Clunking Over Bumps? What Your Infiniti QX60 III Is Telling You

Start with the usual suspects

A clunk from the front of your QX60 III over bumps and potholes is usually a mechanical wear issue, not a computer fault. The first parts I’d inspect are the sway bar end links and bushings, then the strut mounts and bearings, lower control arm bushings and ball joints, and outer tie rods. On a heavier SUV like this, pothole impacts can also loosen subframe or steering rack bolts, so those should be checked for correct torque.

• Sway bar links/bushings: most common source of a light “knock” over small bumps.
• Strut mounts/bearings: can clunk and often make noise when turning.
• Control arm bushings/ball joints: usually a deeper clunk with vague steering or uneven tire wear.
• Tie rods and rack mounts: check for play, especially after a hard pothole hit.

There usually isn’t a suspension sensor that causes this noise on a QX60 III. Wheel speed/ABS sensors, steering angle sensors, and harnesses matter if you also have warning lights or stability-control issues, but they don’t explain a pure bump clunk. A lift inspection with a pry bar and a bounce test is far more useful than guessing from the driver’s seat.

Is it safe to keep driving? A light occasional clunk with normal steering and braking is usually not an immediate emergency, but it should be inspected soon because worn suspension parts can accelerate tire wear and affect handling. Stop driving and get it towed if you hear a loud bang, feel steering play or a wandering front end, see a leaking strut, notice uneven tire wear, or get ABS/VDC warning lights after a pothole impact.

This material is AI-generated and for informational purposes only — it does not replace an in-person diagnosis by a qualified mechanic.