4 Signs Your BMW Master Cylinder Is Failing in Bellingham

Now the modern cars like BMW have an inevitable component in the brake system known as the master cylinder that can convert the mechanical pressure into hydraulic pressure applied on the brake pedal to squeeze the brake pads for slowing down the car. Like other components of the brake systems, the master cylinder also failed for many reasons.

When the master cylinder of the BMW is failed, you will notice that the brake system is unable to function properly. At this point, you have to consult with a reputed mechanic for inspecting the master cylinder and replace it if needed.

What do you mean by master cylinder?

In general, the braking system of the car has many components such as brake pads, brake calipers, a brake rotor, and a master cylinder. When you press the brake pedal, the master cylinder is sending brake fluids to the brake caliper with high pressure. For performing the whole function, the master cylinder has two pistons and two springs.

After receiving the fluid, the brake caliper squeezes the pads against the rotor for slowing down the wheel rotation. Moreover, the brake fluids are transferred through the brake lines to the calipers to perform the braking process. Once you release the brake pedal of the car, the springs are automatically returning to their previous position.

Signs of the failed master cylinder

A small problem within the master cylinder of the car could impact the whole functions of the braking system. The following points define the signs of failed master cylinder of the BMW.

Contaminated brake fluid

Over regular use, the rubber seal on the master cylinder is damaged. As a result, you will notice several problems in the car such as spongy brake pedals and contaminating the brake fluid. The main purpose of the rubber seal of the cylinder is to seal it from outside materials such as dirt, debris, water, and other foreign particles.

If the outside contaminants are mixed with the fluid, then you will face many problems stopping the car because it messes up with the hydraulic pressure of the fluid. Due to these reasons, your car takes longer to stop. At this point, you have to examine the brake components by a reputed mechanic.

The brake pedal feels spongy

If you notice that your brake pedal feels spongy, squishy, and less responsive, as well as sinks when you step on the pedal, then make sure that it has problems within the master cylinder. When it happens, you will find that the sink brake pedal of the car is unable to return to its regular position.

These spongy brakes are also caused in your car due to the problem with the seals. All we know is that the seals are keeping the fluid-tight for preventing it from leaking. If the seals of the master cylinder are damaged or seep out the fluid, then the caliper is ultimately unable to receive enough fluid to squeeze the rotors and slow down the car.

Brake fluid leakage

Due to the leakage from the brake lines and the master cylinder, you will notice that the level of the brake fluid is lower down in your BMW. In this case, you will find that the brake fluid of the master cylinder founds below the reservoir tank. Generally, the brake fluids are leaking from the valves in the brake circuits or the fluid control valve.

All these components are commonly taking the fluid to the reservoir tank and flow to the master cylinder. Eventually, you will find that the wear and tear may damage the brake lines and cause leaks.

Activated brake warning light

When you put your step on the brake pedal, the generated pressure is transferred to the master cylinder for pushing the pistons in the cylinders. Through these movements, the brake fluid is directly flowing through the brake lines and other brake components of each wheel.

Every brake fluid reservoir has a sensor that can share information about the amount of brake fluid with the onboard computer. If the brake fluid reservoir has a lower amount of fluid in the reservoir tank, the brake warning lights turn on. When it happens in your car, check the master cylinder by a mechanic.

Conclusion

When the master cylinder of the BMW is failed, take care of it properly. Without spending a few hundred dollars repairing the cylinder, it's much easier to replace it on time. If you are currently living in Bellingham, then take your BMW to a professional mechanic to diagnose the master cylinder and get the issue fixed as soon as possible. In this way, you can prevent serious accidents on the road of your car.

Mint Automotive is one of the most sought after German Automobile Specialists. At Mint Automotive we are dedicated to German automobile servicing and repairing which includes Audi, BMW, Mercedes-Benz, Mini Cooper and Volkswagen.