宝马汽车在长期使用过程中，一些故障较为常见。发动机漏油是宝马车主常遇到的问题之一，多发生在气门室盖垫、油底壳垫等部位。这主要是由于橡胶密封件长期受高温、机油侵蚀，逐渐老化失去弹性所致。维修时，需更换相应密封垫，并对周边部件进行清洁，防止油污残留影响后续检查。

During the long-term use of BMW cars, some malfunctions are quite common. Engine oil leakage is one of the common problems encountered by BMW owners, often occurring in valve cover gaskets, oil pan gaskets, and other areas. This is mainly due to the long-term exposure of rubber seals to high temperatures and oil erosion, gradually aging and losing elasticity. During maintenance, it is necessary to replace the corresponding sealing gasket and clean the surrounding components to prevent oil residue from affecting subsequent inspections.

另一个常见故障是冷却系统故障，表现为冷却液泄漏、水温过高。宝马冷却系统采用塑料材质的水箱和水管，随着车辆使用年限增加，塑料部件易老化、破裂。当发现冷却液液位下降较快或水温表指针异常升高时，应及时检查冷却系统各部件。若为水箱破裂，需更换水箱；若是水管接头松动或水管破裂，可通过紧固接头或更换水管解决。同时，要注意定期更换冷却液，避免因冷却液变质影响散热效果。

Another common malfunction is cooling system failure, manifested as coolant leakage and high water temperature. The BMW cooling system uses plastic water tanks and pipes, and as the vehicle's service life increases, plastic components are prone to aging and cracking. When the coolant level drops rapidly or the water temperature gauge pointer rises abnormally, all components of the cooling system should be checked in a timely manner. If the water tank ruptures, it needs to be replaced; If the water pipe joint is loose or the water pipe is broken, it can be solved by tightening the joint or replacing the water pipe. At the same time, it is important to regularly replace the coolant to avoid affecting the heat dissipation effect due to coolant deterioration.

此外，宝马的电子系统故障也较为频繁，如车辆无法启动、仪表盘故障灯亮起等。这可能是电池亏电、保险丝熔断或控制模块故障。维修人员需借助专业诊断仪读取故障码，确定故障根源，进行针对性维修，如更换电池、保险丝或修复控制模块等。

In addition, BMW's electronic system malfunctions are also quite frequent, such as the vehicle being unable to start and the dashboard malfunction light coming on. This may be due to battery depletion, blown fuse, or control module malfunction. Maintenance personnel need to use professional diagnostic instruments to read fault codes, determine the root cause of the fault, and carry out targeted repairs, such as replacing batteries, fuses, or repairing control modules.