Modern cars are basically computers on wheels. With so many electrical systems, sensors, and motors, there’s so much that could potentially go wrong. When something does go awry, pinpointing the ...

This article was updated in August 2025 with new products and information. That little yellow check-engine light is sneaky. Most of the time, you forget it could be there. But when it detects an issue ...

Cars are more than just oil and steel. Modern models have incorporated electronics and computer chips to help manage and optimize their mechanical components. That means maintaining your car's ...

Have your owner’s manual handy. Place your vehicle in “park,” or “neutral” for a manual transmission. Firmly set the parking brake. Download and install the manufacturer’s code reader app to your ...

If you own a car, you need an OBD2 scanner. The most basic function of these devices is to tap into your vehicle’s onboard diagnostics system to read and clear engine trouble codes. But then, ...

You can scan a barcode with your iPhone by using a third-party app. Currently, there are no built-in apps that can read barcodes. Your iPhone can automatically scan QR codes using the built-in camera ...