When driving in the rain, the BMW brakes automatically, as if the braking system is activated without driver intervention

• No error codes on the dashboard
• The check engine light is not on
• No errors after connecting the diagnostic computer
• Such situations occur often, but only in the rain
• The brakes are blocked, usually it is the rear axle

Automatic braking in the rain is usually caused by a malfunction in the braking system. In some cases, it can also be the result of a software error in the braking system or the lane stabilization system.

Locking wheels are a clear sign that the ABS pump is not working properly

From 2013 to 2020, BMW installed MK100 ABS pumps, equipped with an additional system that turned out to be seriously defective. This function automatically applies light pressure to the brakes in rain to keep the brake discs dry. This function is often called "Brake Drying" or "Automatic Brake Disc Cleaning." It activates when the windshield wipers are on (usually in rain). Fortunately, our company , ABS Control Units in Heemskerk, has developed a solution for this problem.

Car model with ABS pump ATE MK100:

• ABS pump BMW (1er Series, F20) 2010-2019
• ABS pump BMW (1er Series, F21) 2010-2019
• ABS pump BMW (1er Series, F40) 2019
• ABS pump BMW (2er Series, F44) 2019
• ABS pump BMW (2er Series, F22) 2014-2020
• ABS pump BMW (2er Series, F213) 2014-2020
• ABS pump BMW (2er Series, F45) 2014-2020
• ABS pump BMW (2er Series, F46) 2014-2020
• ABS pump BMW (3er Series, F30) 2011-2018
• ABS pump BMW (3er Series, F31) 2011-2018
• ABS pump BMW (3er Series, F34) 2011-2018
• ABS pump BMW (4er Series, F32) 2014-2020
• ABS pump BMW (4er Series, F33) 2014-2020
• ABS pump BMW (4er Series, F36) 2014-2020
• ABS pump BMW (i3, i0) 2014-2020

ABS control units can fix this problem by reconditioning the ABS pump.

Symptoms may include:

• Brakes seizing while driving in the rain
• Vehicle pulls to one side while braking.
• Heating of the brake discs, which can cause them to overheat and become damaged.
• The ABS light or other warning lights, such as ESP, may come on.
• Loss of braking power, causing the brakes to work unevenly and one of the wheels to remain locked.

If you notice any of these symptoms, don't ignore them. They can have serious consequences, such as an accident or a burning brake.

Another cause could be a mechanical or electrical malfunction of the control module that manages the ABS pump. The system then cannot receive the correct signals, which can lead to braking problems.

How do you solve the problem of locking wheels on a BMW?

If the ABS pump in your BMW ATE MK100 fails, it's crucial to diagnose and repair the problem quickly. At ABS Control Units in Heemskerk, we offer comprehensive ABS pump diagnostics and regeneration services.

The process includes:

1. Replacement or regeneration of damaged valves and other mechanical components
2. Flush the ABS pump to remove contamination and prevent further corrosion
3. Checking the ABS pump

Regenerating the ABS pump is a much more cost-effective solution than replacing it. Replacing the entire pump, especially in some BMW models, may require special coding and finding the correct part number, which is expensive and time-consuming. Repair, on the other hand, is a quick and effective solution that allows you to restore the full efficiency of the braking system.

The ABS pump in a BMW is one of the most important components of the braking system. If the pump fails, it can lead to very dangerous situations on the road, such as wheel lockup. Regular maintenance, including changing the brake fluid, is essential to prevent these types of failures. However, if the problem has already occurred, regenerating the ATE MK100 ABS pump is an effective and inexpensive solution that restores the system's full efficiency and ensures road safety.