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Old 02-09-2011, 08:19 AM
cinergi cinergi is offline
Officially Welcomed to the 'Fest
Location: Montreal, Canada
Join Date: Apr 2009
Posts: 217
Mein Auto: 2006 525i
I've been taking mostly short trips lately, and I saw my service countdown indicator decreasing more quickly than my actual distance traveled. Then, I took a few longer trips, and the countdown indicator actually increased! So it would seem that the iDrive software has some built-in intelligence to count the number and duration of trips, and applies this information when calculating the service interval! It probably also uses data from the oil condition sensor (it's more than a simple oil level sensor).

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