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Anyone experience Sudden Unintended Acceleration in a Santa Fe?

143 messages,  Last post on Apr 14, 2013 at 1:20 PM

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What is this discussion about? Hyundai Santa Fe, SUV

Messages Page 13 of 15

#117 of 143 Re: Anyone experience Sudden Unintended Acceleration in a Hyundai Santa Fe? [bryancos] by lleflar

Feb 14, 2012 (8:44 am)

Replying to: bryancos (Dec 16, 2009 1:26 pm)
I too have had an issue with sudden acceleration surges with my 2005 Hyundai Santa Fe. My engine light finally came on, after taking it to a mechanic several times with the issue, only to have no real reason for the issue to occur. After the check engine light came on (this past Saturday), I took my car to Advanced auto parts to have it checked out. They told me the issue was P0121 which is Throttle Position Sensor/Switch "A" Circuit Range/Performance. I contacted my mechanic who told me it would cost approx. $250 to have the sensor replaced. I'm willing to pay the $250, with fingers crossed that it works, instead of purchasing a new car. If this replacement does not work, I will never buy or recommend a Hyundai to anyone I know. This is a serious issue that Hyundai needs to address before someone seriously gets hurt. I am appauled that they have not taken the proper actions to address this issue before it really gets out of hand. I will let you all know if the replacement of the sensor works.

#118 of 143 Unintented acceleration and hesitation by retuark

Feb 19, 2012 (9:18 am)

I am so glad I am not the only one. I own a 2005 Santa Fe, that was working just fine until last week. I was pulling onto a busy highway, and all of a sudden the vehicle hesitated quite substantially. I thought because it was so busy the car behind me was going to crash right into my back end. Then I was driving along later that day it was constantly accelerating. When I stopped the car, and had the break on, it was reving really high, and I was afraid to take my foot off the break. The check engine light came on, and because I was working I couldn't get it into a garage right away, so thought I would later that afternoon. After I shut down the vehicle, the check engine light did not come back on...but the problem is still happening almost everyday for a smaller amount of time. I am afraid to drive it anywhere right now, and can't go without it for very long. Please let us know if the sensor you got replaced works out for you!
THANKS!!!

#119 of 143 Re: Anyone experience Sudden Unintended Acceleration in a Hyundai Santa Fe? [lleflar] by jogatau

Mar 15, 2012 (8:41 pm)

Replying to: lleflar (Feb 14, 2012 8:44 am)
Interesting post, I tought I was alone having this problem until I found this post just now; Thanks everyone for your comments, this is unbelievable.
 
I live in Canada and have a SF 2005 - 3.5L AWD which I bought new in 05 which now has 251,000 km on it. I to have had SUA over the years every once in a while and ever since it was new. I noticed that most of the time this happens is when I come to a full stop then start rolling again; slightly depressing the gas pedal; within a fraction of a second; the vehicle blasts off (heads fly backwards) as if I had put the gas pedal to the floor for a second or so; then it quickly resumes back to normal. Will be days sometimes weeks before it does it again and sometime the same day. Its very sporadic with no real patterns as to when it occurs although seams a little more frequent lately. I mostly do highway driving and use the cruise control everyday. I did not have any close call for say although from reading this awesome post, I will keep a close eye on this issue and will order and change the throttle position sensor and inspect the cruise control cable and it's assembly.
 
Also, if this can help, way back I had noticed that occasionally when I filled up with gas and then drove off, within a couple hundred feet the motor would kind of die and hesitate dramatically before taking off similar to an SUA; after some reading in other post (way back), some had reported similar issues with other car brands and suggested the following, when filling up with gas, tighten the gas cap all the way until you hear several clicks (as to do with proper venting our pressure balance within the gas tank) which I tried and did not really work; my gas cap needs a key to open it therefore, instead I do the opposite, I tight the gas cap and back it off to hear a few clicks and never had this issue ever since I started doing this (Note that I've also tried leaving the cap loose although did not work; perhaps one could also try another cap). This may or may not be associated with the SUA problem, who knows, I do not have severe SUA, although it still happens from time to time for a fraction or a second or so and goes back to normal immediately after (unlike some post I've read in here and which I deeply sympathize with). Perhaps another thing to try which cost nothing and can't hurt re: gas cap (as mentioned herein); seems like pressure or back pressure within the gas tank needs some kind of balance. Give it try who knows, it may reduce the problem. I do like my Santa Fe, found it hard on gas although, don't think I'll buy another one. Hoping this helps somewhat. I'll look deeper in the SUA and report back if I find some kind of possible cure. In the mean time drive this beast carefully. Thanks
 
Jo

#120 of 143 Re: Anyone experience Sudden Unintended Acceleration in a Hyundai Santa Fe? [lleflar] by stewpop

Apr 07, 2012 (8:40 am)

Replying to: lleflar (Feb 14, 2012 8:44 am)
Just wondered if the replacement of the sensor worked. My 2009 Hyundai Santa Fe. It lost complete throttle control and would only idle. Got to the side of the road & turned it off and unhooked the battery cable. This reset the electronics in the car( clock, radio, etc) and with it the throttle sensors. Was able to restart and it drove perfectly. We had been having hesitation issues for a couple of months and now it drives smoothly. Just don't know how long it will last though.

#121 of 143 Re: Anyone experience Sudden Unintended Acceleration in a Hyundai Santa Fe? [jogatau] by mikepen

Apr 07, 2012 (2:45 pm)

Replying to: jogatau (Mar 15, 2012 8:41 pm)
I just had the same issue this afternoon in a 2009 Hyundai Santa Fe, this issue has been brought up to the dealer by the owner of the vehilce several times and they have been reluctant to solve the problem. I was scared for the lives of the occupants of the vehicle including a 3year old girl. This is a very serious matter and Hyundai needs to get this resolved.
I will be contacting local media in Edmonton when I get home to bring this matter to light. It's a matter of safety to not only the occupants of the vehicle but other drivers on the road (or pedestrians for that matter).
The vehicle accelerated to the floor and and would would not slow down, at first I was braking, but it only slowed the vehicle down a little. We went through an intersection (luckily the light was green) at the point I put the vehicle in neutral and braked to the side of the road. This was not a matter of the floor mat pressing on the gas as that was the first thing I checked, the gas pedal was stuck to the floor and there was nothing I could do about it.

#122 of 143 sudden unintened acceleration with Hyundai Santa Fe by susieqrn

May 15, 2012 (2:26 pm)

Bought new 2009 Santa Fe V6 3.3L 24 valve engine in July 2010. Vehicle load with heated leather seats, sunroof, and had remote start installed. Loved, loved the car and had absolutely no problems until 3/29/2012. Had a terrible experience that I never want again. While pulling left into a parking space with my foot on the brake and car in drive, in a split second, the car accelerated to full speed jumping a 6" curb and plowing through landscaping coming to a stop less than 2 feet from the building. I had both feet on the brake pushing as hard as I could. Thank God I stopped because of the people inside. My daughter was in the passenger seat. We had just come from a doctor appointment for her where she had staples removed from the front of her neck. I can't imagine what could have happened if we had hit the building and our airbags had opened. Being fearful of driving the car, I had it towed to the dealer. After checking the car over, the sales manager told me nothing was found wrong with the car. He stated the floor mat could have gotten in the way. The mats came with the car and are locked in place. The work order stated the accelerator was checked for sticking. MY FOOT WAS ON THE BRAKE! One mechanic stated "well the accelerator IS close to the brake." Now I have a $27,000 automobile with 8000 miles on it that I refuse to drive. I should also mention that before this happened that several times after turning when I used the accelerator there was a second of hesitation followed by a second of too fast acceleration but evened out right away. I thought nothing of it but now wonder if this was a warning of what was to come.

#123 of 143 Don't neglect to file complaints with NHTSA / safercar by bryancos

May 15, 2012 (4:15 pm)

Sorry to hear about your experience. I've been there. Replacing the THROTTLE POSITION SENSOR (at my own expense because the dealer nor Hyundai would take initiative as that might be seen as them acknowledging fault or an issue) fixed our problem after experiencing unintended acceleration three times. But please do not forget to report the problem to the National Highway Traffic Safety Administration / NHTSA. Go online at safercar.org or call the toll free number. See my original post for more info.

#124 of 143 Re: Anyone experience Sudden Unintended Acceleration in a Hyundai Santa Fe? [mikepen] by bev2001

May 25, 2012 (3:20 pm)

Replying to: mikepen (Apr 07, 2012 2:45 pm)
Hi
I also live in Canada. I reported this to Transport Canada and a Regional Official, an Engineer, followed up and asked some interesting questions. He actually came and visited and examined peddle separation and height checked. We visited place where the incident happened. One point of note there does not seem to be a good deal of diagnosis sensing on Hyundai software drive-by-wire, neither is there braking override of throttle position. Do report this to TC it's a serious safety issue. The web site is https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/PCDB-BDPP/Index.aspx

#125 of 143 accelerrator stuck in full speed in passing gear by conrad84

Jun 12, 2012 (5:39 am)

This appears to be another issue not related to sudden unintended acceleration, but I have now experienced several times during road trips when I have activated the passing gear--the acelerator pulls down and stays totally depressed to the floor board and will not release with foot pressure with out a lot of braking and foot banging! My vehicle is a 2008 Santa Fe, 6-cyl. awd. I'm lucky that this has not caused an accident or death--but it is a harrowing experienced to have the vehicle taking over at FULL THROTTLE not in my control!
Have others experienced this condition? Dealer says nothing appears or recorded to confirm this issue??

#126 of 143 Sudden unintended acceleration 2008 Sante Fe by jmarcell

Jun 19, 2012 (11:04 am)

I also experienced Sudden unintended acceleration in my 2008 SanteFe 45K mi. I was in slow traffic creeping along when the engine reved and the car accelerated very quickly. Brakes weren't enough to stop it. I crashed into the car ahead of me. I am terrified. I took it to the Dealer and like everyone else who has posted, they said they couldn't find anything wrong with the car. On another occassion, my husband said he felt the pedal sticking.

Messages Page 13 of 15

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