2021 Hyundai NEXO Coolant in Peoria, AZ

Warning lights, rising temperature indications, a sweet odor, visible leaks, or a coolant level that drops between checks mean your NEXO needs service.

Because the 2021 Hyundai NEXO relies on cooled loops for its fuel cell stack and drive components, changes in temperature behavior or level trends are important. Check only when the vehicle is cold; the system is hot and under pressure after running. A slow loss of coolant points to a leak that requires inspection.

• Temperature or system warnings on the dash
• Coolant residue or dampness near lines or heat exchangers
• Coolant level trending down between cold checks

It includes testing coolant condition, draining and refilling with manufacturer-specified coolant, pressure testing, and inspecting pumps, hoses, lines, and heat exchangers.

Technicians also check caps and fittings for proper sealing, verify fan operation, and ensure airflow to the front heat exchangers. Findings are reviewed with you before any additional work. This service restores corrosion protection and maintains stable operating temperatures for the NEXO’s fuel cell and power electronics.

• Coolant condition test and system integrity check
• Drain/refill with the specified coolant for this vehicle
• Pressure test and component/airflow inspection

The manufacturer publishes the maintenance schedule for this vehicle, and that schedule determines when to change the coolant.

Between scheduled services, technicians can test coolant condition during a visit to confirm its protective properties remain in range. Driving in Arizona heat or heavy stop-and-go may justify checking condition sooner. Follow the factory guidance and supplement it with periodic tests for peace of mind.

• Use the official maintenance schedule for timing
• Request a coolant condition test at service visits
• Adjust checks based on operating conditions

Hyundai specifies the correct coolant for the 2021 Hyundai NEXO, and coolants are not interchangeable.

Color is not a reliable guide to what’s in the bottle; always use the exact product that meets the manufacturer’s specification for this vehicle. Using the wrong coolant can reduce corrosion protection and affect component life. Our team installs the proper coolant for the NEXO’s systems.

• Follow Hyundai’s specification for this model
• Do not mix types based on color
• Ask us to verify compatibility before adding

Topping off restores level but does not refresh depleted additives, and a level that keeps dropping signals a leak that needs inspection.

Only check levels when the vehicle is cold; the system is hot and pressurized after running. If you need to add coolant, have the system tested soon to confirm concentration, pH, and sealing. Proper service maintains corrosion protection and thermal performance.

• Check and add only when the system is cold
• Book an inspection for any ongoing level loss
• Plan a full service to restore additive protection

Use our online tool to schedule service or call {{rooftop.phone}} to arrange a visit in Peoria.

You can pick a time, share concerns, and review transportation options during booking. Before you arrive, check our current service specials. Our team will test, service, and verify your 2021 Hyundai NEXO’s cooling system to factory standards.

• Book online via our scheduler
• Call for assistance or questions
• Review specials before your appointment