Parts for your 2019 Toyota Prius-Gas struts

2019 Toyota Prius gas struts: what they do and when to replace them

Based on Toyota technical sources (Owner’s Manual guidance, Toyota service manual procedures for the Back Door Damper/Stay, and Toyota Electronic Parts Catalogue listings for the XW50 series), the 2019 Toyota Prius is factory-fitted with two gas struts on the back door (hatch). The bonnet on this model uses a prop rod rather than gas struts. So, gas struts are absolutely relevant to the rear hatch of a 2019 Prius, keeping it easy and safe to lift and hold open.

These nitrogen-charged dampers counterbalance the weight of the hatch, control opening speed, and hold the door steady in wind or on inclines. Over time the internal gas pressure and seals can fade, especially with temperature swings common across Australia and New Zealand, making the hatch heavy, slow to rise, or quick to drop.

• Common signs they’re due: the hatch won’t stay up, opens sluggishly (worse in cold weather), needs a push to start moving, or shows an oily film on the rod.
• Safety clue: if the hatch feels heavier than usual or “bounces” near full extension, the struts are tired.

As part of routine servicing, it’s smart to check hatch operation, listen for any creaks at the ball joints, and wipe the shiny piston rods with a clean, dry cloth. Don’t lubricate the rods—oils or silicone can damage the seals. Keep the hinge and latch lightly lubricated instead to reduce load on the struts.

When replacement time comes, always change them in pairs for balanced support. Support the hatch securely (a second person or a prop) before releasing the spring clips and popping the struts off the ball studs. Fit the new units in the same orientation (rod end down on most Prius applications) so the internal oil keeps the top seal wet. Refit clips fully and confirm smooth, controlled motion through the full travel. Follow Toyota service manual torque specs for any fasteners, and avoid twisting the body of the strut.

Choose struts that match the original load rating and end fittings shown in the Toyota parts catalogue for your VIN—some trims and markets differ with spoilers or glazing. With the right parts fitted, the back door should lift cleanly and hold steady, making day-to-day use safer and easier.

FAQs

Does the 2019 Toyota Prius have gas struts on the bonnet?

No. From factory, the 2019 Prius uses a prop rod for the bonnet. The only OEM gas struts on this model are on the back door (hatch). Aftermarket bonnet-strut kits exist, but they’re not Toyota genuine and should be installed carefully.

How long do Prius hatch gas struts typically last?

Many last 5–8 years, depending on climate and usage. Heat, cold, and frequent cycling can shorten life. If the hatch won’t hold up or feels heavy, it’s time to replace both struts together.

Can Prius gas struts be re-gassed, or should they be replaced?

Most automotive hatch struts are sealed units and aren’t serviced or re-gassed reliably. Replacement with correctly rated new struts is the recommended fix for consistent performance and safety.