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Old 11-25-2012, 12:59 PM
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QSilver7 QSilver7 is offline
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Location: Northeast Indiana
Join Date: Aug 2008
Posts: 9,164
Mein Auto: 1997 740iL / 2006 X5 4.4
Ditto...if you're looking at your OBC's RANGE figure...take another look when the engine reaches normal operating temps and see if the "range" has now increased to approximately where it was when you shut the engine down last.

The OBC is taking current calculations...and a "cold" engine is consuming more fuel than when it reaches normal operating temps. So yes, when you start the car in the morning, the OBC RANGE may show a drop in distance....but it should increase as the engine warms up.

Report back if this is true (the range increased as the engine warmed up) so that we know that it was only new ownership jitters...and not another issue.

OBC Range Calculation info from owners manual

Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

Last edited by QSilver7; 11-25-2012 at 01:08 PM.
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