Parts for your 2014 Toyota Crown-Radiator cap

2014 Toyota Crown radiator cap

Yes, the 2014 Toyota Crown uses a radiator cap. Technical sources that identify it include the Toyota Electronic Parts Catalog (EPC) for S210-series Crown models (e.g., GRS210, AWS210, GWS214), which lists a “Cap, Radiator” commonly supplied as a 1.1 bar unit (examples include Toyota part numbers in the 16401‑31xxx range). Toyota’s Repair Manual (TIS) procedures for the S210 Crown hybrid and petrol variants also specify removing and reinstalling the “radiator cap sub‑assembly” during coolant replacement and pressure testing, and the Owner’s Manual cautions not to remove the radiator cap when hot. Together, these factory references confirm the part is fitted and serviceable on 2014 Crown models, whether the cap sits on the radiator itself or on a remote filler neck near the engine, depending on engine type.

On the 2014 Toyota Crown, the radiator cap quietly does a big job. It seals the cooling system, holds a set pressure so the coolant’s boiling point is raised, and lets expanding coolant flow to the overflow bottle. As the engine cools, the cap’s vacuum valve draws coolant back in, keeping things topped up and air-free. On some Crowns the cap is right on the radiator, on others it’s on a separate filler neck by the engine—either way, it’s the same clever pressure valve in a small package.

As part of routine servicing, it’s smart to inspect or test the cap. Only ever open it stone cold. Look for perished rubber, a stiff or stuck spring, or crusty pink/white deposits on the cap or filler neck. A workshop can pressure‑test the cap to confirm it holds the specified relief pressure for your exact variant (most Crowns of this era use around 1.1 bar). If in doubt, replace—caps are inexpensive insurance.

When replacing, match the pressure rating, neck depth and cap style to the Crown’s engine code and VIN. Using the wrong rating can cause early boiling, coolant loss, or stress the system. For hybrids, remember there are two coolant circuits: the engine loop (with the radiator cap) and the inverter/electric drive loop with its own reservoir—don’t mix them. Top up only with Toyota Super Long Life Coolant (pink) and follow the proper bleed procedure to avoid trapped air.

Typical signs a radiator cap needs attention on a 2014 Crown include:

• Coolant loss with no obvious leaks, or the overflow bottle not returning coolant after cool‑down
• Overheating under load, or hoses collapsing as the engine cools
• Visible damage to the cap seal or a corroded filler neck

A quick check at every service (or at least annually) and proactive replacement every few years keeps the Crown’s cooling system happy and the long‑life coolant doing its job.

Popular questions

What pressure radiator cap does a 2014 Toyota Crown use?
Most 2014 Crown petrol and hybrid variants run a 1.1 bar cap. That said, Toyota specifies by engine and market, so the sure way is to check the label on the existing cap, the under‑bonnet sticker, or the EPC listing against your VIN. Matching the exact pressure and neck style prevents nuisance overheating or undue system stress.

Where is the radiator cap on a 2014 Crown?
It varies by engine. On some models it’s on the radiator’s top tank, on others (common on the 2.5‑litre hybrid) it’s on a remote filler neck near the engine. If you see two caps, you’re likely looking at the engine radiator cap and the separate hybrid inverter reservoir cap—don’t mix them up.

Is it OK to drive with a dodgy radiator cap?
Not recommended. A weak or stuck cap can cause coolant loss, hose collapse during cool‑down, and overheating, which risks head gasket damage. If the cap fails a pressure test or shows damaged seals, replace it before more expensive problems show up.