Sudden Unintended Acceleration in 2010 CX-9 - Mazda Forum
 
LinkBack Thread Tools
post #1 of 3 (permalink) Old 09-24-2011, 11:36 PM Thread Starter
Mazda Newbie
 
Join Date: Sep 2011
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Sudden Unintended Acceleration in 2010 CX-9

A week ago Sunday I was driving my 2010 CX-9 (around 19K) on the interstate to pick up my son from a birthday party. I changed lanes, put my foot on the gas pedal to accelerate, and suddenly felt surge of acceleration. Tried to brake, and it slowed the car some, but the engine torque was considerable, it felt like trying to rein in a wild bronco. Realized that I was experiencing unintended acceleration. Made sure I was pushing down on brake and not gas pedal so I could rule that out. At that point, felt I had to move over to shoulder as fast as possible. Did so and began applying emergency brake (I know that was mistake now). It slowed car more but still wouldn't come to a stop. Finally, put car in neutral and that stopped the car.
Had car towed to nearest Mazda dealer and they kept it for almost a week but couldn't find anything wrong (no electronic record left) and couldn't replicate. Only thing they could think of was that my all-weather mat had slid forward and depressed gas pedal. I reported to NHTSA but so far haven't found anything reported online about similar problems with this make and model. So I picked car up yesterday, but I am still very concerned that this will happen again, God forbid with my children in the car or with my wife driving.
Can anyone think of other suggestions of what I might do?
DBS50 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old 02-09-2016, 12:21 AM
Mazda Newbie
 
Join Date: Feb 2016
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by DBS50 View Post
A week ago Sunday I was driving my 2010 CX-9 (around 19K) on the interstate to pick up my son from a birthday party. I changed lanes, put my foot on the gas pedal to accelerate, and suddenly felt surge of acceleration. Tried to brake, and it slowed the car some, but the engine torque was considerable, it felt like trying to rein in a wild bronco. Realized that I was experiencing unintended acceleration. Made sure I was pushing down on brake and not gas pedal so I could rule that out. At that point, felt I had to move over to shoulder as fast as possible. Did so and began applying emergency brake (I know that was mistake now). It slowed car more but still wouldn't come to a stop. Finally, put car in neutral and that stopped the car.
Had car towed to nearest Mazda dealer and they kept it for almost a week but couldn't find anything wrong (no electronic record left) and couldn't replicate. Only thing they could think of was that my all-weather mat had slid forward and depressed gas pedal. I reported to NHTSA but so far haven't found anything reported online about similar problems with this make and model. So I picked car up yesterday, but I am still very concerned that this will happen again, God forbid with my children in the car or with my wife driving.
Can anyone think of other suggestions of what I might do?
Hi - this is several years later, but I had two similar incidents in fall 2015 with a 2008 Mazda CX-9 Grand Touring. I've had it for almost 4 years, no issues until recently.

In the first incident, I started the car in our driveway but hadn't yet put it into gear when the engine revved really fast and stayed there. I wasn't pressing the accelerator, and the mat is almost impossible to get stuck down there with the hook keeping it in place.

In the second incent, I was backing out of a spot in a grocery store parking lot when the engine revved and we went backwards fast. I was able to apply the brakes, stop, and shift (into D, should have chosen N but it happened very fast), and the engine went back to normal revs after that.

Two trips to the dealership, including a call to Mazda national, and no diagnosis. I also reported the issue to NHTSA in late Dec 2015. We're now getting rid of the car, which is really disappointing because it's a financial loss and also very nice to drive.
mike12340 is offline  
post #3 of 3 (permalink) Old 06-24-2016, 03:27 PM
Mazda Newbie
 
Join Date: Mar 2016
Posts: 7
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Get rid of the all-weather mats! Install only factory mats with floor clips.
kids_dad is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mazda Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome