Parts for your 2013 Volvo Xc60-Radiator cap

2013 Volvo XC60 radiator cap — what’s actually fitted

For the 2013 Volvo XC60, a traditional radiator cap on the radiator itself isn’t used. Instead, the cooling system is a sealed, pressurised design with a cap on the coolant expansion tank (also called the reservoir or degas bottle). That cap performs the pressure-control and safety roles people typically associate with a “radiator cap”.

Technical sources back this up: the Volvo XC60 Owner’s Manual for 2013 directs coolant checks and top-ups at the pressurised expansion tank under the bonnet, not the radiator. Volvo’s VIDA service information for the P3 platform describes a closed cooling system with the high fill point and pressure cap on the expansion tank, and service procedures (pressure testing, filling, bleeding) are all carried out at the tank. OEM and aftermarket parts catalogues for 2013 XC60 list a coolant expansion tank cap rather than a radiator-mounted cap.

Why Volvo doesn’t use a radiator cap on this model comes down to design and safety. Putting the pressure cap on the expansion tank raises the fill point above the engine, which helps purge air and maintain a stable coolant level. It also keeps owners away from hot radiator cores, the expansion tank location and cap warnings reduce the risk of scalding. With modern alloy cross-flow radiators and tight packaging, a capless radiator also simplifies hoses and reduces leak points.

Servicing-wise, owners and technicians should treat the expansion tank cap as a critical piece of kit. Only remove it when the engine is stone cold. Look for tell-tales like dried coolant crust around the cap, a sweet coolant smell after driving, unexplained level drops, hoses that collapse after cool-down, or rising temps under load — all can point to a weak cap not holding pressure. The cap’s pressure rating (often around 1.4–1.5 bar/140–150 kPa, check the markings on your cap) is important for boiling-point control and system performance, so always fit a cap with the correct rating and quality seal. During routine services, a quick visual check and a pressure test at the expansion tank is a smart move, and replacing a tired cap is cheap protection for the water pump, heater core, and head gasket. Use the correct Volvo-compatible coolant mix (50/50 premix or as specified) and top up via the expansion tank only.

• Never open the cap when hot, wrap a rag around it and crack it slowly when cold.
• Inspect the cap seal for nicks, hardening, or swelling, replace if suspect.
• If overheating or coolant loss persists, test system pressure at the tank before chasing bigger faults.

• Technical references:
  • Volvo XC60 (2013) Owner’s Manual – Cooling system guidance (expansion tank use)
  • Volvo VIDA/Service Information – Cooling system design and function, P3 platform
  • OEM/Aftermarket parts catalogues – Pressure cap listed for coolant expansion tank, no radiator cap

FAQs

Where is the radiator cap on a 2013 Volvo XC60?
There isn’t one on the radiator. The pressure cap lives on the coolant expansion tank, typically on the upper side of the engine bay. That’s the only cap you open for checks, top-ups, pressure testing, or bleeding.

What pressure rating should the XC60’s coolant cap have?
Most 2013 XC60 caps are marked around 1.4–1.5 bar (140–150 kPa). Always match the rating printed on your existing cap or per Volvo specifications. Using the wrong pressure can cause early boiling or stress the system.

How often should the expansion tank cap be replaced?
There’s no fixed interval. Have it inspected at each service and replace at the first sign of a weak seal, crusty deposits, sticking valve, or pressure-test failure. It’s an inexpensive part that prevents bigger cooling dramas.