Methods for operating a vehicle comfort system, and vehicle comfort system

A method for operating a vehicle comfort system, which comprises

• i) a vehicle seat (1) with one or more fluid-fillable bladders (B) housed in the seat part (3) and/or backrest (2) thereof,
• ii) a control system (10), and
• iii) for each bladder (B), at least one corresponding valve (5, 7) controlled by the control system (10) by means of PWM signals generated by it,
• wherein the control system (10) controls the filling or emptying of the fluid-fillable bladder(s) (B) according to specified program information by opening a controlled valve (5, 7) according to the program information by means of a PWM signal within a time interval (T) so that a fluid flows into the associated bladder (B) and the internal pressure of the bladder (B) is thus increased to an upper setpoint (p1), or escapes from the bladder (B) and the internal pressure within the bladder (B) is thus decreased to a lower setpoint (p2), wherein, within the time interval (T), the control system (10) opens and closes a valve (5, 7) associated with a bladder (B), in an oscillating manner by means of at least one sequence of PWM signal pulses, which are preferably short in duration in comparison to the time interval (T).