The BMW maintenance system SIA IV (service interval indicator) is used on X3 models (E83). The service interval indicator is a system subject to constant development which in its development stages has been integrated in various model series such as E85 (Z4) and E46 (3 and M3-Series).
The service indicator appears in the LC display in the instrument cluster's speedometer. The indicator is shown for 5 seconds in the LC display after terminal R is "ON".
Resetting Service Interval Indicator
Resetting the service interval indicator for the oil service and inspection procedures can only be done by pressing the left button (1) in the instrument cluster.
BMW X3 Owners Manual > On-board computer: Trip computer
The vehicle features two types of board computers.
"Onboard info": the values can be reset as
often as necessary.
"Trip computer": the values provide an
overview of the current trip.
Resetting the trip computer
On the Control Display:
1. "Vehicle info"
2 ...