Parts for your 2006 Toyota Highlander-Gas struts

2006 Toyota Highlander (Kluger) Gas Struts — What They Do and When to Replace

Based on Toyota’s technical literature and parts catalogues, gas struts are indeed fitted to the 2006 Toyota Highlander (sold as Kluger in Australia and New Zealand). The Toyota Electronic Parts Catalogue lists “Stay Assembly, Back Door” for the rear liftgate and an additional stay for the separate opening back glass on certain trims, confirming gas‑charged support struts on the tailgate assembly. The bonnet, however, uses a conventional support rod (not gas struts), as specified in Toyota’s body/bonnet sections of the workshop manuals for this generation.

On the 2006 Highlander/Kluger, the gas struts take the grunt out of lifting the rear hatch and hold it safely in place while loading up. They’re nitrogen‑charged dampers that control the lift and drop of the tailgate and, where fitted, the flip‑up rear glass. That means easier access, smoother operation, and fewer surprises if there’s a gust of wind while the door’s open.

There’s no fixed replacement interval, but most gas struts gradually lose charge over time. Climate, dust, and coastal air can speed that up. A good rule of thumb is to check them at each service or at least every 10,000 km. If the hatch feels heavy, won’t stay up, rises slowly (especially on cold mornings), or judders on the way down, they’re due.

Replacing them is straightforward and usually done in pairs so lift and damping stay balanced. The tailgate must be safely supported—use a prop or a mate to hold it. The ball‑socket fittings typically use a retaining clip, once released, the old strut pops off and the new one clicks on. No need to lubricate the shiny shaft—oil or grease can damage the seals. Just keep the rods clean and avoid leaning cargo on the struts when loading.

Owners with dealer‑fitted accessories like a large rear spoiler or added tailgate trim might prefer heavy‑duty spec struts. If the vehicle has a power‑assist tailgate conversion, always choose struts matched to that system to avoid overloading the motor.

• Tell‑tale signs they’re tired: hatch drops or won’t hold, slow lift in cold weather, hissing/leaks, or needing two hands to open.
• Service tip: inspect the rod for nicks and the end fittings for play each time you’re in for a routine service.

Popular questions about 2006 Toyota Highlander gas struts

Which gas struts fit a 2006 Highlander/Kluger?
Toyota’s EPC lists “Stay Assembly, Back Door” for this model, with left and right units on the main tailgate and, on some trims, a smaller stay for the separate back glass. The exact part depends on build spec and market. Using the VIN ensures the correct strut length, force, and end fittings. Many quality aftermarket options match OEM specs if you prefer a cost‑effective swap.

How long do the tailgate struts last?
Typically 5–10 years, but climate and usage make a difference. In cooler months you may notice they struggle first thing in the morning. If the door won’t hold itself up or rises sluggishly, that’s your cue. Test by opening the tailgate fully and letting go cautiously, if it sags, replace both.

Can the bonnet be converted to gas struts?
From factory it uses a prop rod, not gas struts. Aftermarket bonnet strut kits exist, but they must be designed for this generation Highlander/Kluger to avoid fouling the bonnet or guards. Fitment is usually bolt‑on, but check clearances and use corrosion‑resistant hardware.