Parts for your 2018 Toyota Crown-Bump stops

2018 Toyota Crown bump-stops — what they do and when to replace them

Based on technical sources, the 2018 Toyota Crown is fitted with bump-stops. Toyota’s service literature for the Crown (S210 late models and the S220 launched in 2018) shows “shock absorber bumper” components integrated with the front and rear strut/damper assemblies. The Toyota Electronic Parts Catalogue for Crown models of this era also lists “Bumper, Front Spring (No. 1)” and “Bumper, Rear Spring,” confirming their use on this vehicle.

On the 2018 Toyota Crown, bump-stops (also called jounce bumpers) are small but important pieces of microcellular polyurethane foam or rubber that sit on the damper rod under the dust boot. Their job is to gently ramp up the effective spring rate right at the end of suspension travel so the car doesn’t smash metal-on-metal over big hits, steep driveway entries, or when fully loaded. That progressive cushion protects the shock internals and top mounts, helps keep the tyres planted over bumps, and prevents nasty knocks that can upset the Crown’s refined ride.

As part of regular servicing, it’s smart to have the bump-stops checked whenever the struts or shocks are inspected—typically every 40,000–60,000 km, or sooner if the car does lots of rough-road or heavy-load work. Tell-tales they’re due include perishing, cracking, missing chunks, or oil-soak from a weeping damper. A collapsed or missing bump-stop can lead to harsh bottoming, damaged damper seals, and even alignment shifts over time.

Replacement is straightforward while the strut is out: they’re usually swapped along with the dust boots. Quality OE-style microcellular foam bump-stops are recommended to maintain the Crown’s quiet, plush character. If the car is lowered, matched shorter bump-stops (or carefully trimmed OE-style units per reputable kit instructions) are important to preserve suspension travel and avoid constant contact that makes the ride crashy. After any suspension work, a wheel alignment is a good idea.

DIYers should use proper spring compressors and follow torque-to-spec procedures on top mounts and lower fasteners. If there’s any doubt, a trusted workshop can bundle new bump-stops, boots, and mounts with fresh dampers to restore that smooth, composed Toyota feel. It’s a small part that pulls a lot of weight—literally—keeping the 2018 Crown comfortable and controlled on Aussie and Kiwi roads alike.

• Inspect at strut service intervals or when noises/harshness appear
• Replace if cracked, perished, oil-soaked, or missing
• Use OE-equivalent foam bump-stops, match to any ride-height changes
• Get an alignment after suspension work

Popular questions about 2018 Toyota Crown bump-stops

Do all 2018 Toyota Crowns have bump-stops?
Yes. Toyota’s suspension diagrams and parts listings for both late S210 and S220 (2018) Crowns include front and rear shock absorber bumpers. They sit under the dust boots on the damper rod and work on every drive to control end-of-travel.

How can an owner tell if the bump-stops need replacing?
Look for cracking, splits, missing material, or soggy foam from oil contamination. Clues from behind the wheel include a hard “thud” on big bumps, extra suspension noise, or a floating feel after hits. If the shocks are being replaced, it’s smart and cost-effective to renew the bump-stops and boots at the same time.

Is it safe to drive if a bump-stop is damaged or missing?
It’ll still drive, but it’s not a great idea. Without a healthy bump-stop the damper can bottom out, risking seal damage and bent mounts, and the ride gets harsh. In NZ, excessive suspension deterioration can also raise WOF issues. Sort it promptly to protect the rest of the suspension and keep the Crown riding nicely.