ASE A4 Suspension and SteeringSteering System Diagnosis and RepairHard
A customer reports a persistent, light rattling noise emanating from the steering column area, particularly noticeable over small bumps or rough roads. The noise is not affected by turning the steering wheel or engine RPM. What is the MOST likely cause?
- AA loose steering column mounting bracket.
- BA worn steering shaft universal joint.
- CA worn steering column upper bearing.
- DA faulty clock spring assembly.
Show answer & explanationAnswer & explanation
Correct answer: A. A loose steering column mounting bracket.
A persistent, light rattling noise from the steering column, especially over bumps and unaffected by steering input or RPM, is highly indicative of a loose steering column mounting bracket. The entire column is allowed to slightly move and rattle against its mounting points.
Why the other options are wrong
- B. A worn steering shaft universal joint usually causes a clunk or binding in the steering feel, especially during turns, not a general rattle over bumps.
- C. A worn steering column upper bearing would typically cause a grinding, squeaking, or binding feel in the steering, not a consistent light rattle over bumps.
- D. A faulty clock spring assembly often causes issues with airbag lights, horn, or steering wheel controls, and occasionally a crinkling noise, but not typically a light rattle over bumps.
Steering Column Rattle
A light, persistent rattling noise from the steering column, particularly over bumps and unaffected by steering input, often indicates a loose steering column mounting bracket.
- Rattling over bumps.
- Noise from column area.
- Not affected by turning or RPM.
Memory trick: Rattle-rattle, bump-bump, column loose, give it a thump!