BMW 5 Series Parking Brake Motor Replacement?

[VanZane]

Release the brake button, remove the tire, and take off the brake caliper. Remove the rear brake caliper, use a wrench to detach the electronic parking brake motor, then reattach the caliper. Use a specialized brake tool to push the brake caliper back into place. Install the new brake pads, mount the electronic parking brake motor onto the caliper, press the electronic parking brake button several times after installation, and perform a road test if necessary for reset.

[DiAyla]

When replacing the electronic parking brake motor for a BMW 5 Series, I found the process not too difficult but preparation is key. First, disconnect the car battery to prevent accidental power activation. Remove the interior trim panel in the trunk area to expose the parking brake assembly. The motor is usually fixed to the side of the frame and requires a hex key to remove the screws—be careful not to forcefully pull the wiring harness connectors. When installing the new motor, align the mounting holes and tighten securely, then reconnect the power and test to ensure the parking brake functions properly. Don’t forget to use a diagnostic tool for calibration to avoid the fault light turning on. The part can be found online for a few hundred bucks, but make sure to choose BMW-certified ones to avoid counterfeit issues. The whole process takes about two hours but saves hundreds in repair costs. I recommend checking the repair manual or tutorials beforehand—even beginners can handle it.

[VanAlan]

This is a matter of safety, and I must remind everyone that the electronic parking brake is a critical part of the braking system. Replacing the motor yourself carries high risks. BMW's high level of integration means the motor is connected to the module. If a short circuit occurs in the wiring, it could blow a fuse or even cause the parking brake to fail. During accident investigations, I've seen cases of vehicles rolling away due to improper operations. I recommend going directly to an authorized 4S dealership—they use specialized tools for calibration, ensuring safety and reliability. Although the cost may be higher, your life is far more valuable. Additionally, have related components like sensors or controllers checked to prevent potential hazards. Make sure the parking brake functions properly after each use—don't cut corners and regret it later.

[DeKhloe]

From a cost perspective, doing it yourself could save a few hundred. The part price ranges from 300 to 800 yuan, with no labor fees. Just keep a wrench at home. However, a 4S shop quotes around 2000 yuan, while a repair shop charges 500 to 1000 yuan. I've done the math: if the motor only has slight noise, cleaning and lubrication can extend its life—no need to rush to replace it. If it's completely broken, assess your skill level before attempting the repair; otherwise, leaving it to experts is more reassuring. Compare the budget and choose the optimal solution. Safety comes first—don't risk big losses for small savings.