What does 'lim' mean when it appears on a BMW 3 Series?
2 Answers
When 'lim' appears on a BMW 3 Series, it indicates that the speed limit function is activated. Introduction to the speed limit function: After enabling this function, the maximum vehicle speed will be restricted to the set value, and even if the accelerator is pressed further, the speed will not increase. Similar to traditional cruise control systems, the speed limit system utilizes the engine control system and automatic transmission control system to regulate speed by reducing the torque output requested by the driver. The software for this system is integrated within the Integrated Chassis Management control module. The Integrated Chassis Management control module communicates with relevant control modules via the FlexRay bus. Activation method: When the vehicle is stationary, pressing the button once will default the speed limit to 30. While driving, pressing it once will record the current speed as the speed limit trigger point. For example, when driving on a road with a 60 speed limit, pressing the button while traveling between 58-65 will set the limit. If the vehicle speed exceeds this value, a warning will appear on the instrument panel. Pressing the LIM button again will deactivate the function.
I've been driving for over a decade and encountered the LIM display on my BMW 3 Series several times. This usually indicates the speed limit function is activated, where you've set a maximum speed limit (e.g., 100 km/h), preventing the car from exceeding that speed, and the throttle becomes lighter when accelerating. A common cause is accidentally pressing the LIM button on the steering wheel while driving, like fiddling with new features on the highway. I find this feature quite useful, especially in urban areas or speed enforcement zones, as it helps avoid speeding tickets. However, it can be inconvenient when you want to accelerate for overtaking. If you don't want to use it, simply press the button again to deactivate it and stop the annoying light. Remember to regularly check your dashboard settings to ensure it's not a system false alarm, which could affect your driving experience.
