See also:

Octane rating tips
Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to eng ...

Warning/indicator lights and audible reminders
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Headlights
Replacing the xenon headlight bulb (if so equipped) WARNING HIGH VOLTAGE When xenon headlights are on, they produce a high voltage. To prevent an electric shock, never attempt to modify or disas ...