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

[Clueless12]

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!

Worth noting that (in Australia at least) seatbelt must be fastened for this reset to work

 

[Lesha0107]

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!

Good afternoon, I tried to initialize the i-stop system on a 2020 Mazda CX-5KF after replacing the battery, according to the instructions in the attachment, but the indicator, instead of lighting up or blinking green or yellow, simply went out, but after several trips, the i-stop started working.

I am not sure that the i-stop system correctly recognized the electrical loads with a 61 Ah battery and a starting current of CCA570A. When the engine was running, the charging voltage without a load became 14.3 volts, and with all electrical consumers turned on it was 13.7-13.9 volts.

 

[Lesha0107]

As I understand it, the initialization of the i-stop system is necessary so that the electronic control unit of the PCM can correctly evaluate and calibrate the electrical load of the charge and discharge of the new battery.

 

[200955]

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!

This may sound a bit strange but when I anticipate a module to misbehave after replacing the battery, I attach my small charge keeper to the terminals on the cables before removing them. I really only have to use the (+) side and connect the other clamp to a body ground. I like your solution, it's reminiscent of the putting the car in service mode without a scanner. Now if someone could tell me just exactly the sequence used when changing a body control module or if there actually is one.

 

[Lesha0107]

Maybe it's not a bad solution, if only to charge the battery. And if you change the battery, I think that in any case you need to reset the number of days and i-stop cycles in the PCU unit.
I did it like this:
1. Closed all the doors.
2. Turned on the ignition.
3. Deleted the message by pressing the INFO button.
4. Moved the automatic transmission handle to the neutral position.
5. While holding the brake pedal, press the accelerator pedal and hold for 10 seconds, the battery fault indicator will start flashing, then press the accelerator pedal 3 times, the battery fault indicator should go out.
6. Turn off the ignition.
I assume that if this procedure is not carried out, then after some time a message about replacing or malfunctioning of the battery will appear.