How to reset ECU?

[woot woot]

Hey guys been noticing i have getting some poor economy with my car. Was wondering if there was a way to reset the ecu. I have a obd2 scanner and the Andriod app Torque to clear error codes and stuff. I don't believe that disconnecting the battery will do anything, but let me know if there is a way.


Cheers
Jo

 

[rsvinylgraphics]

How to reset your ECU

1. Disconnect the negative terminal on the car battery
2. Pump the brake pedal several times (7-8 times) to discharge any left over current (or alternatively you can wait a few hours, your pick)
3. Reconnect battery
4. Congratulations, you have just reset the ECU, but now you have to reset a few other things

 

[woot woot]

Thanks. what else will reset? The stereo which will require a security code from mazda i presume?

 

[zps2004]

Resetting the ECU won't fix poor fuel economy. It will eventually just get back to where it was. Can you actually read your fuel trims with that app?

 

[cosh68]

Yep, full set of mode 1 PID's area available as standard & you can write you own if you know the address or PID you want....


Shaun....

 

[ScorpioGTX1]

Thanks. what else will reset? The stereo which will require a security code from mazda i presume?

The stereo will forget its programmed radio stations and settings (treble, bass, etc.) but that's it. Any speed or mpg averages on your cluster display will also be reset.