Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Hyundai Nexo LimitedFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | 4.55 OZS. | 0.13 L | POE | S | |||
| Air Cond Refrigerant | 1.30 LBS. | 0.58 KG | R-1234yf | S | |||
| Brake Fluid | N/A | N/A | SAE J1704 DOT 4LV, FMVSS116 DOT 4, ISO4925 CLASS-6 | As required. | S | ||
| Differential Gear Oil | 1.06 QTS. | 1 L | GL-4 SAE 75W-85, TGO-9 | S | |||
| Engine Coolant | Fuel Cell Stack | N/A | N/A | Contact the dealer for further references. | S | ||
| Engine Coolant | Traction Motor | N/A | N/A | Contact the dealer for further references. | S | ||
| Fuel Tank | 41.22 GALS. | 156.03 L | Hydrogen (SAE J2719 or ISO 14687-2) | S | |||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.