Hyundai Sonata LF: General Information / Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Body (Interior and Exterior) / General Information / Troubleshooting

Troubleshooting
Symptom
Suspect Area
Remedy (Refer to page)
Water leaks from panorama sunroof
Dirt accumulated in drain tube
Clear dirt inside of drain
Clogged drain tube
Blow air into drain to remove dirt
Broken or dislocated drain tube, defective or cracked clip
Check tube installation and flange contact
Deteriorated roof lid weatherstrip
Replace
Excessive roof lid-to-body clearance and improperly fitted weatherstrip
Adjust
Wind noise around panorama sunroof
Loosen or deformed deflector, gaps in body work
Retighten adjust or replace
Misaligned weather strip
Readjust or replace weather strip
Sunroof lid makes a noise when move
Foreign particles lodged in guide rail
Check drive cable and guide rails for foreign particles
Loosen guide rails and lid
Retighten
Motor runs but panorama sunroof does not move or moves only partially
Foreign particles lodged in guide rail
Adjust or replace
Incorrect engagement of motor pinion with drive cable
Decrease in motor`s clutch slipping force
Increased sunroof sliding resistance or interference of sunroof with drive cables, weatherstrip, etc. due to mal adjustment of panorama sunroof
Noise in motor (clutch slipping noise from motor when sunroof is fully opened or closed is not an unusual noise
Incorrect engagement of motor pinion with drive cable
Check pinion installation and Re-tighten motor
Worn out or damaged motor pinion bearing
Replace motor assembly
Worn out or deformed drive cable
Replace
Door glass fails to operate up and down
Incorrect window glass installation
Adjust position
Damaged or faulty regulator arm or regulator
Correct or replace
Door does not open or close completely
Incorrect door installation
Adjust position
Defective door check assembly
Correct or replace
Striker and latch not properly aligned
Readjust
Door hinge requires grease
Apply grease
Hood does not open or close completely
Striker and latch not properly aligned
Adjust
Incorrectly installed hood
Adjust
Incorrect hood bumper height
Adjust
Water leak through windshield end rear window
Defective seal
Fill with sealant
Defective flange
Correct

    Specifications

    Specifications ItemsSpecificationHoodTypeRear hinged, gas lifter typeFront DoorConstructionFront hinged, full door constructionRegulator systemWire drum typeLocking systemPin-fork systemRear DoorConstructionFront hinged, full door constructionRegulator systemWire drum typeLocking systemPin-fork systemTrunk LidTypeFront hinged, power trunk lid type (option)Seat BeltsFront3 point type with Emergency Locking Retractor (E...

    Special Service Tools

    S..

    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures


    Teaching Procedures 1. Key Teaching Procedure Key teaching must be done after replacing a defective PCM(ECM) or when providing additional keys to the vehicle owner. The procedure starts with an PCM(ECM) request for vehicle specific data (PIN code: 6digits) from the tester...

    Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting


    Trouble Symptom Charts Trouble Symptom 1 Trouble Symptom 2 Trouble symptomProbable causeRemedyThe set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of ECMCheck input and output signals at ECM Trouble Symptom 3 Trouble symptomProbable causeRemedyThe CC system is not canceled when the brake pedal is depressedDamaged or disconnected wiring of the brake pedal switchRepair the harness or replace the brake pedal switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 4 Trouble symptomProbable causeRemedyThe CC system is not canceled when the shift lever is moved to the "N" position (It is canceled, however, when the brake pedal is depressed)Damaged or disconnected wiring of inhibitor switch input circuitRepair the harness or repair or replace the inhibitor switchImproper adjustment of inhibitor switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 5 Trouble symptomProbable causeRemedyCannot decelerate (coast) by using the "SET/–" switchTemporary damaged or disconnected wiring of "SET/–" switch input circuitRepair the harness or replace the "SET/–" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 6 Trouble symptomProbable causeRemedyCannot accelerate or resume speed by using the "RES/+" switchDamaged or disconnected wiring, or short circuit, or "RES/+" switch input circuitRepair the harness or replace the "RES/+" switchMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 7 Trouble symptomProbable causeRemedyCC system can be set while driving at a vehicle speed of less than 40km/h (25mph), or there is no automatic cancellation at that speedMalfunction of the vehicle-speed sensor circuitRepair the vehicle speed sensor system, or replace the partMalfunction of the ECM signalsCheck input and output signals at ECM Trouble Symptom 8 Trouble symptomProbable causeRemedyThe cruise main switch indicator lamp does not illuminate (But CC system is normal)Damaged or disconnected bulb of cruise main switch indicator lampRepair the harness or replace the part...

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