The hydraulic system's oil pipes are responsible for transporting hydraulic fluid to the rack and pinion assembly. If cracks or ruptures occur in the pipes due to aging, wear, or collision, hydraulic fluid can leak through the damaged areas. Additionally, loose joints and poor seals at the oil line connections can also cause fluid leaks.

If the assembly is not aligned after installation, the wheels may not turn accurately according to the steering wheel's instructions. This may cause the driver to feel that the steering is not sensitive, the steering wheel is tilted, or the vehicle is pulling away when driving in a straight line.