OBC: Bug or feature?

1338 Views 7 Replies 7 Participants Last post by RKS, Apr 22, 2000

greg

Discussion Starter · Apr 18, 2000

I've had the car about a month, and 1400 miles. I have intentionally NOT reset the Average Speed and Consump2 counters - I want these for long term average. I reset Consump1 each time I fill up. Also, I have the Limit beeper set for 80 mph.

About a week ago, I noticed the Limit was blank. Everything else was normal. Weird. I reset it.

A few days later, Consump2 was blank. I reset it.

A few days later, the average speed was blank. I did NOT reset it - and later it was working again.

Is this a bug? Do these have counters that somehow "fill up" over a period of time?

/G

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Tom

· #2 · Apr 18, 2000

Yes it is, but when it's blank do not reset it, wait for next time you start your car and it will be OK.

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Holger

· #3 · Apr 18, 2000

Must be a bug. I've never reset the consump counters the whole 20.000 miles it was running already and never had this problem. Also every winter I've configured the limit beeper for 240km/h because of my winter tyres not allowing more. Also there was never a problem like this.

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rickw

· #4 · Apr 18, 2000

Yes, that's a known problem (at least I reported it, in writing, to BMW last November)

Occasionally not all of the display fields populate when the engine is started. If the value for that measurement changes, the display will update. You don't have to restart the engine. Also, the information is still available from your dash display.

I just had the NAV software update (not the map CD update) installed last week, which is supposed to fix the intermittent blank map screens, but it did not fix the OBC display glitch.

Rick

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SAB

· #5 · Apr 19, 2000

in addition to having those fields get reset oddly, i had a terrible time with my date getting reset for a while. this about 3-4 months ago. i theorized that leap year had something to do with it, but coudn't prove anything.

knock on wood - the problems haven't returned.

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greg

Discussion Starter · #6 · Apr 19, 2000

Rick Said:

<snip>
I just had the NAV software update (not the map CD update) installed last week, which is supposed to fix the intermittent blank map screens, but it did not fix the OBC display glitch.

Rick

Didn't know there was a Nav software update. Rick - any idea what version your new software is, and does anyone know how to discover what the currently installed version is?

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Lars

· #7 · Apr 19, 2000

I've had this problem since I got my car in December. It's a well-known problem but there is no solution to it available yet. I had the software that Rick is talking about installed a month ago and it didn’t take care of the problem. The problem is that when the OBC reads the status information it is sometimes not available, this is supposed to be corrected in the next release of the software.

Lars

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RKS

· #8 · Apr 22, 2000

My OBC lost all display settings, including date and fuel consumption, at about 8000 miles, as I was in the middle of a spirited drive from Reno to Las Vegas (about 470 miles). Unfortunately it did not come back after restarting the engine. I had to manually enter the date, and the memory of average speed on the trip and fuel consumption 2, which was about 15.5 mpg since car was new, were gone. Haven't been to the dealer about it but it was annoying.

Richard
'00 M5
'93 525i turbo (with primitive screenless OBC that never lost settings)

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