What is the BMW 3 Series lim function?
3 Answers
BMW 3 Series lim is the speed limit function. Below is part of the introduction about the speed limit function: 1. The speed limit system was first applied as a standard configuration system in the European F10. This system can limit the vehicle speed between 30~230km/h. When the speed is below the set limit, the vehicle can still operate normally. 2. Similar to the traditional cruise control system, the speed limit system uses the engine control system and automatic transmission control system to control the speed, which means reducing the torque output requested by the driver. The system's software is integrated within the Integrated Chassis Management control module. The Integrated Chassis Management control module communicates with relevant control modules via the Flex-Ray bus.
The LIM function in the BMW 3 Series refers to the speed limiter, which I frequently use to set a maximum speed limit during highway or urban driving to prevent accidental speeding. For example, when driving on unfamiliar roads, I set it to 50 km/h, and the car won't exceed this speed, automatically controlling throttle output to spare me the worry of fines. This feature is very simple to operate: press the LIM button on the steering wheel, then use the rotary knob to adjust the speed value. Once activated, a prompt will appear on the dashboard. The benefits are that it makes driving more relaxed—I don’t have to constantly monitor the speedometer and can focus on road conditions—and it also helps save fuel by avoiding sudden acceleration impulses. As a long-term owner, I’ve found it particularly useful in traffic jams or during long trips, reducing fatigue. One potential note is that it’s not fully automatic cruise control; manual deactivation is required for temporary overtaking. But overall, it’s an intelligent design that enhances safety and comfort.
On the BMW 3 Series, LIM stands for Limiter in English, and I particularly enjoy the sense of control this feature provides. After setting a speed limit with it, the car intelligently restricts acceleration to prevent speed surges. Operationally, the button is conveniently located next to the steering wheel—press LIM, adjust the dial to your desired value, say 80 km/h, and it's activated. In use, I find it more flexible than traditional cruise control because while cruise maintains a fixed speed, LIM only sets an upper limit, allowing me to decelerate normally. Technically, it relies on the electronic system to monitor the engine and doesn’t require complex maintenance. As someone who frequently drives on highways, this helps me avoid speeding tickets and enhances stability in rainy or foggy conditions, reducing the risk of skidding. However, a reminder: don’t rely on it entirely; manual operation ensures optimal performance.
