Electrical Systems

Auto Electrical System Repair

For decades, vehicle electrical systems have been responsible for starting your car, recharging the battery and providing power to components like lights and power windows. Nowadays, vehicle electrical systems handle more features like power seats, heated seats, navigation systems and entertainment centers. Even components like steering and braking are electronic.


Signs of Electrical Problems in Car

An electrical problem can stem from issues related to the wiring,  alternator,  battery or more. The most common signs of electrical problems in your car include:

Your engine won’t start.
You are experiencing battery problems.
Your headlights and other lights are not working properly.
Your fuses are blowing out.
You smell burning plastic.

Electrical issues can create expensive repair if they are not addressed quickly. If you are experiencing any of these symptoms, come to Sant Automotive in Webster Groves for a diagnosis.


How to Diagnose Electrical Problems in a Car

Your car is highly reliant on complex electrical systems. Therefore, problems are commonly misdiagnosed, and it is important to request a thorough inspection. We start by performing an interview with our customer to let them describe the symptoms. Then, we will check any error codes with our diagnostic scanner. Troubleshooting common electrical problems would start with us popping the hood and inspecting your battery. We will also check the alternator and the charging output. Finally, we will take a look at your spark plugs, wires and other electrical components.


Electrical Failure in Car

Causes of electrical failure could be a dying battery, a failing or overcharging alternator, wires coming loose, and more. These problems will definitely harm other systems in your vehicle if they are not addressed right away. Get your electrical system under control and stay on the road at Sant Automotive.


How Does a Car Electrical System Work?

Basic electrical systems consist of a battery, alternator, ignition switch and voltage regulator. When you turn the key in the ignition, your battery gives current to the starter, which powers the alternator and charges the battery in return. Your car electrical system is a closed circuit with the battery as the independent power source. Current flows from the battery along a cable to your other systems, and then back to your battery. If you would like to read details about how that all comes together, check out this pdf on Automotive Electrical Circuits and Wiring Topics written by the US Navy.


Basic Auto Wiring

Your car runs on a direct current system (DC), as opposed to your home with runs on alternating current (AC). Direct current is a single wire system. In the most basic terms, your car electricity flows from the positive battery terminal, through your cars electrical components and back to your battery through the negative terminal (ground) in a single direction.


Who Does Electrical Work on Cars?

Increased complexity means that a trained automotive professional equipped with accurate technical information, wiring diagrams, and diagnostic equipment should work on your vehicle electrical system. You should find an automotive electrical specialized well-versed in the new electronic components of modern automobiles. At Sant Automotive, we have you covered! If you are looking for an automotive electrical technician in the St. Louis area, give us a call at 314-849-2900.


For more information, check out the video below by one of our auto parts providers AC Delco: