Fick dessa svar i ett annat forum på engelska. Tror ni de har rätt? Kan jag felsöka själv på något sätt eller hur gör man?
"Nrake actuator probably. I seen some weird stuff like just linear valve offset recalibration. Best to get it diag. Run health check"
"The hammering is the pressure building in the brake actuator and accumulator and does not have to do with the physical pedal or anything visible on the underside of the dash."