Parts for your 2013 Toyota Wish-Gas struts

2013 Toyota Wish gas struts — what they do and when to replace them

Based on technical references — Toyota Electronic Parts Catalogue (EPC) for ZGE20/ZGE25 series and the Toyota Repair Manual sections for “Back Door: Back Door Stay (gas‑charged)” — the 2013 Toyota Wish is factory‑fitted with gas struts on the rear tailgate. Aftermarket catalogues (e.g., Stabilus/Monroe lift support listings) also specify matched gas springs for the Wish’s rear hatch. The bonnet uses a prop rod, not gas struts, which is typical for Toyota models of this era.

On the Wish, the rear gas struts (often listed as “Back Door Stay Sub‑Assy”) counterbalance the tailgate, making it light to lift and stable overhead. They’re sealed, nitrogen‑charged and oil‑damped units, so they open smoothly and resist slamming, even in a breeze. Because they work as a matched pair, equal force left and right keeps the hatch square on its hinges and latch.

While gas struts don’t have a strict service interval, they do wear. Age, heat, cold snaps and dust on the chrome rods can slowly bleed off pressure or damage seals. Many vehicles see replacement around the 6–10 year mark. For the 2013 Wish, a quick check during regular servicing is smart.

• Common signs they’re on the way out:
  • Tailgate sags, won’t stay up, or drops in cold weather
  • Slow or jerky opening, hissing, or oil film on the rod
  • One side doing more work, twisting the hatch slightly

Best practice is to replace both struts together with units that match the OE length, end fittings and force rating (as per EPC/repair manual data or a reputable catalogue). The job is usually a 15–30 minute affair: secure the tailgate safely, flick up the retaining clips, swap the struts, and confirm smooth operation. Orientation matters — rod end down helps keep the internal seal lubricated. Gas struts are non‑serviceable