A 59-year-old female patient referred to Pacemaker Control Center after car accident, in which pacemaker has been potentially damaged by belt in the car. Although device parameters (threshold, lead impedance and sensing) were stable in time and suggested no damage, an IPG test has revealed no pacing – only sensed sinus rythm was observed. Pacing activity was present only a few minutes after application of „Batery and lead measurement” procedure and became lost shortly after. Therefore the device has been considered as damaged and reimplantation was required. The reimplantation has been undertaken sucessfully. This case emphasizes the importance of pacemaker control after potential shock (like in case of car accident) and the role of IPG test in the control.