Automobile starter solenoid or linear solenoid i.e. electromechanical solenoid. Containing an electromechanical solenoid that actuates a pneumatic or hydraulic valve or solenoid switch, this is a special type of relay that uses an electromechanical solenoid internally to operate an electrical switch;
All modern cars also use a starter solenoid to move the starter pinion gear into mesh with the engine's ring gear.