Changing the OBC language:
The OBC language of the car will sometimes reset itself to German. To change it to whatever you like try this:
1. Turn the ignition to position 1.
2. Hold the CC button down for 10 seconds. Then the next language will appear.
3. Repeat this procedure untill you have the desired language.
The available languages are: Engish UK, English US, French, German, Italian, Spanish
If you want to change the language of the OBC too, you have to unlock it. Details here
http://home.iae.nl/users/bts/obc.htm
Also see my website for other repair tips.
If you speak German as good as English, also visit the German E34 site www.e34.de
Under Schrauberecke they have a lot of good tech tips.
SI reset:
http://ow.no/index.php?option=conten...d=82&Itemid=70
There is also a online owners manual available on this site. Use the search on top. Also a online parts catalog, type in " online ETK ".