.....thank you for the advice, I'll 'check back' to see if there's any progress.
and obtain a written cost estimate
Is 550.00 € a reasonable amount for the repair? According to BOSCHler, it is...
it is about a problem with the pump's control unit.
Let's see...
Best regards, Helmuth
P.S.: To top it all off, the airbag light also came on
Apparently, there's sometimes a connection issue under the seat. The fault memory has been cleared, and everything seems to be working again (until the next time). Hopefully.