Problem with rear window blind

[bmw540]

Has anyone done trouble shooting of the rear window blind.

When pressing the button it sometimes goes up and down as normal but now it does not work at all.

It seams like a relay issue but not sure where to look. Fuses are fine and when the button is pressed it pulls a 4amp drain. Maybe the motor has gone...who knows.

Any trouble shooting experiance like relays etc please post.

[bmw540]

anyone?

[TC535i]

99.999% of us don't have a rear window blind, let alone a power one :(

[525SEI BRIT]

If you would like to do away with the inconvenience id happily take it off your hands!! :)

[Kalevera]

The control module for the sunblind lives on the underside of the parcel shelf. There's nothing between the switch, the power source at the rear power distribution center, and that control module.

Chances are the (plastic) gears in the unit have stripped to the extent that they are jammed in the down position. If it's on the gearbox side, it can be modified for a partial repair, or there are replacement metal gears available in the aftermarket. If it's on the motor side, time to get a new motor. But first, pull the control module and see what it's outputting.

Also, Erich (shogun) has posted info on sunblind repairs in the past. Have a search.

[shogun]

there are replacement metal gears available in the aftermarket.

I only know one person who makes these, and that is someone in Germany.
Have bought from him 5 pieces in steel version.
On my website below on the link to evansweb (Jon Evans) there is a repair done on a plastic gear by re-installing the bigger gear on a range where the teeth are still o.k., as only a part of the whole toothed rim is used.
Typical symptom: rattling noise.

More info
http://www.bimmerboard.com/forums/posts/297158/
http://www.bimmerboard.com/forums/posts/61904/
http://www.bimmerboard.com/forums/posts/273819/

[CharlesAFerg]

I'll buy that **** in a heartbeat.

[shogun]

Seller's name on German Ebay is trpediple.
He is not always offering them, so you have to check.
Here pics on an E31
http://clube31.de/phpBB2/viewtopic.php?t=4400&highlight=rollo
our repair
http://8810.teacup.com/750hiline/img/bbs/0000518.jpg
http://www.bimmerboard.com/forums/posts/266991
This one was sold for 45.50 EURO
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ih=013&sspagename=STRK:MEWA:IT&viewitem=&item=230050156378&rd=1&rd=1

[stilljester]

Sorry Noob here but What exactly is this?

[shogun]

Here
http://evansweb.info/articles/2003/01/18/electric-rear-blind-repair

The gear was replaced by a better version around 1996, but they can be found even in E38 built in 1998, apparently the maker had a huge stock of old ones. Same gears are also installed in some Mercedes Benz models

[Linuxguru]

My electric rear blind works both up and down, but the motor continues to move for 5-7 seconds after it reaches either up or down position, producing a rattling sound.

Anyone know why, and how it can be fixed?