2004 Hyundai Sonata Repair and Maintenance Costs
A guide to repairs, service, and maintenance costs for your 2004 Hyundai Sonata
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2004 Hyundai Sonata ProblemsParking 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.
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.
2004 Hyundai Sonata QuestionsHad dealer install sunroof in 2004. It blew off in Dec. How can it be replaced? (1 answer)
After it blew off and shattered on the road while driving on highway 59 in SE Kansas Dec.26, we noticed rust on the seal--moisture must have seeped in over the years. We took it to a car glass shop. They couldn't replace it. We can't drive with a roof, so where/how/who can replace it? ...
This was my reading when it went through Emissions.
Monitors Not Ready:
MIL Remains lit at key-on-engine-running
MIL Commanded On
1 Trouble Code Reported:
P0056 HO2S Heater Circuit Bank 2 Sensor 2