Parts for your 2015 Ford Everest-Radiator cap

2015 Ford Everest radiator-cap: is there one and what’s the go?

Short answer: a traditional radiator cap on the radiator itself isn’t used on the 2015 Ford Everest. Ford’s own service information for the Everest (UA, launched 2015) shows a sealed, pressurised cooling system that uses a remote expansion/degas bottle with a pressure cap, not a cap directly on the radiator. This layout is described in Ford workshop literature (Engine Cooling, Section 303-03) and aligns with the Owner’s Manual guidance to check and fill coolant only at the reservoir cap. The radiator core on these vehicles has no user‑serviceable cap.

Why ditch the old-school radiator cap? Modern Ford cooling systems, including the Everest’s, put the pressure cap on a high‑mounted expansion tank. That tank becomes the system’s highest point, which makes bleeding air easier and keeps the radiator itself simpler and more robust. It also reduces the chance of people cracking hot plastic radiator tanks by opening a cap on the core and helps packaging under the bonnet.

• Better de‑aeration: the remote degas bottle continuously separates air from coolant.
• Higher fill point: the cap sits at the top of the system for more reliable fills and level checks.
• Fewer leak points: no radiator neck or cap on the core, which is often plastic.
• Safety: owners are directed to a single, clearly labelled cap, and only to open it when the engine’s cold.

So while a “radiator cap” isn’t fitted to the radiator, the Everest absolutely relies on the pressure cap on its expansion tank to hold system pressure and control boil‑over. Owners should check coolant level at the translucent reservoir when the engine is cold, and inspect the reservoir cap’s seal for nicks or hardening. If there’s dried coolant around the cap, repeated overflow, or collapsing/ballooning hoses, the cap could be past its best. Replace the cap with the correct pressure rating specified by Ford and stick with the coolant type called out in the Owner’s Manual.

FAQs

Does the 2015 Ford Everest have a radiator cap?
No. The radiator itself doesn’t have a cap. The cooling system uses a pressurised expansion (degas) bottle with a pressure cap that does the same job of sealing and regulating pressure.

Where’s the coolant cap on a 2015 Everest and how should it be opened?
It’s on the translucent plastic expansion tank in the engine bay. Only open it when the engine is completely cold. Turn it slowly to the first stop to vent any residual pressure, then remove. Wear gloves and eye protection if unsure.

How can someone tell the expansion tank cap needs replacing?
Look for crusty coolant residue around the cap, repeated overflow after normal driving, coolant smells, or unstable coolant levels. If the rubber seal is cracked or the spring feels weak, fit a new cap with the correct Ford‑specified pressure rating.