Description
A relay is an electrically operated switch, which uses an electromagnet to operate a mechanical switch mechanism.
Relays are typically used when it is necessary to control a circuit by a low-power signal, while maintaining isolation between the control circuit and the controlled circuit.
Just like any other electro-mechanical device, relays can fail, and when they do you can experience a multitude of problems with your car. Electrical systems can stop functioning, or your car may not run at all depending on which relay has failed.
Don't let such as small component take your Mercedes-Benz off the road. Keep your cars electrical system in top functioning condition by replacing failed or aging relays.