Where is the ABS fuse located in a BMW 740?
2 Answers
The ABS fuse in a BMW 740 is located above the battery in the trunk. Components of the ABS system: The ABS system mainly consists of four parts: wheel speed sensors, electronic control unit (ECU), hydraulic unit, and ABS warning light. The wheel speed sensors detect the motion state of the wheels and generate sinusoidal electronic pulse AC signals. These signals are then processed by a modulator, converted into digital signals, and transmitted to the electronic control unit. The electronic central control unit (ECU) receives input signals from the wheel speed sensors, uses these parameters to calculate wheel speed, vehicle speed, and slip ratio, determines the wheel state based on the slip ratio, and issues control commands to the hydraulic unit. The hydraulic unit adjusts the pressure in the brake lines according to the control commands, with the adjustment process including pressure maintenance, pressure increase, and pressure decrease.
I've been driving a BMW 740 for several years, and that time when the ABS light came on really gave me a scare. I immediately checked where the fuse was located. There's a black fuse box in the right corner of the engine bay—just lift the cover to see all the small slots. For the specific ABS fuse, you need to check the manual. In my car, it's in the second row, third position. Remember to turn off the engine and disconnect the power first to avoid short-circuit risks. If you pull it out and find it's blown, just replace it with a new one of the same amperage. The location isn't hard to find, but don't mess with other components to avoid causing issues. If the ABS fails, wheel lock-up during emergency braking can be very dangerous, so I always keep some spare fuses in my toolbox. I also make it a habit to glance at the status before driving to avoid trouble on long trips.
