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 Service & Repair Manual > Front lid: Removing and installing/replacing hinge for engine compartment
Lid
WARNING:
Support engine compartment lid in fully opened position with suitable
apparatus. Risk of injury.
Necessary preliminary tasks:
Remove left-hand GAS PRESSURE SPRING for engine compartment lid
REMOVE left microfilter housing cover
Shown on left side. Right side identical.
Remo ...