8 of the Most Common Electrical Issues With Cars

Lights, entertainment systems, and critical safety components all have one thing in common - they're electrical features in your vehicle. And if something were to go awry with the electrical system in your vehicle, you'd likely lose the ability to access some or all of these elements.

Ever been stuck with flickering headlights or a car that just won’t start? Electrical issues can be frustrating, but we’re here to help you make sense of them and get back on the road. Read on to learn more:

What Causes Car Electrical Problems?

Electrical problems may stem from various issues, which is why it's so important to diagnose the underlying issue properly so that the proper fix can be administered. Some common causes of electrical problems are bad batteries or bad alternators, but there may also be more unconventional causes behind such issues. For example, wire corrosion or pests chewing on wires can also lead to many problems. Some wires may simply just come loose over time with normal vehicle wear and tear.

If you're experiencing any electrical issues, be sure to have your vehicle serviced right away. A quick fix now can save you from being stranded later—because no one wants to deal with a dead battery in a snowstorm.

When you schedule an appointment with your local GreatWater garage, you can rest assured we'll carefully inspect your vehicle's electrical system to implement the right fix and resolve any underlying issues.

What are the 8 Main Electrical Problems to Know?

Some electrical issues are more common than others. Here's a look at the eight main electrical problems that you should be aware of:

1. Faulty Alternator

Notice your lights dimming when you hit the brakes? That’s a classic sign your alternator might need attention. 

The alternator is a crucial component under the hood of your vehicle. It works by converting energy generated by the engine into electricity to power the various electrical parts and components of your vehicle. The alternator also charges the battery. A bad alternator is likely to lead to various electrical problems throughout your vehicle. Some common signs of a bad alternator include dull or dimming lights, malfunctioning electronics, or even the inability to start your vehicle.

2. Dead Battery

If you have a dead battery, you're not going to be able to start your vehicle. One of the most common car electrical problems, a depleted battery may result from either old age or accidental drainage. If your vehicle has a dead battery, you'll need to either jump-start it or use a battery charger to recharge it before you're able to start your vehicle. If your battery is in poor condition, consider replacing it. 

If your battery is on its last legs, we can test it and recommend the best replacement to keep your car running strong.

3. Bad Spark Plugs

As the name implies, spark plugs provide the spark to ignite the fuel-air mixture and start internal combustion vehicles. However, over time, they may become loose, worn out, or corroded, which can impact their ability to do their job. In some cases, you can clean the spark plugs to remove corrosion. If they're too badly worn, replacement is the best option.

4. Malfunctioning Ignition Coils

Ignition coils generate the voltage necessary to create the spark in the spark plug. If they're not in good condition, your vehicle may start roughly or not start at all. The best way to prevent issues with the ignition coils is to have them regularly checked and inspected.

5. Wiring Problems

The wiring on most vehicles is complex - and one loose connection or frayed wire can result in major problems with one or more of the electrically powered features of your vehicle. Wiring problems can be difficult to diagnose, underscoring the importance of bringing your vehicle to a reliable garage for service.

6. Blown Fuse Box

If a unit or part of the vehicle is consuming too much electricity, it's likely to result in a blown fuse. Fixing a fuse or a blown fuse box often involves replacing the existing unit.

7. Head & Tail Lights Won't Turn On

If your headlights or tail lights won't turn on, the solution could be as simple as just changing out the existing bulbs for new ones. While bulbs are designed to last for thousands of hours, drivers will likely have to have them replaced at some point in their ownership. If the bulbs are in good condition, headlights or taillights not turning on could be the result of a greater wiring issue that needs to be addressed. It's important to have issues with your headlights or taillights addressed immediately. Not only is it a serious safety issue to drive with ineffective lights, but it's also illegal.

8. Foul Odors

If you catch a burning smell in your vehicle, it could be the result of electrical issues with the car. Think of a burning smell as your car’s SOS signal—don’t ignore it. We’ll figure out what’s overheating and fix it fast.

Short circuits tend to be accompanied by a burning smell, while issues with electrical components in the fuel system often emit a rotten egg smell. If you smell sulfur, it could be a sign of a bad battery.

When to Seek Professional Auto Electrical Repair

While you may be able to drive your vehicle fine with electrical problems, it's always best to have such issues addressed as soon as you notice that there might be a problem. As is the case with most things, having issues fixed while they are still minor can help offset further inconvenience and a more expensive repair in the long run. For instance, if your vehicle is having trouble starting, don't wait to have the ignition coils, spark plugs, battery, and alternator serviced. Waiting for service could result in your vehicle not starting one day, an inconvenience that you likely could have avoided by seeking service more quickly.

Electrical issues don’t just fix themselves—addressing them early can save you time, money, and stress down the road. At your locally managed shop in the GreatWater network, we’ll make sure your vehicle’s electrical system is in top shape.

Visit Your Local GreatWater-Affiliated Shop Today!

For more information on common electrical issues that vehicles face and to learn about our auto electrical repair services, contact your local GreatWater-affiliated location today. As a network of locally managed full-service auto repair and maintenance centers, our skilled technicians are equipped with the latest tools to tackle even the most challenging electrical issues—ensuring you leave with a car you can count on. Contact us today for more information and to schedule an appointment.