What does it mean when the EPS light is on? Can I continue driving?
1 Answers
EPS stands for Electronic Power Steering, which uses an electric motor to assist the driver in steering. The components of EPS vary slightly between different vehicles, but generally include a torque (steering) sensor, electronic control unit, motor, reducer, mechanical steering gear, and battery power source. When the EPS light illuminates, it indicates a fault in the electric power steering system. Symptoms may include heavy steering, unusual noises when turning, steering wheel vibration, or poor steering wheel return capability. It is recommended to promptly visit an auto repair shop for inspection. In such cases, you should safely stop the vehicle as soon as possible and contact a 4S dealership or professional auto repair service, preferably arranging for a tow truck. Unlike hydraulic power steering systems where the hydraulic pump operates continuously during engine operation (increasing fuel consumption by 3%-5%), EPS uses battery power and an electric motor, operating independently from the engine with minimal direct fuel consumption. EPS eliminates hydraulic fluid leakage issues associated with hydraulic power steering systems. Being electronically controlled, EPS is environmentally friendly with lower fuel consumption. Its compact design integrates major components, requiring fewer parts than hydraulic systems (no oil pump, pipes, control valves, or reservoir), making installation easier and more efficient. While hydraulic systems typically operate at 60%-70% efficiency, EPS can achieve over 90% efficiency.
