What Causes the Steering Wheel to Become Stiff in Rain?

[EzraLynn]

It might be due to water ingress in the car's electrical system, requiring inspection and repair at a 4S shop. Below is relevant information: 1. Overview: Generally, open circuits, short circuits, and damaged electrical equipment are common issues in the electrical system. Aging wiring and excessive electrical load in the car are contributing factors. When the engine is running, the ignition coil reaches high temperatures, which can soften, age, or crack the insulation of high-voltage ignition wires, leading to high-voltage leakage or short circuits. 2. Others: Modern cars incorporate increasing electronic control technologies, and the application of automotive intelligence has significantly raised the power consumption of car electronics. The limited load capacity of the car's electrical system makes microcomputers, electronic components, and various sensor circuits susceptible to damage. Additionally, installing numerous additional electronic devices in the car may further burden the electrical circuit.