Hyundai Sonata: Cooling System / Thermostat Repair procedures
| Removal |
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. |
| 1. |
Drain engine coolant so that its level would be under the thermostat height. |
| 2. |
Remove the radiator lower hose.
(Refer to Cooling System - "Radiator Hose") |
| 3. |
Remove the water inlet fitting (A) and thermostat (B).
|
| Inspection |
| 1. |
Immerse the thermostat in water and gradually heat the water.
|
| 2. |
Check the valve opening temperature.
If the valve opening temperature is not as specified, replace the thermostat. |
| 3. |
Check the valve lift.
If the valve lift is not as specified, replace the thermostat. |
| Installation |
| 1. |
Place the thermostat in the block.
Install the thermostat (B) with the jiggle valve upward. |
| 2. |
Install the water inlet fitting (A).
|
| 3. |
Fill with engine coolant. |
| 4. |
Start engine and check for leaks. |
Thermostat Components and Components Location
Components
1. Water inlet fitting2. Thermostat
...
Thermostat Troubleshooting
Troubleshooting
SymptomsPossible CausesRemedyCoolant leakage
•
From the thermostat gasket
Check the mounting bolts
•
Check the torque of the mounting bolts
•
Retighten the bo ...
Other information:
Hyundai Sonata LF 2014-2019 Owners Manual: To decrease Cruise Control speed
Push the toggle switch (1) down (SET-) and hold it. Your vehicle will gradually
slow down. Release the toggle switch at the speed you want to maintain.
Push the toggle switch (1) down (SET-) and release it immediately. The cruising
speed will decrease 1.0 mph (1.6 km/h) each time the toggle ...
Hyundai Sonata LF 2014-2019 Service Manual: Schematic Diagrams
Circuit Diagram (1)
Circuit Diagram (2)
Circuit Diagram (3)
SRSCM Connector Terminal
PinFunction (Connector A)PinFunction (Connector B)A1IGN-1B1Side impact sensor front, Passenger-High (+)A2Front impact sensor driver-High (+)B2Side impact sensor front, Passenger-Low (-)A3Front impact sensor ...
