What are the symptoms of a damaged power steering control unit in an Audi A4?

1 Answers
DiJordan
07/30/25 4:09am
Audi A4 power steering control unit damage symptoms are as follows: Difficulty in steering wheel return: Mainly due to low tire pressure, misaligned front wheels, deformation of the independent suspension front axle suspension, wear of the suspension ball joint, incorrect adjustment of the hydraulic control valve in the power steering system, hydraulic sticking or blockage by dirt, or the hydraulic control valve centering spring being too soft or damaged. Abnormal noise in the power steering system: Possible causes include loose fixing screws, insufficient oil pressure in the oil tank or clogged oil tank vent, loose or damaged oil pump belt, air in the hydraulic system, overheating of the oil pump, blocked oil pump pipelines, or loose hose connections. Uneven steering effort to the left and right: Possible causes include improper assembly of the hydraulic valve, air on one side of the power cylinder piston, oil leakage or premature unloading on one side of the pressure relief valve, inconsistent tire pressure between the left and right front wheels, or uneven tightness of the front wheel bearings.
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