O'Fallon Auto Repair

As automotive technology continues to evolve, one of the most significant advancements in modern vehicles—especially hybrids and electric cars—is regenerative braking. This innovative system not only improves efficiency but also extends the life of traditional braking components. But how does it work? What are its benefits? And what kind of maintenance does it require? In this post, we’ll explore everything you need to know about regenerative braking—and why Hillside Auto Repair is your trusted partner for diagnosing and maintaining this cutting-edge system. What Is Regenerative Braking? Regenerative braking is an energy-recovery mechanism that converts kinetic energy into electrical energy during deceleration, storing it in the vehicle’s battery for later use. Unlike traditional friction brakes, which waste energy as heat, regenerative braking recaptures some of that energy, making your vehicle more efficient. This technology is pr ... read more

Modern cars come with increasingly sophisticated climate control systems, but do you really know how to use them? Those buttons and settings aren’t just for show—they can improve comfort, boost efficiency, and even extend the life of your A/C system. In this guide, we’ll break down what each setting does, when to use it, and how to get the most out of your car’s A/C. And if your system isn’t performing as it should, Hillside Auto Repair is here to help—with expert diagnostics, maintenance, and repairs, all backed by a nationwide 3-year/36,000-mile warranty. "Auto" Mode: The Smart Way to Stay Comfortable Many newer cars feature an "Auto" climate control setting, but what does it actually do? ✅ How It Works: - Automatically adjusts fan speed and temperature to maintain your desired cabin climate - Uses sensors to account for sunlight, outside temperature, and humidity - Can improve efficiency by reducing u ... read more

Your car’s air conditioning system is one of those modern luxuries you don’t appreciate—until it stops working. Unfortunately, there’s a lot of misinformation floating around about how A/C systems operate, how to maintain them, and when they need repairs. Today, we’re busting five common car A/C myths so you can stay cool, save money, and avoid unnecessary repairs. And if your A/C isn’t performing like it should, Hillside Auto Repair is here to help—with expert diagnostics, top-tier service, and a nationwide 3-year/36,000-mile warranty on all our work. Myth #1: "You Only Need to Service Your A/C If It Stops Blowing Cold Air”Fact: Waiting until your A/C completely fails is a costly mistake. Just like your engine needs oil changes, your A/C system benefits from regular maintenance. Over time, refrigerant levels drop, seals dry out, and contaminants build up—long before you notice weak coolin ... read more

As summer approaches, there’s nothing worse than turning on your car’s air conditioning only to be greeted by warm, stale air. A properly functioning A/C system isn’t just about comfort—it’s about safety, fuel efficiency, and preserving your vehicle’s longevity. In this in-depth guide, we’ll break down everything you need to know about automotive A/C service, including the differences between R-134a and R-1234yf refrigerants, why certified professionals should handle your A/C repairs, and how Hillside Auto Repair can keep you cool all season long—backed by a nationwide 3-year/36,000-mile warranty on parts and labor. Why A/C Service Matters Your car’s air conditioning system is more complex than most drivers realize. It’s not just about refrigerant—it’s a network of components including the compressor, condenser, evaporator, expansion valve, and seals, all working in harmony. Over time, refrigeran ... read more

Your vehicle’s fuel pump is a centerpoint of your engine’s performance, quietly delivering the precise amount of fuel needed for combustion. When it fails, your car’s reliability—and your peace of mind—can take a serious hit. Understanding how fuel pumps work, recognizing early warning signs of failure, and knowing when to seek professional repair can save you from costly breakdowns and keep your vehicle running at peak efficiency. What Is a Fuel Pump? The fuel pump is a critical component of your vehicle’s fuel delivery system, responsible for transferring gasoline from the tank to the engine at the correct pressure. Most modern vehicles use electric fuel pumps, which are typically mounted inside the fuel tank (submerged in fuel for cooling and lubrication). Older vehicles may have mechanical fuel pumps driven by the engine’s camshaft. A properly functioning fuel pump ensures: - Consistent fuel pressure for optimal combus ... read more