Troubleshooting

Heavy weight feeling on steering wheel

Expected cause	Countermeasure
Faulty front wheel alignment	Adjust or repair
Over rotation resistance of lower arm ball joint	Replace
Over rotation resistance of strut bearing	Replace
Too low amount of tire air pressure	Adjust

Steering wheel recovery trouble

Expected cause	Countermeasure
Faulty front wheel alignment	Adjust or repair

Noise or ride comfort trouble

Expected cause	Countermeasure
Faulty wheel alignment	Adjust or repair
Inappropriated tire air pressure	Adjust
Faulty function of shock absorber	Replace
Damaged coil spring	Replace
Damaged stabilizer	Replace
Damaged lower arm bushing	Replace
Stabilizer link fixing nut got loose	Retighten
Damaged stabilizer link (dust cover tearing, ring broke away)	Replace

Abnormal worned out of tire

Expected cause	Countermeasure
Faulty wheel alignment	Adjust or repair
Inappropriated tire air pressure	Adjust

Unstable steering wheel

Expected cause	Countermeasure
Front wheel alignment trouble	Adjust or repair
Lower arm ball joint turning resistance is too small	Replace
Damaged lower arm bushing	Replace

Vehicle pulls to one side

Expected cause	Countermeasure
Wheel alignment trouble	Adjust or repair
Unbalance of right/left tire	Adjust or replace
Damaged or deformed lower arm bushing	Replace
Damaged coil spring	Replace

Steering wheel vibration

Expected cause	Countermeasure
Front wheel alignment trouble	Adjust or repair
Wheel balance trouble	Adjust or repair
Lower are ball joint turning resistance is too much or too small	Replace
Damaged stabilizer	Replace
Damaged lower arm bushing	Replace
Shock absorber operating trouble	Replace
Coil spring trouble	Replace

Under Body Parts Causing Abnormal Noise

Conditions for occurrence	Abnormal noise on uneven ground
Parts	Stabilizer bar link	Stabilizer bar bushing	Lower arm ball joint	Strut insulator
Trouble area
Type of abnormal noise	Rattling, Creaking noise	Squeaking noise	Clunking, Knocking noise	Clicking, Creaking noise
Occurring area	Under part	Under part	Under part	Upper part
Driving speed	20 - 40 ㎞/h (12.4 - 24.9 mph)	While low speed driving (20 - 40 ㎞/h (12.4 - 24.9 mph))	20 - 40 ㎞/h (12.4 - 24.9 mph)	-
Condition of road	Uneven road / bump	Uneven road / bump	Uneven road / bump	Uneven road / tough road
Reason	Loosen / leakage (teared down) / corrosion	Separation of bar and bushing / slip	Loosen / leakage (teared down) / corrosion	Tightened (decrease torque) and interference

Conditions for occurrence	Abnormal noise while going through uneven road / tough road
Parts	Strut / Shock absorber	Strut / Shock absorber	Strut / Shock absorber	Strut / Shock absorber
Trouble area
Type of abnormal noise	Rubbing noise	Clicking, Creaking noise	Rubbing noise	Clicking noise
Occurring area	Upper part	Upper part	Upper part (rear)	Upper part (rear)
Driving speed	15 - 25 ㎞/h (9.3 - 15.5 mph)	15 - 25 ㎞/h (9.3 - 15.5 mph)	15 - 40 ㎞/h (9.3 - 24.9 mph)	30 - 50 ㎞/h (18.6 - 31.1 mph)
Condition of road	Uneven road	Uneven road	Uneven road and tough road	Tough road
Reason	Friction sound from piston load and bumper rubber inner side	Rolled down bumper rubber (tapping sound of bumper rubber upper part and insulator under part)	Adhesion trouble of upper bracket rubber	Suspension tuning trouble (damping force, rubber characteristic)

Conditions for occurrence	Abnormal noise on uneven road	Abnormal noise while steering
Parts	Lower arm "G" bushing	Cross member bushing	Strut bearing	Wheel / Hub bearing
Trouble area
Type of strange sound	Rubbing noise	Clicking noise	Clicking noise	Roaring noise
Occurring area	Under part	Under part	Upper part	Lower and side part
Driving speed	10 - 40 ㎞/h (6.2 - 24.9 mph)	-	-	20 - 60 ㎞/h (12.4 - 37.3 mph)
Condition of road	Bump / tough road	Even road	Even road	Even road
Reason	Dropped off / fallen off	Dropped off / fallen off	Grease leakage	Damaged from outer impact, foreign substance inflow

Wheel and tire diagnosis

Wheel / tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or deceleration. 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 wheel. 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 excessively 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
• Damaged or worn brake discs • Sudden excessive braking	• Toe adjustment out of specification • Damaged or worn tie rods • Damaged knuckle	• Toe adjustment out of specification • Lack of rotation • Damaged suspension component