Stilll need help ?.......... :(

Hi,
I just bought my lovely e34 540i and it has a whole host of problems.....

Brake Pressure warning is on dashboard all the time.

Another yellow warning light is on just above the readout... looks like a brake light with a ring arround it ?? No idea what it is....

When i put it in reverse the parking sensor beeps but then goes straight off.... Generally doesnt seem to work...

My ASC green switch by the gear stick doesnt seem to work.... No light comes on ?

Appart from this everything is tip top and running a dream if anyone can help please email me on itscheapaschips@hotmail.com or post a responce
thanks

BMW 540i Nice...........