What Causes the Toyota Electric Power Steering Warning Light to Illuminate?
1 Answers
The power steering warning light illuminating in yellow indicates partial failure of the steering system, requiring greater effort to turn the steering wheel; if the light turns red, it signifies complete failure of the steering system, necessitating significantly more force to turn the wheel. 1. Possible causes include: Overloading of the steering system leading to excessive wear of the stator and rotor inside the steering pump, resulting in irregular fluid movement and abnormal noises; loose installation of the steering gear or pump on the bracket; internal wear of the steering gear; and improper adjustment of gears and racks. 2. Impact of not straightening the wheels when parking: Failing to straighten the wheels when parking prevents the steering linkage from returning to its neutral position, keeping the steering wheel gears and tie-rod racks under stress. Over time, this causes aging and deformation of steering components, leading to vehicle drift. When parked correctly, the suspension bears uniform load. Not straightening the wheels creates a wheel camber, tilting the vehicle body to one side and placing greater stress on that side's suspension. Prolonged exposure to this condition accelerates the aging and wear of shock-absorbing components in the suspension system.