare. I didn't believe it the first time I was contacted. He said he replaced the switch and the problem presisted and wanted the relays replaced. Symptom did not sound like a relay, but, I told him to send it in and I'll take a look. Sure enough two windows switch inputs were bad. One window would not go up and another window would not go down when tested on my known good test bed.

thanks guys!