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From RonStygar_at_aol.com Wed Jul 1 00:29:24 1998
From: RonStygar_at_aol.com
Date: Wed, 1 Jul 1998 03:20:54 EDT
To: 318ti-compact-list_at_lists.tvfcanada.com, BMW-digest_at_mailgate.wizvax.net
Cc: dale_at_unofficialbmw.com
Subject: Service Interval Indicator Calculation
From the 1996/97 BMW Fast Facts book. Under BMW features, all models, as
written.
The SII microprocessor of BMW models to date received inputs from the
starter, tachometer, odometer and an engine temperature sender; on the basis
of these signals, it calculated the mileage when maintenace would be required.
In the 1996/97 models, the microprocessor's programming has been simplified;
it now considers only the vehicle's fuel consumption, which BMW engineers have
found is an adequate predictor of service needs (higher fuel consumption =
harder use). With either logic, the SII display in the instrument cluster
indicates the time for maintenance. Owners should follow the recommendations
of the SII and ignore anyone who recommends servicing at fixed intervals.
Ron_at_unofficialbmw.com, FLI BMW, FLY BMW, Marlborough, CT
http://www.unofficialbmw.com/ronstygar.html
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