Why does the steering wheel suddenly become hard to turn on rainy days?
2 Answers
When the steering wheel suddenly becomes hard to turn on rainy days, it is generally caused by a lack of oil in the power steering pump, impurities in the power steering fluid, or a malfunction in the power steering system. It is recommended to have the vehicle inspected and repaired at a 4S shop to diagnose and resolve the issue. Below is an introduction to the automotive power steering system: 1. Classification: Automotive power steering systems are generally divided into two types: mechanical power steering systems and electro-hydraulic power steering systems. 2. Function: The main purpose of the automotive power steering system is to make it easier for the driver to operate the steering wheel when turning. The biggest difference between electro-hydraulic power steering systems and mechanical systems lies in the driving method of the oil pressure pump. The electro-hydraulic system uses an electrically driven electronic pump, while the mechanical system operates in a traditional manner.
Once on a rainy day, I experienced the steering wheel suddenly becoming as heavy as lead! It was absolutely terrifying. This situation is most likely caused by a failure in the power steering system—older cars commonly suffer from hydraulic fluid leaks, where rubber hoses swell and crack when soaked by rainwater, leading to fluid loss and consequently a heavy steering wheel. If the steering wheel also makes a clunking or vibrating noise, it’s almost certainly due to a slipping belt or a failing power steering pump. Pull over immediately and check the power steering fluid reservoir. If the fluid level is critically low, don’t push your luck—call a tow truck for safety.
