OBC Procedures
Reset Oil/Inspection: Hold odometer reset button with key off. Keep
button held while turning key to position 1. Release when you see
Reset or Re SIA. Press and hold the reset button again until the
display flashes. Release and press the button again and End SIA should
be displayed shortly.
If the minimum fuel consumption or time has not been reached, you may
not be able to reset the Service Indicator.
Change °C/°F: Turn key to position 1, press and hold odometer reset
button, turn key off.
Unlock the OBC: Hold the right tachometer button until you see
"TEST-NR. 01" in the display. Press and release it twice more to
display "TEST-NR. 03" then press the odometer reset button on the left.
This should display "LOCK: ON" or the "SI-L: ????". If it is indeed
locked, sum the last 5 digits of the VIN number and input this number
by pressing the odometer reset button until the desired number is
reached. Once the number is correct, press the right button to unlock
then press it again until you get to test 03. Press the reset button
there and you should see the "SI-L: ????". Considerably more
information about this whole process is at
Ideaphile's E39 OBC page.
.