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.

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HOMESERVICE MANUALSKIA2017RIO EX, 4D HATCHBACKREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE MECHANICALCOOLING FANENGINE COOLING SYSTEMRADIATORDESCRIPTION AND OPERATIONDESCRIPTION[COOLING FAN OPERATION CONDITIONS]

2017 Kia Rio EX, 4D Hatchback

[Cooling Fan Operation Conditions]

2017 Kia Rio EX, 4D HatchbackSECTION [Cooling Fan Operation Conditions]

A/C Switch	A/C Pressure [kgf/cm² G (psi G)	Vehicle Speed [km/h (mph)]	Coolant Temperature [°C (°F)]	Cooling Fan Speed
OFF	-	V < 45 (28)	95 ~ 100 (203 ~ 212)	LOW
		V < 45 (28)	100 (212) or above	HIGH
		45 (28) ≤ V < 80 (49.7)	95 ~ 100 (203 ~ 212)	LOW
		45 (28) ≤ V < 80 (49.7)	100 (212) or above	HIGH
		80 (49.7) ≤ V	105 (221) or above	HIGH
ON	P < 6 (85.3)	All	105 (221) or above	HIGH
	6 (85.3) ≤ P < 12 (170.7)	V < 45 (28)	45 ~ 100 (113 ~ 212)	LOW
		V < 45 (28)	100 (212) or above	HIGH
		45 (28) ≤ V < 80 (49.7)	95 ~ 100 (203 ~ 212)	LOW
		45 (28) ≤ V < 80 (49.7)	100 (212) or above	HIGH
		80 (49.7) ≤ V	105 (221) or above	HIGH
	12 (170.7) ≤ P < 15.5 (120.5)	V < 45 (28)	-30 ~ 95 (-22 ~ 203)	LOW
		V < 45 (28)	95 (203) or above	HIGH
		45 (28) ≤ V < 80 (49.7)	95 ~ 100 (203 ~ 212)	LOW
		45 (28) ≤ V < 80 (49.7)	100 (212) or above	HIGH
		80 (49.7) ≤ V	105 (221) or above	HIGH
	15.5 (120.5) ≤ P	All	-30 (-22) or above	HIGH

Vehicle Speed [km/h (mph)]	Coolant Temperature [°C (°F)]	Cooling Fan Operation
V < 45 (28)	95 ~ 100 (203 ~ 212) or above	On
45 (28) ≤ V < 80 (49.7)	95 ~ 100 (203 ~ 212) or above	On
80 (49.7) ≤ V	105 (221) or above	On

RENDER: 1.0x

NO RELATED

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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.