OK, these are the two methods to try. Method #1 is what works on my car. First, this assumes that your INFO and SELECT buttons are working. If not, then you need to code those with NavCoder. The other thing to remember is that the sequence must be initiated immediately after you turn the radio on.

Method #1

1. Turn the radio off.
2. Turn the radio on.
3. Within 8 seconds, press the 'INFO' button.
4. From the Info screen, select RDS (choose PTY on E38).
5. Press and hold the BM control knob (right side knob) for at least 8 seconds.
6. Scroll through functions using the station search buttons "< >".
7. Selections for the desired service function can be made by using the radio station preset buttons #1-6.
8. Turn the radio off to exit service mode.

Method #2

1. Turn the radio off.
2. Turn the radio on.
3. Immediately press and hold the 'Select' button for at least 8 seconds. The screen will switch to Service Mode.
4. The screen will now show the serial number of the radio.
5. Use the "< >" buttons to select the desired service function.
6. Selections for the desired service function can be made by using the radio station preset buttons #1-6.
7. Turn the radio off to exit service mode.

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2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input