Hi:

I have gotten some intermittent 'brake pressure' warnings, in the end I
was able to reproduce it by increasing the rpm to 2000 in park.

Following the diagnostics of sean750:

http://bmwe32.student.utwente.nl/sean750/brakePressure/BrakePressure.htm

I tried disconnecting electrical connection to the top sensor, and the
warning went away. After the re-connection, I was unable to reproduce
the brake pressure warning. Could a poor electrical connection result
in intermittent warnings?

I see from the web link that Sean concluded that the top sensor was
faulty when the warning went away following disconnection of sensor.
How could he draw this conclusion? Does leaky sensor imply the sensor
is lying?

I did not experience weak power steering or extra effort required to
stop.

I opened the black cannister labelled 'CHF7.1' (hydraulic fluid?), and
found that the fluid level was at the bottom of the filter mesh (1 inch
below the lid).

I can see from the records that the previous owner had the following
brake or hydraulics parts changed during the last year:

1. Brake booster
2. P/S filter
3. P/S return hose
4. P/S pressure hose
5. P/S reservoir hose
6. Brake accumulator
7. Power steering pump

Are there any other parts that can result in wrong brake pressure?

The 2 brake pressure sensors appear to have a slight seepage of
hydraulic fluid, does that mean I should plan to replace the sensors
soon?

I am crossing my fingers and hoping this was just a corrected
electrical fault.

Jan Fure