Procedure notes
The center brake light on your 2012 BMW 550i xDrive, which is sometimes referred to as the third brake light or stoplight is also known as the center high mount stop lamp (CHMSL). The 3rd brake lights up when you hit the brake pedal and helps prevent you from being rear ended by the cars behind you. See how to change the center brake light (CBL) on your BMW 550i xDrive in this how-to video. Be careful not to touch the bulb directly with your fingers when you replace the center brake light bulb on your 550i xDrive, touching the bulb causes the it to burn out quicker.
A burnt out center brake light bulb in your 550i xDrive is an excuse for a police officer to pull you over. Check your bulbs frequently and change burnt bulbs promptly. Sometimes the stoplight has multiple bulbs in the housing whereas in other vehicles, the 3rd brake light is an LED brake light strip that must be replaced all at once.
查看中文对照 · Chinese translation
你的 2012 宝马 550i xDrive 车的中间制动灯，有时也被称为第三制动灯或停车灯，也称为中间高位刹车灯（CHMSL）。
踩刹车时，3刹车灯亮起，有助于防止后方车辆追尾。 参见本操作视频，了解如何更换您的 宝马 550i xDrive 的中央制动灯（CBL）。
更换550i xDrive车辆中央制动灯灯泡时，务必避免手指直接接触灯泡，否则会导致灯泡烧坏速度加快。
你的550i xDrive中控刹车灯泡烧坏，是交警拦车的理由。 经常检查灯泡，一旦发现烧坏立即更换。 有时停车灯罩内包含多个灯泡，而在其他车辆中，3制动灯是LED制动灯条，必须整体更换。