Hyundai Sonata: Front Suspension System / Front Strut Assembly Repair procedures
1. |
Raise the vehicle, and make sure it is securely supported. |
2. |
Remove the wheel cap (A). 
Be careful not to damage to the wheel cap (A) when removing the it. |
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3. |
Remove the front wheel and tire (A) from front hub.
Tightening torque :
88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
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Be careful not to damage to the hub bolts when removing the front wheel and tire (A). |
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4. |
Loosen the stabilizer link (A) and remove it from the shock absorber.
Tightening torque :
98.1 ~ 117.7 N.m (10.0 ~ 12.0 kgf.m, 72.3 ~ 86.8 lb-ft)
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5. |
Loosen the wheel speed sensor bracket bolt (A) and brake hose bracket (B). 
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6. |
Disconnect the front strut assembly (A) with the knuckle by loosening the bolt & nut.
Tightening torque :
196.1 ~ 215.7 N.m (20.0 ~ 22.0 kgf.m, 144.7 ~ 159.1 lb-ft)
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7. |
Remove the front strut assembly and than loosen the strut mounting nuts (A).
Tightening torque :
53.9 ~ 73.5 N.m (5.5 ~ 7.5 kgf.m, 32.5 ~ 39.8 ~ 54.2 lb-ft)
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8. |
Installation is the reverse of removal. |
1. |
Compress the coil spring (A) with a SST (09546-26000).
Do not compress the spring more than necessary. 
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2. |
Loosen the self locking nuts (C) from the strut (B). |
3. |
Remove the insulator, spring seat, coil spring and dust cover from the strut assembly. |
4. |
Reassembly is the reverse of the disassembly. |
1. |
Check the strut bearing for wear and damage. |
2. |
Check the spring upper and lower seat for damage and deterioration. |
3. |
Compress and extend the piston rod (A) and check that there is no abnormal resistance or unusual sound during operation. 
Disposal
(1) |
Fully extend the piston rod. |
(2) |
Drill a hole on the (A) section to remove gas from the cylinder. 
• |
The gas coming out is harmless but be careful of chips that may tly when driling. |
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Components
1. Strut assembly2. Insulator3. Strut bearing4. Spring upper pad5. Coil spring6. Dust cover7. Bumper rubber8. Spring lower pad
...
Replacement
1.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the wheel cap (A).
Be careful not to damage to the wheel cap (A) when removing the it ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
Troubleshooting
SymptomSuspect areaEngine will not start or stuggle to startVapor hose damaged or disconnectedEngine stuggle to startMalfunction of the Purge Control Solenoid ValveRough idle or engine stallsVapor hose damaged or disconnectedMalfunction of the PCV valveRough idleMalfunction of t ...
Hyundai Sonata LF 2014-2019 Owners Manual: Features of Your Vehicle
Satellite radio reception
You may experience difficulties in receiving XM™ satellite radio signals in the
following situations.
If you are driving in a tunnel or a covered parking area.
If you are driving beneath the top level of a multi-level freeway.
If you are driving under a bridge.
If ...