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.
Resources for the Repair and Maintenance of your 2004 Hyundai Sonata
2004 Hyundai Sonata
2004 Hyundai Sonata Problems
Problems with the accelerator pedal position switch may cause the Check Engine Light to illuminate; an improved switch is available to fix this problem.
Concerned about safety, the NHTSA is investigating reports of rust forming at the front suspension mounting points, the frame, and the sub-frame. Some of these vehicles may have been recalled for this issue. For more information, please click here»
Premature timing belt failure may result in serious engine damage. When replacing a broken timing belt, it is important to inspect and possibly replace the crankshaft position sensor; it is often damaged when the timing belt breaks.
If the automatic transmission does not shift properly and the Check Engine Light illuminates, the speed sensors in the transmission may have failed. The sensors are simple and inexpensive to replace.
2004 Hyundai Sonata Recalls (Recent)
Summary: HYUNDAI IS RECALLING 188,282 MY 2001-2004 SONATA AND MY 2001-2004 XG300 AND XG350 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. ROAD SALT APPLIED IN THESE JURISDICTIONS DURING THE WINTER MONTHS MAY RESULT IN PROGRESSIVE, INTERNAL CORROSION OF THE FRONT SUB-FRAME ON THE VEHICLES, AND MAY RESULT IN THINNING OR PERFORATION OF THE SUB-FRAME STEEL. THE CORROSION IS FREQUENTLY VISIBLE AND OFTEN DISCOVERED DURING INSPECTION OR ROUTINE MAINTENANCE, AND OWNERS MAY ALSO HEAR NOISES OR NOTICE TIRE MISALIGNMENT AND STEERING PULL. IF THESE SIGNALS ARE UNDETECTED OR UNHEEDED, THE CORROSION MAY PROGRESS AND THE FORWARD MOUNTING OF THE LOWER CONTROL ARM MAY DETACH FROM THE SUB-FRAME.Learn more »
2004 Hyundai Sonata Questions and Answers
where do you replace the blower motor in these cars and is it very easy
where in the fuse block is the fuse for the side view mirrors located?
from full stop or idle - misses on start to accelerate at lower speeds once at cruise seems okay - new plugs / filters / mechanic also had manifold cleaned has 128,000 service - Service record is t...
How reliable is the 2004 Sonata (2.4L), particularly the transmission and engine above 100K?
Are the general maintenance and repair costs expensive?
And does this car take regular or premium ...
2004 Hyundai Sonata Reviews
This car is a nightmare for me. I brought this car new and the car is now going on 8 years old and it has so many problems. I took it to my mechanic the other day and he informs me that I need: rear hub bearings, a rack, injectors and IAC (whatever that is). Also, my timing belt needs replacing. My car has approx. 120,000. I should have brought a Nissan like my family always did. When I had my Nissan, it was still running at 15 years old. It really did not have any problems. I never had to replace the rear hub bearings, a rack, injectors and IAC or any major parts. I would not suggest to anyone to buy a Hyundai.
The 2004 Sonota has got to be the biggest nightmare I have ever owned. I purchased it brand new in 2004 and by 2005 the clutch had to be replaced. Then by 2007 the flywheel, clutch, rear suspension, front axel and transmission all needed replacing. This car is still sitting in my garage and had been since 2007. The only good parts of the car would have to be the body and interior since it was only used less than three years. Stay far away from these type of cars, they will run you into the ground financially. If anyone needs the car cheap please get in contact with me at firstname.lastname@example.org The car is gold in color.
I bought the car new and it still is like new. I had the brakes done, transmission maimtinance, and just the basics up keep. I love to drive it. It has such great pic-up , even at 135,000 miles. It rides like it is gliding above the ground. The most smooth ride I have ever experianced.As smooth as the Lincoln we had. I would ecomend the Hyundai to everyone.
I bought my 2004 Hyundai Sonata in the Summer of 2004. It had 17 miles on it. It was the first car I had ever bought without test driving! My husband said I would love it (he was a salesman for a Hyundai dealership), and I DID! It is the best car I have ever owned. Very low maintenance and the little things that have had to be repaired, ie., electric side mirrors, some fuses, gas door won't unlock, have been very affordable. I get my "baby" new tires often, regular oil changes and it just keeps going, going and going and now has 113,000 miles. My newest problem is the air conditioning. Last summer it started blowing warm air but when my husbands puts free on in it, it goes for another 4 weeks so we have not had it checked out yet. But overall.....NO COMPLAINTS! I would definitely buy and recommend this car again!! Oh! And I only have one car payment left!! I am hoping to get another 70,000 mi out of it before I go looking for a new one!
I just bought this car a month ago and runs great. Bought it used now just doing minor tune ups here and there nothing big. Just wondered if the last owner kept up with maintenance. All and all it has a comfy ride, good on gas and glad to own a Sonata.