Tanks are prone to corrosion, deformation, or cracks. Long-term exposure to corrosive liquids or exposure to rain and salt spray in outdoor environments can cause gradual corrosion on the surface and interior of the tank. If not promptly addressed, this can lead to leakage. Impact, squeezing, or prolonged loading beyond the designed range during transportation can cause deformation and, in severe cases, cracks, compromising the tank's seal and structural stability, and even causing leakage.

Connections and sealing components often experience seal failure and loose joints. If the sealing rings at the valve and pipe connections age or wear after long-term use, or if they are not properly tightened during installation, this can degrade sealing performance and lead to fluid leakage. If the connecting components between the tank and the tractor, such as the towing pins and bolts, become loose due to prolonged vibration, this will not only affect driving stability but also exacerbate seal wear during bumpy rides, further increasing the risk of leakage.

Liquid level monitoring and transfer components are prone to failure. If liquid impurities adhere to the liquid level sensor or poor wiring contact affect the level sensor, it will display inaccurately or not at all, making it impossible to accurately determine the liquid level in the tank. If internal parts of transfer components such as oil pumps and valves become worn, stuck, or clogged by liquid impurities, they will malfunction and fail to transfer fluid properly, affecting the efficiency of the trailer tank and, in severe cases, causing component damage.

Components related to driving safety are prone to failure. If tires are subjected to uneven load, have abnormal tire pressure, or are excessively worn, they can cause blowouts, increased bumps, and overall stability. If suspension components such as springs and shock absorbers become aged, broken, or loose, they can cause the trailer tank to vibrate violently while in use, exacerbating the tank's wobbling and potentially damaging other components. Braking failure or delayed braking can significantly increase driving safety risks.