Silence That Clunk: Fixing Front Suspension Noises in Your Prado 120

Why Your Prado 120 Clunks Over Bumps

If you hear a dull clunk from the front end when going over potholes or speed bumps, it’s almost always a mechanical loose part in the suspension. On the Toyota Land Cruiser Prado 120, the most common culprits are sway bar links (especially if you hear it on one side), followed by worn ball joints or control arm bushings. Less often, it could be a failing strut mount or loose stabilizer bar bushings.

Parts to Check First

• Sway bar links – Easy to inspect: with the tires on the ground, grab the link and shake it. If there’s play or the rubber boot is torn, replace them.
• Lower ball joints – Lift the front end, grab the tire at 12- and 6-o’clock, and rock it. Excessive movement means a worn ball joint.
• Control arm bushings – Look for cracked or perished rubber around the pivot points. A clunk when braking or accelerating suggests bushing wear.
• Strut top mounts – If the noise is more of a “thud” when turning and going over bumps, the mount bearings may be shot.

Is It Safe to Keep Driving?

In most cases, a clunk alone won’t leave you stranded immediately, but it’s not safe long-term. A worn ball joint can separate, causing loss of steering control. Loose sway bar links affect handling but are less critical. I recommend having it looked at within a few days; avoid off-road or aggressive driving until fixed.

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