Electrostatic discharges either from a human body to any other part or between two different objects can cause persistent disturbances or even destruction to sensitive electronics or controls. Voltages of several 1,000 volts are generated.

ESD testing is necessary to receive a CE mark, and for most suppliers of components for motor vehicles as part of required electromagnetic compatibility testing. ESD testers simulate ESD pulses as per EN/IEC 61000-4-2 and other standards requirements.