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Hyundai Sonata Maintenance and Repair

3029 messages,  Last post on Dec 08, 2009 at 6:03 AM

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What is this discussion about? Hyundai Sonata, Sedan

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#21 of 3029 Solving the Shift Problem by morris20 Dec 10, 2001 (11:38 am)
I have a new 2002 LX experiencing the same shifting problem described by several persons on this meaage board. Talked to one service technician who said it was normal (called it "shift flare" to decrease wear on the clutch). Two other service technicians said I should bring the car in for a test drive, but they were not aware of this consistent problem with Sonatas.   I notice that several people on this message board were trying to resolve their problem in October of this year. Could those folks please be kind enough to update the rest of us with how or if the situation was resolved. I would like to be able to tell the technicians how this problem was addressed by other service departments. Thanks for your help
#22 of 3029 Ditto.... by nato1 Dec 11, 2001 (2:05 am)
I have a '02 gls with the same problem in the 2-3 shift. I have a funny feeling the slip is in the lock-up torque converter. There aren't to many bands/clutch packs that can withstand that type of slip (especially for 100k miles). Thanks Nate
#23 of 3029 Transmission Slip by ufgators Dec 11, 2001 (7:07 am)
Is the slip very noticeable and annoying, and is it consistent?   Thanks, Justin
#24 of 3029 slip by nato1 Dec 11, 2001 (7:22 am)
I notice it, but I was a mechanic for 10 yrs. I am used to the 'hammer shift' from v8's. The shift is consistent, but isn't annoying. It's only when it's cold. Maybe the transmission programmers missed a byte in the translation.
#25 of 3029 Transmission problem cured ... by lanman2 Dec 13, 2001 (11:59 am)
Hi Everyone! My 2000 Sonata GLS, w/option 13, had a vibration when it was operating between 20 and 30 MPH. It was a very definite shimmy and could be felt during acceleration or deceleration. It didn't matter whether the car was warm or cold.   The technician determined it was an internal problem with the transmission and replaced it. No problems since then!   I now have over 30,000 miles and consider this car to be 1 of the most trouble-free vehicles I've ever owned!   LANMAN2
#26 of 3029 Transmission Slip Fix by morris20 Dec 13, 2001 (6:54 pm)
After posting my problem several days ago, I've found the solution!   If your experiencing hesitant shifting (shift flaring or slippage) on the 2002 Sonata automatic transmission, don't let a dealer or service center tell you there is no problem. I had several service centers tell me it was "normal" or "they didn't notice anything."   Finally, I forced a service center here in Riverside, California to diagnose the problem (they're great!). It took a while, and I had to leave my car overnight. But here's the answer.   The Power Control Module (a computerized part) that controls when the auto. trans. shifts needs to be updated. The service center contacted Hydundai, and Hyundai indicated they knew of the problem and have manufactured an updated Power Control Module. The service center, however, has to do a "one-for-one" exchange, which means they have to remove the part, send it to Hyundai, and then receive the new part and install it (all covered under warranty of course). But it means your car will be in the shop for a couple of days. I plan on requiring Hyundai to give me a rental car for that period pursuant to their warranty.   Good Luck!
#27 of 3029 Fixed Problem by ufgators Dec 14, 2001 (6:42 am)
Question: I have not gotten my 2002 Sonata yet, will new sonata's from this point on be installed with this new updated power module. Also, please keep us updated on whether or not this solution acutally works.   Thanks, Justin
#29 of 3029 Transmission slip by mbojan Dec 14, 2001 (1:51 pm)
Hi my name is Marc. I have the base '02 Sonata. I bought my car on November 21. I have noticed that my transmission has slipped twice. Once when it was cold (low 30's) and it had just stopped raining. Originally thought it was due to the slippery road. Seemed the car suddenly downshifted. However, the transmission slipped again on my way home about 2 weeks ago. Same situation where the transmission suddenly downshifted like it couldn't decide which gear it should be in . The good news though is that it hasn't happened again, but it's also been very warm for this time of year in Maryland. Thanks to everyone who posted their comments on the board but especially 'Thanks' to 'morris20' for the info. I plan on approaching my service rep with the information. I need to find out as well if my car has the updated module. I'll keep everyone posted.
#30 of 3029 Dimming Headlights by tmstanle Dec 18, 2001 (11:15 am)
I have a 2000 Sonata GLS V6 - the headlights dim while driving. I've had it in to one dealer who said "can't duplicate the problem" so long. Another dealer told me, yes that is a problem. He has changed many alternators and no solution.   Anyone else have this problem - and what did you do?

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