Parts for your 2007 Toyota Blade-Radiator cap

2007 Toyota Blade radiator cap: fitment, purpose, and service tips

Technical references: Toyota’s Electronic Parts Catalog for the 2007 Toyota Blade (E15# series: AZE154H 2AZ‑FE and G(G/R)E15# 2GR‑FE) lists a “Cap Sub‑Assy, Radiator” for this model, and the Toyota Repair Manual for the Auris/Blade platform (Cooling System – CO section) specifies inspection and pressure‑testing of the radiator cap. These factory sources confirm a conventional pressurised radiator cap is fitted to the 2007 Toyota Blade.

The radiator cap on a 2007 Toyota Blade does more than just close the filler neck. It regulates system pressure (typically around 108 kPa / 1.1 bar), which raises the coolant’s boiling point so the engine can run at the right temperature without boiling over. Inside the cap are pressure and vacuum valves: under heat it vents excess pressure to the overflow bottle, as the engine cools, it draws coolant back, keeping the system full and air‑free. A healthy cap protects hoses, keeps the thermostat and water pump happy, and helps avoid hot‑day dramas on the motorway.

As part of servicing the 2007 Toyota Blade radiator cap, it’s smart to treat the cap like a small but critical component. Workshop practice (as outlined in Toyota’s CO section) is to inspect at every service and pressure‑test when overheating, coolant loss, or crusty deposits are noted. Replace if the rubber seals are perished, the spring feels weak, the seal face is pitted, or it cannot hold its rated pressure on a tester.

• Use the correct spec cap: Toyota‑type 1.1 bar (about 108 kPa). Mixing pressures can cause chronic overflow or hose collapse.
• Safety first: only open the cap stone‑cold. Wrap a thick rag around it and crack it slowly.
• Look for tell‑tales: repeated coolant loss, overflow bottle that stays brimmed or goes bone‑dry, collapsed upper hose after cooldown, or rusty/pink crust at the neck.
• When replacing: fit the new cap cleanly, top up with Toyota Super Long Life Coolant (pink, premixed), bleed air as required, then recheck the level after a proper heat cycle.

For most Blades, the cap sits on the radiator’s top tank under the bonnet, with the overflow bottle nearby. Keeping this little part in top nick is cheap insurance against overheating and head‑gasket grief.

Popular questions about 2007 Toyota Blade radiator caps

What pressure rating does the 2007 Toyota Blade radiator cap use?

Most 2007 Blade variants (2AZ‑FE and 2GR‑FE) use a 1.1 bar (about 108 kPa) cap as specified in Toyota service information for the E15# platform. Sticking with the correct rating ensures proper boil‑over protection and prevents hose collapse or chronic overflow issues.

How often should the radiator cap be replaced?

There’s no fixed time/kilometre interval from Toyota, but best practice is to inspect at each service and pressure‑test if there are cooling symptoms. Many workshops proactively replace the cap around 5 years or 100,000 km, or sooner if seals harden, corrosion appears, or the cap fails a pressure test.

Where is the cap located, and is the reservoir pressurised?

On the 2007 Blade, the pressure cap is mounted on the radiator’s top tank. The adjacent reservoir acts as an overflow/return bottle and is not normally pressurised, the cap manages system pressure and returns coolant to and from that bottle as the engine heats and cools.