Parts for your 2013 Ford Mondeo-Radiator cap

2013 Ford Mondeo radiator cap — what’s actually fitted

Based on technical sources including the Ford Mondeo (2007–2014) Workshop Manual – Cooling System, Ford ETIS/TIS service diagrams, and the Haynes Ford Mondeo Petrol & Diesel (2007–2014) Manual (No. 4801), the 2013 Ford Mondeo does not use a traditional radiator cap on the radiator neck. Instead, it runs a closed, pressurised cooling system with a remote coolant expansion/degas bottle. The pressure cap lives on that bottle, and the radiator itself has no filler neck. So, a “radiator cap” as a standalone part on the radiator isn’t relevant to this model.

Ford’s design routes filling, bleeding, and pressure control through the expansion tank. That bottle-mounted pressure cap maintains the system pressure, allows safe venting if pressure climbs too high, and helps purge air via the degas circuit. It also keeps the hot radiator tucked away under the bonnet without a user-serviceable cap directly on it.

• Better air separation and consistent pressure control via the degas circuit
• Cleaner front-end packaging and lower radiator height
• Reduced risk of burns from opening a cap on a hot radiator

Servicing-wise, owners should think “coolant expansion tank cap” rather than “radiator cap”. At each service or about every 10,000–15,000 kilometres, check the cap’s seal for nicks or flattening, make sure the spring-loaded valve moves freely, and confirm the threads lock on snugly. If there’s a sweet coolant smell after shutdown, unexplained coolant loss, hoses that feel odd (collapsing when cooling or ballooning when hot), or the system pushes coolant into the overflow, the cap may not be holding the correct pressure and is worth replacing.

Only open the cap when the engine is stone cold. Use the coolant grade specified for the Mondeo and top up to the cold mark on the bottle. If the cap’s rating isn’t legible, or the cap looks tired or perished, replacing it is inexpensive insurance for the water pump, hoses, heater core, and radiator.

• Does a 2013 Ford Mondeo have a radiator cap on the radiator?

  No. It uses a sealed cooling system with a pressure cap on the coolant expansion (degas) bottle. The radiator has no filler neck or user-removable cap.

• Where is the coolant cap located on a 2013 Mondeo?

  Under the bonnet on the expansion/degas tank, usually on the passenger side of the bay. It’s the black plastic pressure cap you remove (only when cold) to check or top up coolant.

• How often should the Mondeo’s expansion tank cap be replaced?

  Inspect it at every service and replace at the first sign of seal damage, sticking valves, illegible rating, or if you’re chasing minor coolant loss or pressure issues. Many techs proactively replace it every few years as cheap preventative maintenance.