Parts for your 2022 Honda Cr-v-Radiator cap

2022 Honda CR‑V radiator cap — is it used, what it does, and how to look after it

Based on technical references — including the 2022 Honda CR‑V Owner’s Manual (Cooling System section), Honda service information, and the Honda electronic parts catalogue — the 2022 Honda CR‑V sold in Australia and New Zealand (petrol models) is fitted with a conventional radiator cap on the radiator, with a separate translucent reserve tank. So yes, a radiator cap is relevant and used on this model.

The radiator cap on the 2022 CR‑V does more than just close the filler neck. It’s a pressure-regulating valve that keeps the cooling system sealed at a set pressure (typically around 1.1 bar for many Hondas — owners should always match the rating printed on the original cap). By raising the system pressure, the coolant’s boiling point goes up, which helps the CR‑V manage heat during hot Aussie summers and hilly Kiwi drives. The cap also has a vacuum valve to let coolant draw back from the reserve tank as the engine cools, preventing air pockets.

Servicing-wise, the cap deserves the same attention as the coolant itself. Honda’s long-life Type 2 blue coolant has extended intervals, and the cap should be inspected whenever coolant is serviced or if there are cooling-system niggles. Signs a cap may be past its best include:

• Coolant pushing into the reserve tank and not returning after cool-down
• Overheating, intermittent heater performance, or gurgling after shutdown
• Perished or cracked cap seals, corroded spring, or a cap that spins on too easily

Replacement is inexpensive insurance. Stick with genuine or high-quality OEM-spec caps that match the pressure rating and neck type. Under the bonnet, only remove the cap when the engine is completely cold. Press down and turn anti-clockwise slowly to release any residual pressure. If topping up at the radiator, fill to the base of the filler neck, then bring the reserve tank to the “MAX” mark with the correct premix. After any cooling-system work, run the engine to operating temp with the heater on, check for leaks, allow to cool fully, and recheck levels.

Routine checks are straightforward: glance at the reserve tank level weekly, and at service time have the cap’s seals and spring tension inspected. A healthy radiator cap keeps the CR‑V’s temperature stable, protects against boil-over, and helps the cooling system last the distance.

Popular questions about 2022 Honda CR‑V radiator caps

Where is the radiator cap on a 2022 Honda CR‑V?
It’s mounted on the top of the radiator, just ahead of the engine bay. The translucent reserve tank sits nearby and is used for quick level checks and top-ups. Only remove the radiator cap when the engine is stone cold.

What pressure rating cap does the 2022 CR‑V use?
Most petrol 2022 CR‑V models use a cap around 1.1 bar (approximately 16 psi). Owners should confirm the exact rating printed on the original cap or in Honda service documentation and match it when replacing.

When should the radiator cap be replaced?
There’s no fixed kilometre-based interval, but it’s smart to inspect or replace at coolant service time, or sooner if symptoms appear (coolant overflow, overheating, or damaged seals). Using a genuine or quality OEM-spec cap helps maintain proper pressure and reliability.