The signaling device lights up at failure of a steering hydraulic booster. If the indicator turns on, turn off the engine and start it again.
If the indicator no longer illuminates after restarting the engine, this indicates that the power steering has been restored. If the indicator continues to burn, then the power steering is defective.
Note. If the malfunction indicator light is on, then the power steering is not working. At the same time, driving is still possible. However, turning the steering wheel requires more physical effort from the driver.