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- Use a socket wrench to loosen the terminal bolt, then disconnect the negative ground cable from the battery.
*For experienced mechanics*
This is a simple guide to replacing the spark plugs in a 2014 Lexus CT200h car.
Replacing the spark plugs are really important as it ensures that your engine is running smoothly.
Quick note: Make sure to have the correct 10 mm socket. Without it, it's going to be difficult to loosen the spark plugs.
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