發動機保養：發動機是汽車的心臟，正確的操作和及時的維護保養非常重要。經常短距離行駛可能會導致進氣道和汽缸內部形成積炭，影響車輛性能和燃油效率。因此，清除積炭是換季保養的重要步驟。

　　Engine maintenance: The engine is the heart of a car, and correct operation and timely maintenance are very important. Frequent short distance driving may lead to the formation of carbon deposits inside the intake duct and cylinder, affecting vehicle performance and fuel efficiency. Therefore, removing carbon deposits is an important step in seasonal maintenance. 

　　外觀和內飾保養：雨水中的酸性成分會對汽車漆面造成腐蝕，因此建議進行漆面美容或封釉處理以保護車漆。此外，檢查玻璃水是否充足也很重要，以避免駕駛視線受阻。

　　Appearance and interior maintenance: The acidic components in rainwater can corrode the car paint surface, so it is recommended to perform paint beautification or glazing treatment to protect the car paint. In addition, it is also important to check whether the glass water is sufficient to avoid obstructing the driving line of sight.

　　輪胎保養：輪胎是車輛與地面唯一接觸的部分，其狀態直接關系到行車安全。長途行駛后，應清理輪胎紋內的石子，并檢查輪胎的磨損情況，必要時進行調整或更換。

　　Tire maintenance: Tires are the only part of the vehicle that comes into contact with the ground, and their condition directly affects driving safety. After long-distance driving, the stones inside the tire tread should be cleaned, and the wear of the tire should be checked. If necessary, adjustments or replacements should be made.

　　剎車系統檢查：剎車系統的健康狀況直接影響到行車安全。頻繁使用剎車可能導致剎車片磨損，出現異響或剎車不足的情況應及時檢查和更換。

　　Brake system inspection: The health condition of the brake system directly affects driving safety. Frequent use of brakes may cause brake pad wear, abnormal noise, or insufficient braking, and should be checked and replaced in a timely manner.

　　底盤系統檢查：底盤承受著來自路面的沖擊，長途行駛后應檢查底盤螺絲是否松動，并進行必要的緊固。此外，四輪定位的檢查和調整也是必要的。

　　Chassis system inspection: The chassis is subjected to impacts from the road surface. After long-distance driving, the chassis screws should be checked for looseness and necessary tightening should be carried out. In addition, checking and adjusting the four-wheel alignment is also necessary. 

　　寶馬X5的常規保養項目和費用：寶馬X5的保養包括更換機油、機油濾清器、空氣濾芯、空調濾芯等。不同配件的更換周期和費用有所不同，例如，機油和機油濾清器每10,000公里更換一次，空氣濾芯每20,000公里更換一次。具體費用根據配件的品牌和規格有所不同。

　　The routine maintenance items and costs of BMW X5: The maintenance of BMW X5 includes changing the oil, oil filter, air filter, air conditioning filter, etc. The replacement cycle and cost of different accessories vary, for example, the oil and oil filter should be replaced every 10000 kilometers, and the air filter should be replaced every 20000 kilometers. The specific cost varies depending on the brand and specifications of the accessories. 

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