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According to the manufacturer, the 2013 Hyundai Elantra should be filled with dot 4 brake fluid. This type of fluid is specifically formulated to safeguard the various metal components inside parts like calipers, wheel cylinders, master cylinders, and ABS control valves. It's crucial for the fluid to prevent corrosion caused by moisture entering the system, which is why corrosion inhibitors are included in the brake fluid formula. If the brake fluid level drops too low, the brake light may illuminate. Brake fluid leaks are a serious issue, as they can result in inadequate stopping power when driving. If you notice a hard-to-press or soft brake pedal, it could be due to low brake fluid levels causing a spongy feeling in your brakes when you apply pressure to the pedal.
The manufacturer recommends using DOT 4 brake fluid for the 2013 Hyundai Elantra.