Hyundai Sonata Repair and Maintenance

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

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Hyundai Sonata Problems

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.

Noise on Startup Due to Failing Timing Chain Tensioner

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.

Poor Shift Quailty of Automatic Transmission

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.

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Hyundai Sonata Questions

Why lie rpm and rough idle & shaking? (1 answer)

Past 2 months, my Hyundai Sonata, 2005 has a lower idle at 700rpm, very rough idle and shaking.
Could this be the Egr valve malfunctioning?

car will not up shift (1 answer)

installed a new transmission that that had only 73k on it and it works great but want up shift

my car dying for no reason and won't start back for hour what could be the prob? (2 answers)

The check engine light has been on for a while now my car will die for no reason after running perfectly smooth it happens both while driveing and sitting idle and wont start back for 2 hours to two days and when its starts it runns no problem. Ivereplaced the mass air sensor oxygen sensor intake...

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Hyundai Sonata Recalls

Sunroof Panel Detaches From Vehicle

The panoramic sunroof panel may detach from the roof of the vehicle while driving, due to a bonding failure with the sunroof wind deflector. Dealers will repair the wind deflector anchor plate free of charge to resolve the concern.

Driver's Frontal Air Bag Does Not Protect Driver's Neck Sufficiently In An Accident

The driver's frontal air bag as designed may not properly protect the driver's neck in an accident. Dealers will replace the driver's frontal air bag module free of charge to resolve the concern.

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.

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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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