OBC issues

[TwinsPoppa]

I did a search and came up with this.

http://www.xoutpost.com/bmw-sav-foru...n-removed.html

Might be related to problems with your radio. Do you have nav and is your screen functioning?

[SlickGT1]

I have Nav, screen is functioning, audio is working, amp is taking a dump though. Other than that everything seems to work. Just the right button by the cluster won't reset the damn MPG.

[TwinsPoppa]

Originally Posted by SlickGT1

I have Nav, screen is functioning, audio is working, amp is taking a dump though. Other than that everything seems to work. Just the right button by the cluster won't reset the damn MPG.

I don't think that's the correct way to reset it. I think you have to reset using the stalk or a button on the nav screen.

Let me find a thread.

EDIT: Try this one.

http://www.xoutpost.com/bmw-sav-foru...leage-how.html

What you accessed were the hidden OBC modes:
http://www.xoutpost.com/bmw-sav-foru...modes-obc.html

[FlintownKilla]

Nope, no Nav screen.

Originally Posted by TwinsPoppa

I did a search and came up with this.

http://www.xoutpost.com/bmw-sav-foru...n-removed.html

Might be related to problems with your radio. Do you have nav and is your screen functioning?

[TwinsPoppa]

Originally Posted by FlintownKilla

Nope, no Nav screen.

Looks like the OBC functions are tied to the radio/MID. If you have problems with the radio then that's probably it.

If you search some threads with people installing aftermarket radios, they all talk about losing OBC functionality. It still calculates but can't reset anymore.

Like this thread that's on the very first page of the forum.

http://www.xoutpost.com/bmw-sav-foru...installed.html

[SlickGT1]

I gotta go look at this again tonight. I have Nav, and didn't see the reset option. I got to the area where I can select what shows up on the OBC, but can't reset. Or is this supposed to be a button by the nav that I am supposed to press, as opposed to something in the nav options?

[TwinsPoppa]

Originally Posted by SlickGT1

I gotta go look at this again tonight. I have Nav, and didn't see the reset option. I got to the area where I can select what shows up on the OBC, but can't reset. Or is this supposed to be a button by the nav that I am supposed to press, as opposed to something in the nav options?

From those threads it looks like you can do it from the stalk and the nav screen. Like a screen option and then you can choose using one of the buttons to navigate and select.

I don't usually use those OBC functions and I don't have the OBC manual handy. Would be nice to have a PDF of the OBC manual.

[SlickGT1]

Yes it would. Thanks for your help. I'll play with it tonight and let you know the result. Just warning that I did not have any success with this before.

[TwinsPoppa]

I just played around with the OBC and this is what I found out. I have a 2004 4.8, Nav, & DSP for reference.

If I push in the BC button and hold it down, the cluster info. screen says PROG. Now in the nav/radio screen it will display OBC options you can program - consumption1, average speed, etc.

Use the rotating knob on the bottom right of the nav/radio screen to navigate. Push down on it to select and put a check in that option box. Then navigate to MEMORIZE to save your selections.

You can use the BC to remotely cycle through the options you selected and it will display in the cluster info. screen. HOWEVER, you can't reset an option/function using the BC button - only display those options you programmed to display.

You have to go to the nav/radio and select MENU, On-Board Computer. Then navigate to the function you want to reset (right button again), then push down to select it. Then a RECALCULATE prompt appears. Select this and it will reset that option.

I believe if you don't have the nav screen, then maybe you have to clear the functions in a similar fashion - through the radio/OBC buttons. I also assume that the OBC functions can be displayed on a mini-screen (same one that displays the radio information).

[FlintownKilla]

I think my radio is pooched, time to get a dynavin.