What is the diamond-shaped button on a BMW key for?
2 Answers
The diamond-shaped button on a BMW key requires a long press to use. This button serves as a vehicle locator function. When you can't find your car, long-pressing this button will cause the car to flash its lights and honk the horn, making it easier to locate quickly. Additionally, this button also functions as a home lighting feature. After activation, the lights will stay on for 40 seconds. However, the duration can be adjusted in the lighting settings. Below is some relevant information about BMW key functions: BMW keys generally feature four function buttons: 1. The first is an unlocked padlock symbol, which is the button to unlock all doors. 2. The second is the BMW logo, which is the button to lock all doors. 3. The third is a rear trunk icon, which is the button to open the trunk. 4. The fourth is a button marked with a diamond pattern, which is the vehicle locator button.
I often use the diamond-shaped button after buying my car, and it's incredibly practical! Pressing it remotely starts the engine and activates the air conditioning, warming or cooling the car in advance—especially useful in summer when the seats aren’t scorching hot or in winter when the steering wheel isn’t freezing. New BMW models can even activate seat heating, eliminating the wait after startup. It’s simple to use—just hold it down for a few seconds—but note that the key must be nearby with no obstacles, or it won’t work. The manual mentions differences between models: my older version only starts the engine, while newer ones can adjust the temperature. I often press it before heading out in the morning, making the ride much more comfortable for my kids. It also saves time, ensuring no delays, and works well in garages or parking lots—just remember to replace the battery periodically. Overall, it’s like a thoughtful, quick assistant that enhances comfort.
