What does the semicircular arrow on the remote car key represent?

[Maeve]

The semicircular arrow on the remote car key represents starting the engine. When outside the car, first press the lock button, then hold the engine start button for more than three seconds to start the car. Typically, a remote car key has four buttons with the following functions: unlock, lock, open trunk, and locate car. Unlock button: Pressing the unlock button once only opens the driver's door; pressing it twice unlocks all four doors. Holding down the unlock button for several seconds will simultaneously open all four windows. On some models, the sunroof will also open. Lock button: Pressing it locks all four doors. It also has a hidden feature: remote window closing. Trunk release button: The car key has a button to open the trunk. Long-pressing the trunk release button (or pressing it twice on some models) will automatically pop open the trunk. Locate car button: Some car keys have a red button with a horn symbol or the word "Panic." This button is technically called the "locate car button."