Hyundai Sonata Repair and Maintenance
A guide to problems, costs, maintenance and repair for your Hyundai Sonata
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Hyundai Sonata ProblemsConfirm Latest Software For Transmission Control Module and Correct Fuild For Proper Shift Quailty
Prior to replacing the automatic transmission fluid (to improve shift quality), make sure that the transmission fluid level is correct. Also, make sure the computer that controls the transmission has the most up-to-date adaptive programming information. When servicing these transmissions be sure to use fluid approved by Hyundai.
On the 2.7L V6 and 2.4L 4 Cylinder, a defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.
If you experience excessive engine noise on startup (after the engine has been turned off for several hours) that lasts for more than five or six seconds, turn off the engine and check that the engine oil level is correct. If the oil level is correct, the noise may be caused by the timing chain tensioner. Hyundai has an improved tensioner to correct this problem.
Hyundai Sonata QuestionsDoes it have a NEGATIVE GROUNDED SYSTEM, or a POSITIVE GROUNDED SYSTEM? (1 answer)
Twice in the last couple of months, my car didn't start up after it had been sitting 3 or 4 days. Mechanic checked the battery and alternator, but found no problems there. I finally bought a Stanley Fatmax professional power station, and the instructions want to know whether my car has Neg or...
My 2009 Hyundai Sonata has a flashing check engine light, mildly shakes when in park and when I accelerate it starts to shake a little bit more.
Steering pressure hose first. Which should I believe?
Hyundai Sonata RecallsDriver's Frontal Air Bag Does Not Inflate Properly
The second stage of the dual stage driver's frontal air bag may not deploy properly due to a missing chemical enhancer necessary for the second stage deployment. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.
The electronic power steering circuit board may be damaged and result in a loss of power steering assist. Dealers will replace the control unit for the electronic power steering free of charge to resolve the concern.
The brake pedal stopper pad can deteriorate, resulting in the stop lamp switch plunger to remain extended when the brake pedal is released. This will cause the brake lights to stay illuminated, and will allow the automatic transmission shift lever to be moved out of park without depressing the brake pedal. Dealers will replace the brake pedal stopper pad with an improved part free of charge to resolve the concern.