A car solenoid is an important part of the starter and works as a kind of bridge for electric power to travel from the battery to the starter. The solenoid can be located in the car by using an owner's manual for the car.
To find the solenoid, drivers can look for the red "positive" wire in their battery and follow it to the starter solenoid. Many times when a car does not start, the starter and solenoid can be to blame. Most people will think about checking the battery in their car or their alternator, but the solenoid is a crucial part of the starter and the engine.
The starter solenoid takes the energy from the battery in the form of an electrical current and sends it to the starter motor. This then allows the starter motor to pump the pistons and, therefore, start the engine. Whenever a key is put in to the ignition, a small electrical signal is immediately sent to the solenoid. Without this process, the engine will not start and the vehicle will not run.
If a driver hears a clicking sound when trying to start the engine, this can be a sign of a problem with the battery or the starter solenoid. To replace the solenoid, see a professional car service company.