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Hi, my 09 Mazda 6 with 110k miles has the DSCoff light on. No codes stored in ECU. I have being driving for around 1k miles with this problem and I have noticed that once the light when off for like 30 miles. That only happened once, it has being on permanently ever since.

Any idea what could the problem be? Thank you
 

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wheel speed sensor malfunction?

What's odd to me is that a) the DSC active light is also on and b) I'd expect a wheel speed sensor to also impact the ABS, which should set the ABS light -- unless that light is burned out.

Maybe check the owner's manual or a Haynes/Chilton manual for a reference to that combination of lights?
 

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on my 2012 Camry, those 2 stability lights come on together as a code for other problems. Most recently I had a gas cap that was not registering as fully closed. Once I replaced the cap with one not stripped, those 2 lights went away and have not returned. Had it before that as well with something cat related just don't remember. It's weird.
 

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on my 2012 Camry, those 2 stability lights come on together as a code for other problems. Most recently I had a gas cap that was not registering as fully closed. Once I replaced the cap with one not stripped, those 2 lights went away and have not returned. Had it before that as well with something cat related just don't remember. It's weird.
That's kind of ... dumb? There's a CEL in pretty much every OBD-II car, and an OBD-II interface with readable fault codes. What genius decides it'd be a great idea to set two traction control lights to indicate a gas cap problem? They're not even remotely related.

Just set a relevant fault code, which turns on the CEL. This isn't rocket science, Toyota.
 

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That's kind of ... dumb? There's a CEL in pretty much every OBD-II car, and an OBD-II interface with readable fault codes. What genius decides it'd be a great idea to set two traction control lights to indicate a gas cap problem? They're not even remotely related.

Just set a relevant fault code, which turns on the CEL. This isn't rocket science, Toyota.




I thought it odd as well but each time the tech has been able to "read" the code and immediately know what the problem is and once fixed, the 2 lights never come back. Each problem was like 2 years apart too so I know the appearance of the indicators is unrelated to previous.
 

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Oh, forget to mention, the ABS works just fine
If the ABS is working, then your wheel speed sensors are fine.

I don't know these for sure exist in our cars, but could there be an issue with stability control accelerometers (sensors) or related components? The combination of the lights suggests there's an issue with the DSC system - first the DSC light is always on (in this case, that's a fault/warning light), and the other light telling you the system is disabled.

Have you checked the manual for a DSC-specific fuse?
 

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There will be steering angle sensors and other sensors outside the ABS for DSC on these cars. You need a dealer level scan tool to get in there and tell you what's going on.
 

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Thank you for the replies. I have realized that I can reset the warning lights with full clockwise + full anticlockwise in the steering wheel. But after 10 miles driving I get the warning lights back on, there must be some electronic fault as you guys mentioned.

I am going to study buying a dealer level scan tools and see what I discover. VCMII seems to be where I need to start
 

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Thank you for the replies. I have realized that I can reset the warning lights with full clockwise + full anticlockwise in the steering wheel. But after 10 miles driving I get the warning lights back on, there must be some electronic fault as you guys mentioned.

I am going to study buying a dealer level scan tools and see what I discover. VCMII seems to be where I need to start
There's an app, ForScan, available for multiple platforms, which will read the other (non-OBD) codes our cars throw using a standard ELM bluetooth reader. I used it to find that my rear right wheel speed sensor wasn't connected properly when I got a similar issue (though my ABS doesn't work either). But yeah, there are separate systems that don't get reported to OBD
 

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Hi, my 09 Mazda 6 with 110k miles has the DSCoff light on. No codes stored in ECU. I have being driving for around 1k miles with this problem and I have noticed that once the light when off for like 30 miles. That only happened once, it has being on permanently ever since.

Any idea what could the problem be? Thank you
My family just bought a Mazda 6 2009 with 170k miles. Driving well for two weeks, and the same lights came on. I took to an auto check at Firestone and there was a leak on the transmission lines which we repaired. Now we are driving and sometimes the same two lights come on, but while driving the car shuts off. I am wonder what that can be and how to fix it. Any thoughts?
 
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