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View Full Version : Was there a "cheap" OBC option???


granit_silber
12-17-2005, 07:30 AM
Was there a cheaper OBC option for our cars or were all of them the same.
My 5'er was manufactuered in 3/92.

I ask because
1) Parked ventilation doesn't work (will fix that this spring)
2) None of the tests work

I can get test to readout on the display and even change the test number, buit when I push S/R I get nothing but the time.

Am I doing something wrong? Do I need to hold my tongue a different way???
-ashley
Jay 535i
12-17-2005, 09:37 AM
I think parked ventilation doesn't work in early cars, despite it being talked about in the owner's manual. I can't get it to work in my '90 car.

Don't know about the tests.

Someone around here will know...

I believe the "cheap OBC" option was an analogue clock :)
Torque
12-17-2005, 09:56 AM
Are you sure your OBC is unlocked?

As far as I know, most US models didn't have parked ventilation.
ProZak
12-17-2005, 03:42 PM
FWIW, my parked ventilation works. 1995 525i.
ProZak
12-17-2005, 03:45 PM
Rgh, meant to ask what you mean about OBC being "unlocked?"
Qube
12-17-2005, 07:14 PM
You'll need to unlock the OBC first. Do a search for that here.

Ventilation is feature dependant. Mine has a timer instead of auto-vent.
shogun
12-17-2005, 07:31 PM
Parked ventilation is described on Bruno's page how to insrtall and what is needed. If you do not know Bruno's page, link is on my website below.
OBC unlocking:
http://home.iae.nl/users/bts/obc.htm
TWISM
12-18-2005, 02:33 AM
When you don't have parking vent in your car, you will have a timer.
If you DO have a parking vent, but not working. You won't have a timer.
Then goodluck with repairing the park vent. :D

And my guess about the test functions is, that I think your OBC is locked.
Unlocking is described in the link from shogun.
crowegreg
12-22-2005, 08:32 AM
The OBC maybe locked, not allowing you to make any changes. Have you unlocked it? Do you have a printout of displays within the test mode?
DanH
12-22-2005, 08:47 AM
I think all OBC's are the essentially same hardware internally, it just depends what things are connected to them to determine what features they will support.
granit_silber
12-22-2005, 09:48 AM
Thanks for all the replies. I had forgotten about unlocking the OBC.
-ashley
granit_silber
12-22-2005, 09:55 AM
When you don't have parking vent in your car, you will have a timer.
If you DO have a parking vent, but not working. You won't have a timer.
Then goodluck with repairing the park vent. :D

And my guess about the test functions is, that I think your OBC is locked.
Unlocking is described in the link from shogun.
http://www.bmwe34.net/e34main/upgrade/ventilation.htm
-ashley