You might do better starting a new thread...
This is interesting to those who have been involved with SBC threads and resetting counts etc.
I just had the same message on my 2003 SL500. It was last serviced at an independent so I took it back there and they told me the SBC pump had reached the maximum number of pedal presses.
I took it to my local MB dealer who confirmed this to be the issue and despite the car being 6 years old, serviced at an independent and bought from and independent the MB dealer carried out £1500 worth of work and replaced the SBC unit FOC. The dealer told me that they 'reset' the pedal count at each service and the independent had failed to do this hence the maximum had been reached!!! Not sure I was totally comfortable with that.
This is interesting to those who have been involved with SBC threads and resetting counts etc.