Hyundai Sonata LF: General Information / Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Suspension System / General Information / Troubleshooting

Troubleshooting
Symptom
Possible cause
Remedy
Hard steering
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Low tire pressure
No power assist
Correct
Replace
Adjust
Repair or replace
Poor return of steering wheel to center
Improper front wheel alignment
Correct
Poor or rough ride
Improper front wheel alignment
Malfunctioning shock absorber
Broken or worn stabilizer
Broken or worn coil spring
Worn lower arm bushing
Correct
Repair or replace
Replace
Replace
Replace the lower arm assembly
Abnormal tire wear
Improper front wheel alignment
Improper tire pressure
Malfunctioning shock absorber
Correct
Adjust
Repair or replace
Wandering
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Loose or worn lower arm bushing
Correct
Replace
Retighten or replace
Vehicle pulls to one side
Improper front wheel alignment
Excessive turning resistance of lower arm ball joint
Broken or worn coil spring
Bent lower arm
Correct
Replace
Replace
Repair or replace
Steering wheel shimmy
Improper front wheel alignment
Poor turning resistance of lower arm ball joint
Broken or worn stabilizer
Worn lower arm bushing
Malfunctioning shock absorber
Broken or worn coil spring
Correct
Replace
Replace
Replace
Repair or replace
Replace
Bottoming
Broken or worn coil spring
Malfunctioning shock absorber
Replace
Repair or replace

Wheel /tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or decelerating. Also, out-of-balance wheel and tires can vibrate at more than one speed. A vibration that is affected by the engine rpm, or is eliminated by placing the transmission in Neutral is not related to the tire and wheel. As a general rule, tire and wheel vibrations felt in the steering wheel are related to the front tire and wheel assemblies. Vibrations felt in the seat or floor are related to the rear tire and wheel assemblies. This can initially isolate a concern to the front or rear.
Careful attention must be paid to the tire and wheels. There are several symptoms that can be caused by damaged or worn tire and wheels. Perform a careful visual inspection of the tires and wheel assemblies. Spin the tires slowly and watch for signs of lateral or radial runout. Refer to the tire wear chart to determine the tire wear conditions and actions
Wheel and tire diagnosis
Rapid wear at the center
Rapid wear at both shoulders
Wear at one shoulder

•
Center-tread down to fabric due to excessive over inflated tires
•
Lack of rotation
•
Excessive toe on drive wheels
•
Heavy acceleration on drive
•
Under-inflated tires
•
Worn suspension components
•
Excessive cornering speeds
•
Lack of rotation
•
Toe adjustment out of specification
•
Camber out of specification
•
Damaged strut
•
Damaged lower arm
Partial wear
Feathered edge
Wear pattern

•
Caused by irregular burrs on brake drums
•
Toe adjustment out of specification
•
Damaged or worn tie rods
•
Damaged knuckle
•
Excessive toe on non-drive wheels
•
Lack of rotation

    Special Service Tools

    S..

    Front Suspension System

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    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Specifications


    Specifications Front Suspension ItemSpecificationSuspension typeMac Pherson StrutShock absorberTypeGasHPD (High Performance Damper) Rear Suspension ItemSpecificationSuspension typeMulti linkShock absorberTypeGasHPD (High Performance Damper) Wheel & Tire ItemSpecificationWheelalumium6...

    Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting


    Troubleshooting SymptomSuspect AreaRemedy (Refer to page)Water leaks from panorama sunroofDirt accumulated in drain tubeClear dirt inside of drainClogged drain tubeBlow air into drain to remove dirtBroken or dislocated drain tube, defective or cracked clipCheck tube installation and flange contactDeteriorated roof lid weatherstripReplaceExcessive roof lid-to-body clearance and improperly fitted weatherstripAdjustWind noise around panorama sunroofLoosen or deformed deflector, gaps in body workRetighten adjust or replaceMisaligned weather stripReadjust or replace weather stripSunroof lid makes a noise when moveForeign particles lodged in guide railCheck drive cable and guide rails for foreign particlesLoosen guide rails and lidRetightenMotor runs but panorama sunroof does not move or moves only partiallyForeign particles lodged in guide railAdjust or replaceIncorrect engagement of motor pinion with drive cableDecrease in motor`s clutch slipping forceIncreased sunroof sliding resistance or interference of sunroof with drive cables, weatherstrip, etc...

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