BMW Z4 convertible top issue with cylinders and pump needing replacement on BMW Z4

Some BMW Z4 owners report experiencing issues with their convertible tops, often linked to pump malfunctions rather than motor failures. These problems may include hydraulic fluid leaks around the hinge cylinder area, indicating a need for cylinder replacement or repair. Additionally, visible fluid leakage or hissing sounds from the actuators and cylinders may suggest blown gaskets that require attention. Some owners have also encountered difficulties with Hall effect sensors on the driver side lift cylinder, which can disrupt the top's positioning. Furthermore, clogged water drains can lead to rust and motor damage, underscoring the importance of regular maintenance. In situations requiring manual operation, using the red Emergency handle can help remove air pockets and facilitate proper functioning of the system.