A defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.
Problems for specific Hyundai models:
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Most reported Hyundai problems
Due to several possible engine-related problems, the Check Engine Light may illuminate. If this occurs, reprogramming the computer that controls the engine should 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.
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.
My power windows won't work. Power locks function well but the buttons for my windows won't.
Engine stalling or failure to start may indicate crankshaft angle sensor failure; Hyundai issued a recall.
Hyundai issued a recall on the airbag computer; it needs to be reprogrammed to prevent the airbags from deploying incorrectly during an accident when a child car seat has been placed in the passenger front seat.
A rough idle or hard starting condition may develop, most noticeable when the engine is cold, with fault code P161B stored in the powertrain control module (PCM). Our technicians tell us that a PCM software upgrade is available to correct this concern.
When the shift lever is in D3 and sport mode is selected the transmission may downshift unexpectedly when the throttle is depressed. Our technicians tell us there is a transmission control module (TCM) software update available to correct this concern.
A lack of power or stalling condition may develop as a result of a failing fuel pump. Replacing the failed fuel pump will be necessary to correct this concern.
When I move the shifter on my automatic tramsmission to the right to use the + - there is no response.
Excessive wear of tires due to alignment problems. Dealer suggested replace front struts which only made problem worse. Re-check by dealer indicated inability to adjust due to non adjustable front upper ball joints. Replacement ball joints priced at over $400 plus labor and then add front alignment or all 4 wheels at more cost for a total of $685.50 cost. Left dealer with no further attempt to repair. Went to local garage who purchased MO...