Parts for your 2017 Ford Escape-Radiator cap

2017 Ford Escape radiator cap — what’s actually fitted under the bonnet

There isn’t a traditional radiator cap on a 2017 Ford Escape. Ford’s own technical information backs this up: the Ford Workshop Manual (WSM) for the 2017 Escape/Kuga (Section 303-03, Engine Cooling) describes a sealed radiator with a pressurised “degas bottle” (coolant expansion reservoir) that carries the only pressure cap in the system. The Owner’s Manual for the same model also tells owners to add coolant only via the coolant reservoir and to never remove the coolant pressure cap when hot, confirming there’s no separate cap on the radiator neck.

Why no radiator cap? The Escape’s cooling system is a modern, closed design. By moving pressure control to the expansion tank, Ford improves air separation (deaeration), maintains consistent system pressure, and provides a single, higher access point for filling and bleeding. This layout helps packaging in the engine bay, reduces the chance of trapped air, and keeps the actual radiator sealed lower down, which is ideal for crash protection and serviceability. It’s the pressurised reservoir cap that does the traditional “radiator-cap” job of setting system pressure and allowing coolant to move between the tank and the rest of the system as it heats and cools.

What should Escape owners service instead? The coolant reservoir pressure cap. If its spring or seal gets tired, it can’t hold the right pressure, and that can lead to overheating, coolant loss, or collapsed hoses. Look for these signs under the bonnet:

• Sweet coolant smell, dried crust around the reservoir neck, or damp staining near the cap
• Overheating warnings, or the level in the tank rising and falling more than usual
• Hoses going oddly hard when hot, or sucking flat when cooling down

Good practice for Aussie and Kiwi owners is simple: inspect the reservoir cap at every service, replace it if the seal’s cracked or swollen, and use a quality cap that matches the factory pressure rating. Only open the cap when the engine is fully cool, and always refill with the correct coolant mix to the “COLD FILL” mark. If chasing temp fluctuations, a cap pressure test is a quick way to confirm the cap is doing its job before throwing parts at the problem.

So, while people might search for a “2017 Ford Escape radiator cap”, the part they actually need is the coolant reservoir (degas bottle) pressure cap — small, inexpensive, and critical to keeping the Escape happy on long Kiwi and Aussie drives.

Popular questions

Does a 2017 Ford Escape have a radiator cap?
It doesn’t have a cap on the radiator itself. The cooling system uses a sealed radiator and a pressurised coolant reservoir (degas bottle). The pressure cap is on that reservoir and handles pressure relief and vacuum return.

Where does coolant get topped up on a 2017 Escape?
Coolant is added only through the coolant reservoir. The Owner’s Manual specifies using the reservoir as the sole fill point and warns against opening the pressure cap when hot.

When should the coolant reservoir cap be replaced?
Have it inspected at each service and replace it if the seal is damaged, the cap won’t hold rated pressure, or there are leaks or overheating symptoms. Many workshops proactively replace the cap around major cooling system services for peace of mind.