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Top 7 Auto Electrical Faults and When to See a Mechanic
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Top 7 Auto Electrical Faults and When to See a Mechanic

Auto electrical faults can emerge abruptly and get the better of your car. Needless to say, you certainly don’t want an electrical fault coming in the way of your driving experience and safety. In fact, as cars become more laden with sensors than ever before, it only makes sense to be more careful with the electrical faults. 

However, faulty sensors are among the many electrical problems that your car can experience. For you to be in control, it makes sense that you know about all the common auto electrical faults. Besides, you also ought to know when to see a mechanic. 


That’s exactly what this blog is about! So, let us get started without further ado

Common Auto Electrical Faults That Can Affect Your Driving Experience 

1. Wiring Faults 

One of the most common electrical faults is the one with the wiring of the car. Symptoms like flickering lights, accessories malfunctioning and a burning-like smell may indicate fault with the wires. 

Now, speaking of the reasons, this can be because of rodents cutting through the wires or corrosion. 

When to see a mechanic?

In case you spot any exposed wires and the burning smell becomes prominent, see a mechanic right away. 

2. Issues With Fuses

Fuses being blown is also a common issue with cars. If the power windows start giving trouble, the lights become unresponsive or the locking systems malfunction, it’s a fuse issue. Fuses can be blown because of short-circuiting or excessive load. 

When to see a mechanic?

If fuses become completely malfunctioning and vital systems start getting affected, see a mechanic. 

3. Faults in the Engine Control Unit or Sensors 

This is something we were talking about in the introduction as well. Modern cars are loaded with useful sensors, but that sort of also increases the chances of electrical faults. Faults in the engine control unit or sensors can be critical. 

Speaking of signs, erratic behavior of the engine, warning lights going on and a declining fuel economy are common symptoms. It is also important to know the reasons for these. Reasons can include glitches with the car software, electrical surges or water penetrating critical systems. 

When to see a mechanic?

If you feel the engine performance has drastically dropped or multiple warning lights go on, don’t think twice! Your car needs to visit a mechanic. 


4. Dying Battery 

Again, a very common issue with cars but for some reason, a lot of people miss the signs. It is a well-known fact that the car battery needs to be replaced after a few years. It is a routine and recurring affair. 

When the engine crank becomes negligible, the headlights don’t respond or electrical parts stop working, the battery is about to die. 

When to see a mechanic?

No points for guessing! The moment you realize that your battery is about to die and is approaching its expiry, go get it changed! 

5. Alternator Fault 

Simply put, the alternator translates mechanical power into electrical energy and acts as the power house for your car. It keeps the battery charged and the battery then powers all that is expected out of it. 

A whining noise from the car, the battery warning sign going on or dim lights may indicate an alternator issue. Usually, alternator faults happen as a consequence of wear and tear of the components. 

When to see a mechanic? 


If the battery issues don’t resolve even after switching it for a new one, you need to get the alternator checked by a mechanic. 

6. HVAC Faults

HVAC stands for heating, ventilation and Air Conditioning. In the simplest manner, an HVAC issue is the fault that causes your AC and Heater to stop working or there is a major drop in performance. Needless to say, it is an important aspect of your comfort and satisfaction with your car. 

Burnt-out fuses or relays can be a potential cause of your HVAC systems not working properly. Besides, your vehicle can also experience this issue because of trouble with the control module. 

When to see a mechanic? 

Well, the answer is simple: when you can no longer bear the discomfort, go see a mechanic and get your HVAC systems rolling again. 


7. Brake Light Switch Failure 

One thing that you don’t want to leave to chance is certainly your safety and the safety of your loved ones. Whenever you press the brake pedal, the brake lights illuminate, right? This is the function of the brake light switch and if this switch fails, it can lead to safety issues. 

Indications of the failure of this switch include both the lights not illuminating on pressing the pedal or staying continuously on. Other symptoms will include situations when the cruise control does not engage or disengage in an effective manner. Lastly, issues with ABS can also hint at a brake light switch issue. 

Speaking of the causes, they include wear and tear, moisture or a misalignment of the pedal. 

When to see a mechanic? 

If your car is experiencing any of the above symptoms, please see a mechanic straightaway. 

So, that is all about the common auto electrical faults that your car can experience. When you know about them beforehand, it certainly helps in early identification and repair. You might not have known about them before you read this blog but now you surely do!