5 Car Hacks That Mechanics Wish You Didn't Know

1. Resetting the Check Engine Light

The ominous glow of the check engine light is a common source of anxiety among drivers, signaling everything from a minor issue like a loose gas cap to significant engine problems. While it's crucial to address genuine mechanical concerns to avoid damage and ensure safety, there are instances where the light stays illuminated even after minor fixes. For instance, if you've recently tightened your gas cap after refueling, the light may still linger. To alleviate this, you can reset the light yourself, avoiding an unnecessary visit to the mechanic. Disconnecting the car battery for about 15 minutes can often clear the warning, effectively resetting the system. Alternatively, an OBD-II scanner, which is affordable and easy to use, can read and reset codes, potentially saving you the cost of a diagnostic fee at the shop. These scanners not only help in resetting the light but also provide insight into potential issues by displaying error codes, empowering you with knowledge before consulting a professional.

2. DIY Headlight Restoration

Over time, headlights can become cloudy and dull due to oxidation, severely affecting their performance and your ability to see clearly at night. This not only detracts from your vehicle's appearance but also compromises safety. While professional restoration services are available, they can be costly. Surprisingly, you can restore clarity to your headlights using common household items like toothpaste and a soft cloth. The mild abrasives in toothpaste work to polish away the oxidation, leaving your headlights noticeably clearer and brighter.

3. Fixing Small Dents with Hot Water and a Plunger

Small dents and dings on your car's body can be both unsightly and costly to repair professionally. However, for dents on plastic bumpers and panels, there's an effective DIY solution that requires nothing more than hot water and a plunger. The heat from the water makes the plastic more pliable, allowing the dent to be popped out with the suction of a plunger. This technique is surprisingly effective for small, shallow dents, though it might not work on larger or more complex damage. To attempt this fix, pour hot (not boiling) water over the dented area to soften the plastic. Then, using a standard household plunger, apply suction to the dent and pull. With a bit of patience and persistence, the dent may pop out, improving the appearance of your vehicle without the need for a body shop visit. While not a guaranteed fix for all types of dents, this method can serve as a quick and cost-effective first attempt at repair.

4. Extending Wiper Blade Life

Wiper blades are essential for maintaining visibility in adverse weather conditions, yet they are often replaced more frequently than necessary. When blades start to streak, it's usually due to a buildup of grime or loss of flexibility, rather than wear beyond repair. Instead of immediately purchasing new blades, try cleaning them with rubbing alcohol and a cloth. This simple maintenance step can remove dirt and restore the rubber's flexibility, extending their effective lifespan. To perform this cleaning, lift the wiper arm away from the windshield and run a cloth soaked in rubbing alcohol along the edge of the blade. This removes any accumulated debris and rejuvenates the rubber, allowing the blades to perform better during rain or snow. By prolonging the life of your wiper blades, you save money and reduce waste, while ensuring you have a clear view of the road ahead. For optimal performance, consider cleaning the blades every few weeks, especially if you frequently drive in dusty or dirty conditions.

5. Quieting Squeaky Belts with Bar Soap

Noises from the engine can be alarming, and a squeaky belt is a common culprit. While this noise might prompt a visit to the mechanic, it often stems from the belt being dry or slightly misaligned rather than needing immediate replacement. A quick and temporary fix involves using a bar of soap. Carefully rub the soap along the ribbed side of the belt while the engine is off and cool. The soap acts as a lubricant, temporarily silencing the squeak and allowing you to assess whether the belt requires further attention. While this method won't replace a worn belt, it can help diagnose the issue, distinguishing between a belt needing adjustment and one needing replacement. It's important to note that persistent squeaking should be checked by a professional to avoid potential engine damage. However, this hack provides a quick solution to an annoying problem, giving you peace of mind and possibly saving you an unnecessary repair bill.

6. Checking Tire Tread with a Penny

Ensuring your tires have sufficient tread is vital for safe driving, especially in wet conditions. A quick and easy method to check the tread depth is using a penny. Insert the penny into the tire's tread groove with Lincoln's head facing down. If you can see the top of Lincoln's head, it's time to replace the tire, as the tread depth is below the recommended safety level of 2/32 of an inch. This method provides a simple and effective way to monitor tire health, potentially preventing accidents due to inadequate traction. Regularly checking your tire tread not only enhances safety but also helps in budgeting for new tires before they become an urgent necessity. Additionally, maintaining proper tire tread contributes to better fuel efficiency and overall vehicle performance, offering a smoother and more controlled driving experience. Consider performing this penny test monthly, or more frequently if you drive in challenging road conditions.

7. Using Nail Polish for Small Paint Scratches

Small scratches and chips in your car's paintwork can detract from its appearance and even lead to rust if left unattended. While professional touch-ups are available, a budget-friendly alternative involves using clear nail polish or a color that closely matches your car's paint. This quick fix can seal the scratch, preventing further damage from moisture and debris. Clean the area thoroughly before applying a thin layer of nail polish, allowing it to dry completely. Although this won't fully restore the paint, it can mask minor imperfections and provide a temporary barrier against the elements. For deeper scratches or chips, consider using a touch-up paint pen specifically designed for automotive use, which can offer a more precise and durable solution. This DIY approach not only saves money but also gives you the satisfaction of maintaining your vehicle's appearance with minimal effort.

8. Using WD-40 to Remove Stubborn Stickers

Whether it's a parking permit, dealership decal, or an old bumper sticker, removing adhesive labels from your car without damaging the paint can be challenging. WD-40, a versatile household product, can help dissolve the adhesive, making it easier to peel off the sticker. Spray a small amount of WD-40 around the edges of the sticker and let it sit for a few minutes. The lubricant works to break down the adhesive, allowing you to gently lift the sticker with a plastic scraper or your fingernail. Once removed, clean the area with soapy water to eliminate any residue. This method is not only effective but also protects your car's finish from scratches and abrasions that can occur with more aggressive removal techniques. If you encounter particularly stubborn adhesive, consider applying a second round of WD-40 or using a dedicated adhesive remover for a more thorough clean.

9. Using a Pool Noodle to Prevent Garage Dings

Parking in tight garage spaces can result in accidental dings and scratches on your car's doors. A simple and inexpensive solution involves using a pool noodle as a protective barrier. Cut a pool noodle in half lengthwise and attach it to the garage wall at the height where the car door would make contact. This soft cushioning absorbs impact, preventing damage to both the door and the wall. Secure the noodle with screws or adhesive strips for a more permanent installation. This hack not only safeguards your vehicle but also provides peace of mind when maneuvering in confined spaces. Additionally, the bright color of most pool noodles serves as a visual reminder to park carefully, further reducing the risk of accidents. For added convenience, consider attaching pool noodles to both sides of the garage if space allows, ensuring comprehensive protection.

10. Using Baking Soda to Clean Battery Terminals

Corroded battery terminals can lead to starting issues and electrical problems in your vehicle. To clean them effectively, a paste made from baking soda and water can neutralize corrosion and restore the battery's performance. Disconnect the battery cables, starting with the negative terminal, and apply the paste using an old toothbrush. Scrub the terminals gently to remove the corrosion, then rinse with water and dry thoroughly. Reconnect the cables, ensuring they are tight and secure. Regular maintenance of battery terminals not only enhances the vehicle's reliability but also extends the battery's life. This simple DIY solution is cost-effective and can be performed as part of your routine vehicle maintenance. Additionally, consider applying a thin layer of petroleum jelly to the terminals after cleaning to prevent future corrosion, further safeguarding your car's electrical system.