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Hyundai Sonata Transmission Questions

155 messages,  Last post on Oct 13, 2009 at 12:20 PM

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#147 of 155 SonataGLS-07 Transmission doesn't engage in Drive by Vinnieudv8 Jun 16, 2009 (6:14 pm)
Have 30K mi on a 2007 Sonata GLS. Experienced a recurring problem with transmission starting at 25K miles. Automatic transmission doesn't engage for 10 minutes when shifted into Drive. I can shift into Rev and it engages immediately. This occurred twice when the car is first started, once when stopped at a stoplight and the transmission disengaged for 2-3 minutes. When this happens, the shifter is in Drive, transmission is disengaged, the drive gear indicator will blink rapidly R-D-R-D-R-D......R-D as if it can't decide if it is in Rev or Drive. Also, when this happens, there are electrical anomolies ...the dash lights, radio and clock led's blink in unison with the turn-indicator, turn-indicator flashes faster than usual. Shut the car off for a while and everything seems OK, transmission engages and shifts fine. First time, dealer replaced tranny range sensor and no problem for 6 months. Second time, dealer replaced sport mode switch, but problem recurred within a week. On third occurrence, dealer can't find any problems. Will try talking to another dealership/mechanic and see what they can find. Anyone have similar problems??? Replies to this message: newowner10 (Jun 17, 2009 5:32 am) Vinnieudv8 (Jun 17, 2009 10:49 am) mikemartin (Jun 17, 2009 11:31 pm) Vinnieudv8 (Jun 18, 2009 7:28 am)
#148 of 155 Re: SonataGLS-07 Transmission doesn't engage in Drive [Vinnieudv8] by newowner10 Jun 17, 2009 (5:32 am)
Replying to: Vinnieudv8 (Jun 16, 2009 6:14 pm) You should try another dealer. With all that is going on the problem is not with the transmission. You could have a bad ground. How would the transmission effect the turn signals unless the ground is feeeding back thru the lamps and clock. If you explain all of this to a knolegable person they should know where to start. Replies to this message: Vinnieudv8 (Jun 17, 2009 10:49 am) mikemartin (Jun 17, 2009 11:31 pm) Vinnieudv8 (Jun 18, 2009 7:28 am)
#149 of 155 Re: SonataGLS-07 Transmission doesn't engage in Drive [newowner10] by Vinnieudv8 Jun 17, 2009 (10:49 am)
Replying to: newowner10 (Jun 17, 2009 5:32 am) Thanks newowner10. Appreciate your thoughts on this. I've emphasized the electronics whacking-out when the problem occurs. A bad ground would do it. Replies to this message: mikemartin (Jun 17, 2009 11:31 pm) Vinnieudv8 (Jun 18, 2009 7:28 am)
#150 of 155 Re: SonataGLS-07 Transmission doesn't engage in Drive [Vinnieudv8] by mikemartin Jun 17, 2009 (11:31 pm)
Replying to: Vinnieudv8 (Jun 17, 2009 10:49 am) Hyundai seems to be really dropping the ball on quality lately. If you go to Hyundai Forums, there are a lot of people still having problems with the front and now rear suspension, plus a ton of electrical and transmission problems are now surfacing.   I hate to see this happen because Hyundai seemed to be making great strides for a while there.   Let's hope they get back to making progress and fixing current issues.
#151 of 155 Re: SonataGLS-07 Transmission doesn't engage in Drive [Vinnieudv8] by Vinnieudv8 Jun 18, 2009 (7:28 am)
Replying to: Vinnieudv8 (Jun 17, 2009 10:49 am) Newowner10 gets the gold-star for his tip. Third time was charmed. Dealer found the electrical ground was missing a bolt. Said the ground was not properly installed at the factory. Interesting that it took 25K miles for a grounding problem to surface. Thanks Chaps!
#153 of 155 09 Sonata transmission downshift by ricomd Oct 13, 2009 (5:10 am)
I have a 09’ Sonata that when the weather gets cold and [the motor and transmission is cold] you start off with the car it shifts fine going up but if you stop within the first few blocks or miles, the car will lunge forward at about 2 to 3 mph and does a hard down shift. My dealer where we bought the car new last September 08’ thinks my wife and I are nuts. They are more concerned about getting it out quick for their ratings. Thanks; ricomd Replies to this message: bigredtx (Oct 13, 2009 7:00 am) ricomd (Oct 13, 2009 12:20 pm)
#154 of 155 Re: 09 Sonata transmission downshift [ricomd] by bigredtx Oct 13, 2009 (7:00 am)
Replying to: ricomd (Oct 13, 2009 5:10 am) i had the same problem and had to go to the dealership quite often. but dont give up they can do an adjustment to the transmission and it will solve the problem. also there is a tcm calibration update on the hynndai technical service bulletin that will tell them step by step instructions on how to correct this problem. i was ready to park that vehicle on their lot and walk away but now i love the vehicle. hope this helps Replies to this message: ricomd (Oct 13, 2009 12:20 pm)
#155 of 155 Re: 09 Sonata transmission downshift [bigredtx] by ricomd Oct 13, 2009 (12:20 pm)
Replying to: bigredtx (Oct 13, 2009 7:00 am) Ok, thanks, been very frustrating

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