BMW Repair: check control, e34 bmw, coolant level

Question
my car is a 1989 e34 bmw 525i at first id notice that every time i turned on my ignition check control appears see owners manual,and it seems it cannot detect if i have a busted bulb low washer fluid,low steering fluid,coolant level....etc.I changed my check control module, and checked my LCM which is normal.Checked all the fuse in the fusebox and the fuses in the rear seat its all ok.also my cigarett lighter doesnt work fuse is ok...also tried changing my clock to a OBC but it doesnt work...please help.tnx  

Answer
The check control is used to help if a safety problem is or has happened.You can determine which circuit by the bulb that is lit.If it is the brake one many times different manufacturers use a different resistance in the bulbs so they should be the same brand.