Parts for your 2005 Toyota Caldina-Bump stops

2005 Toyota Caldina bump-stops: what they do and when to replace them

Technical sources confirm the 2005 Toyota Caldina is fitted with bump-stops. Toyota’s Electronic Parts Catalogue for the T24 series (including AZT241/246, ZZT241 and ST246) lists “bumper, front spring” and rear suspension bumpers, and the Toyota Repair Manual suspension sections illustrate jounce bumpers integrated with the front strut and rear shock assemblies. That means bump-stops are very much relevant on this model.

On a 2005 Caldina, bump-stops act as the final travel buffer for the suspension. They’re the dense foam or rubber pieces that the strut or shock meets under heavy compression—think potholes, speed humps taken too briskly, full loads, or rough rural roads. Their job is to prevent metal-to-metal contact, protect the damper internals, keep alignment more stable at full jounce, and soften the blow so the cabin doesn’t cop a nasty thud.

Because the Caldina runs MacPherson struts up front, the jounce bumper typically sits on the strut rod under the dust boot. At the rear, the bumper pairs with the shock/beam or multi-link arrangement (ST246 GT-Four variants). Over time—especially past the ten-year mark—these foam bumpers can perish, crack, or collapse, particularly if soaked by leaking shock oil. When that happens, bottoming becomes harsh, shocks cop extra punishment, and tyres and bushings can take a hiding.

Best practice on a Caldina is to inspect bump-stops whenever the struts or shocks are out, or any time a dust boot is replaced. Many techs treat bump-stops and boots as a consumable set. Replacement is straightforward while the damper is off the car and usually adds little cost compared with pulling the assembly again later.

• Signs they’re due: a sharp “bang” on big bumps, visible splitting or missing chunks, perished or sticky foam, torn boots, or evidence of bottoming on the strut/shock.
• Service tip: always support the vehicle safely, mark strut positions, and torque fasteners to spec. If struts are removed, a wheel alignment is recommended.
• Parts choice: OEM-style microcellular foam keeps ride comfort close to factory. Firmer polyurethane can sharpen response but may feel harsher on choppy roads.

Stay on top of bump-stops during routine suspension work and the Caldina will stay composed, quieter over hits, and kinder to tyres and dampers—ideal for Aussie and Kiwi roads.

Where are the bump-stops on a 2005 Toyota Caldina?
They sit on the front strut rods beneath the dust boots, and at the rear on the shock assemblies. On GT-Four (ST246) variants, they’re integrated with the rear multi-link shock units.

Do worn bump-stops affect a WOF or roadworthy?
If they’re missing, badly deteriorated, or causing the suspension to bottom out, they can contribute to a fail. Even if not the sole reason, they’re a safety item and should be replaced to protect the shocks and maintain control.

Should polyurethane or OEM foam bump-stops be used?
OEM-style foam preserves comfort and progressive feel. Polyurethane is tougher and can sharpen handling a touch, but it may transmit more harshness over sharp edges—choose based on ride preference and road conditions.