Parts for your 2023 Mitsubishi Asx-Gas struts

2023 Mitsubishi ASX gas struts: what’s fitted and how to look after them

Based on the Mitsubishi Motors Australia 2023 ASX Owner’s Manual (body and safety cautions for the back door) and the Mitsubishi Motors Electronic Parts Catalogue (EPC) listing a “Stay, Back Door” gas-filled type for 2023 ASX models, this vehicle is fitted with gas struts on the tailgate/hatch. The bonnet is supported by a prop rod from factory, not gas struts. Workshop documentation for the ASX/RVR platform also details removal/installation of the back door stay as a gas-pressurised component.

The ASX’s tailgate uses a pair of gas struts to make opening smooth and keep the hatch held safely overhead. They’re small, sealed, gas-pressurised cylinders that deliver steady lifting assistance and resist sudden drops. Day to day, that means less effort to open the tailgate and a lot more confidence it won’t clonk someone on the scone while loading the pram or the esky.

Like any wear item, gas struts lose pressure over time, especially with lots of use, heat, cold, or dust. When they’re on the way out, the tailgate can feel heavy, rise slowly (or not at all), or sag back down. A light mist of oil near a shaft seal, a bent rod, or cracked end fittings are also red flags.

For servicing, it’s smart to check the gas struts annually alongside routine maintenance. A quick functional test is easy: open the tailgate, pause halfway, and see if it holds position smoothly without shuddering or sinking. If there’s any doubt, replace them in pairs to keep lift and balance even.

Handy tips that help them last:

• Keep the chrome shafts clean, wipe with a soft, damp cloth. Avoid abrasive cleaners.
• Don’t grease or oil the shafts—lubricants attract grit and can chew out the seals.
• Support the tailgate with a prop or helper when changing struts, those little clips can ping off.
• Cold mornings can make tired struts feel worse—if they struggle in winter, they’re due.

Replacement is straightforward with basic tools: carefully flick the retaining clips, pop the old strut off the ball studs, and press the new unit on until it clicks. Avoid twisting the body with pliers and don’t attempt to re-gas sealed units, fit quality replacements matched to the ASX’s spec. With fresh struts installed, the hatch should lift confidently and stay put without needing a shoulder nudge.

Note for owners browsing bonnet upgrades: the 2023 ASX doesn’t come with bonnet gas struts from factory in local spec, but aftermarket kits exist. If fitting one, ensure the kit is load-rated for the ASX bonnet and uses proper mounting brackets to avoid panel or hinge stress.

FAQs

Does the 2023 Mitsubishi ASX have bonnet gas struts?
Factory vehicles in Australia and New Zealand use a prop rod for the bonnet, not gas struts. The tailgate, however, is supported by gas struts. Aftermarket bonnet strut kits are available if a hands-free lift is desired.

How long do ASX tailgate gas struts typically last?
Service life varies with climate and use, but many owners see 4–8 years. Lots of hot sun, dusty conditions, or frequent loading cycles can shorten that. If the tailgate won’t hold itself up or rises sluggishly, it’s time to replace.

Can worn gas struts be re-gassed, or should they be replaced?
The OE-style units on the ASX are sealed gas-pressurised struts and aren’t designed for re-gassing. Replacement with new, correctly rated units is the safe, reliable option and is usually quick and affordable.