Hyundai Sonata Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Hyundai Sonata

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Hyundai Sonata Problems

Improved Timing Chain Tensioners Available to Correct Noise on Startup

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.

Check Engine Light Due to Faulty Accelerator Pedal Position Switch

Problems with the accelerator pedal position switch may cause the Check Engine Light to illuminate; an improved switch is available to fix this problem.

Parking lights don't turn off

    Parking lights not turning off intermittently or all the time. The common problem is with the cabin fuse box.  Complete replacement of the assembly is necessary to fix the problem.

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Hyundai Sonata Questions

Does 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...

2009 Hyundai Sonata gls has a flashing check engine light & shakes (2 answers)

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.

One mechanic says replace power steering pump and other said start with power (1 answer)

Steering pressure hose first. Which should I believe?

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Hyundai Sonata Recalls

Driver'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.

Power Steering Assist Fails

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.

Brake Lights Stay Illuminated

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.

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Hyundai Sonata Reviews

I bought my 2009 Hyundai Sonata in 2010. It was a great car and never had any issues with it. Have driven it cross country round trip 3 times. Until I had to have the timing chain replaced and took it to a 'certified' shop near me who failed to clean out the oil pan when they replace the chain and gears. The metal pieces from those old gears got into the oil pump and caused it to fail which...
Comfortable ride, a bit noisy with a/c, lots of electronic sensor and other mechanical issues that I experienced and read about but Hyundai has not been responsive to recall or covering under warranty. Buyer beware unless you know a certified mechanic, a backyard mechanic may be ill equipped to diagnose the various computer technological issues with this vehicle.
Battery keeps dying, I guess I have to replace it and I need a relay switch to the fan for the radiator. I go on line to ROCK AUTO PARTS. COM. I SHOPPED ON LINE AND COMPARED PRICED, ILL NEVER BUY PARTS FROM AUTO ZONE OR O'REILYS AGAIN. VERY REASONABLY LOW PRICED PARTS. I'm on a fixed income so I really have to be fruggle. You should visit this place.

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