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Thread: How to reset the i-stop system (eg after battery replacement)

  1. #1
    Registered Member Moonlighter's Avatar

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    How to reset the i-stop system (eg after battery replacement)

    On CX5s and other Mazda's with the i-stop system, i-stop may not activate after the battery has been replaced or was disconnected during some servicing.

    In this case you will either need to ask your dealer to reset it, which they can by connecting up to the diagnostic system, or you can do it yourself.

    I found some instructions for a MZR 2.0, but it worked very similarly, as below, on my CX5 2.2 diesel.

    1. Warm up the engine. Turn everything electrical off that you can - radio, A/C etc so there is no/minimal electrical load.
    2. Switch the ignition off.
    3. Switch ignition to on but dont start engine. Long-press the i-stop OFF switch for 3 s within 5 s after switching the ignition ON.
    4. Start the engine.
    5. Press the i-stop OFF switch. Verify that the i-stop indicator light (green) flashes and stays flashing. If it does not flash, go back to Step 3.
    6. Allow the engine to idle for 10 minutes, or until the i-stop indicator light (green) turns off. Mine didnt stop flashing so after 10 minutes or so i just went to step 7.
    7. Switch the engine off. Wait a minute or two.
    8. Start the engine. Go for a drive, and check that the i-stop system operates normally. Those with i-stop will know that you may need to drive a mile or two until it activates. Remember that i-stop will not operate when (a) diesel engines are in regen mode, and (b) in some other conditions - see your manual for details. Also, if a new battery was fitted, it may take some time for the new battery to fully charge up before i-stop will start working. Go for a decent drive so it gets fully charged.
    9. If i-stop operates as normal, you have successfully reset it.

    Cheers!

  2. #2
    Registered Member yrwei52's Avatar
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    Arrow How to reset the i-stop system (eg after battery replacement)

    Thank you for the write-up! We don't get excellent and unique i-stop here in the US and we can only hope someday we'll need your write-up when Mazda North American Operations decide to add this feature for us under the competition as Honda has put Idle Stop system into Pilot for US customers.

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    Just curious as I'm just about to replace my battery.......If I DON'T do the above reset will that mean the annoying istop will be permantly switched off? 😉🤔

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    Just replaced my battery and weird thing is I didn't have to reset, istop magically working normal again after 2 hrs drive.
    By the way my battery was completely dead couldn't lock the car with the remote.

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    Quote Originally Posted by Driver 1 View Post
    Just replaced my battery and weird thing is I didn't have to reset, istop magically working normal again after 2 hrs drive.
    By the way my battery was completely dead couldn't lock the car with the remote.
    You have a US spec car with I-stop?

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    Quote Originally Posted by paris1 View Post
    You have a US spec car with I-stop?
    Im not from the states. It's a philippines spec cx-5

  7. #7
    Registered Member Moonlighter's Avatar

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    As per my original post, iStop MAY not reset itself after a battery replacement.

    It may also reset itself, as yours obviously has. Lucky you!

    I guess you fooled us, since your location says USA.

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    Quote Originally Posted by Moonlighter View Post
    As per my original post, iStop MAY not reset itself after a battery replacement.

    It may also reset itself, as yours obviously has. Lucky you!

    I guess you fooled us, since your location says USA.
    Sorry will try to change it now.

  9. #9
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    Quote Originally Posted by Driver 1 View Post
    Sorry will try to change it now.
    did you replace your battery with ORIGINAL battery type or after market? dealer said aftermarket batteries wont work..

  10. #10
    Structural Member shadonoz's Avatar
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    Quote Originally Posted by podi View Post
    dealer said aftermarket batteries wont work..
    Did he say WHY they won't work? (eyeballs) [need a good laugh] (hah)

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    Quote Originally Posted by podi View Post
    did you replace your battery with ORIGINAL battery type or after market? dealer said aftermarket batteries wont work..
    replaced it with optima yellow top.

    you could use ordinary maintenance free or even low maintenance automotive battery but from what i've read it would not survive that long because of the killer start/ stop feature.

    the EFB battery that came with the car didn't last 2 years. trying this AGM battery see how it would last

  12. #12
    Registered Member Moonlighter's Avatar

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    Quote Originally Posted by Driver 1 View Post

    you could use ordinary maintenance free or even low maintenance automotive battery but from what i've read it would not survive that long because of the killer start/ stop feature.
    Do you know how the “killer” Mazda iStop system works?

  13. #13
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    Quote Originally Posted by Moonlighter View Post
    Do you know how the “killer” Mazda iStop system works?
    yes, "why" "you" "ask"?

  14. #14
    Registered Member Moonlighter's Avatar

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    Why do you call Mazda iStop “killer”?

  15. #15
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    that's what i've read in articles and discussion on the net.

    Do try a ordinary maintenance free battery on your mazda with istop and tell us how it holds up
    Last edited by Driver 1; 01-06-2018 at 09:17 AM.

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