The SPEED button on a car's dashboard or steering wheel typically controls the speed limiter or cruise control system, depending on the vehicle. In most modern cars like the Ford Focus or Vauxhall Corsa, pressing this button allows you to set a maximum speed limit (speed limiter) or maintain a constant speed without pressing the accelerator (cruise control).
Speed limiter mode prevents the car from exceeding a preset speed, useful in areas with strict speed enforcement or variable speed limits on motorways. Cruise control maintains a steady speed, reducing driver fatigue on long journeys. Some models, such as the BMW iX, integrate adaptive cruise control, which adjusts speed based on traffic flow.
To use the SPEED button:
- Press the button to activate the system.
- Use +/- buttons or the accelerator to set your desired speed.
- The system will hold the speed until you brake or deactivate it.
Always check your vehicle's manual, as functionality varies. For example, in a Tesla Model 3, the SPEED button interacts with Autopilot features, while in a Nissan Leaf, it may adjust regenerative braking levels.