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Discussion Starter #1 (Edited)
I bought a new original Ford battery 60AH 590 CCA. I do not have forscan and want to reset BMS with the manual procedure.
The problem is that i found 4 different procedures from all over the world. And i wonder why? Is it because of different production countrys. Is it because of procedures that is wrong? I live in Norway and my focus is Saarlouis plant buildt (Europe).
So i ask which procedure worked for you that have done it and which country do you live in?
Also did anyone of you check with forscan that "Battery days in service was reset to zero"?

This procedure was posted by Bud Bundy from Germany.
For a reset of the BMS:
1. Switch on ignition (do not start engine)
2. Switch on dipped beam
3. Press 5x the rear fog light button (do not switch 5x on and off the rear fog light)
4. Press 3x hazard lights button (do not switch 3x on and off hazard lights)
5. Then the battery symbol in the speedometer should flash 3x quickly.
If it does not flash immediately, wait 20 seconds.

So all the procedures i found is very similar to Bud Bundys exept for point 3 and 4. So here are the other procedures and i only write down what is different from Bud Bundys procedure.

(Procedure from china. After pressing buttons you have to turn ignition off and on for battery symbol to blink).
3. Press 10x the rear fog light button
4. Press 10x hazard lights button

3. Press 10x the rear fog light button
4. Press 6x hazard lights button

3. Press 12x the rear fog light button
4. Press 6x hazard lights button
 

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In the US, there are no rear fog lights.

When I replaced my battery, I reset the BMS using a scan tool (not Forscan).

This is from the 2013 Focus workshop manual:

- If installing a new battery, use the scan tool to carry out the Battery Monitoring System (BMS) reset after the
battery is connected.
 

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Did you use IDS scan tool at a Ford workshop? In Norway they charge 125 $ to do that.
No, it was just a scan tool that my Uncle has. Do you have an OBDII scan, or cable that can connect to a laptop? If so, here is the procedure:
 

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Discussion Starter #5
I read that a BMS reset only resets the battery aging data. To reset SOC (state of charge) you have to do a "power on reset" by disconnecting the BMS sensor plug.

On Volvo you do it this way:
SOC Power on reset.
1. Turn the ignition on.
2. Disconnect the BMS sensor plug for 10 seconds and then reconnect.
3. Turn the ignition off.

Is it the same on the focus?

And in what order should you do this?
Is it the BMS reset first and then the SOC power on reset?
 

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Discussion Starter #6 (Edited)
I found the next three posts from a russian site (translated).

To reset the BMS. The new battery should be with similar parameters, this is important.

Cars with rear fog light button
1. Get in the car and complete steps 2–4 within 10 seconds.

2. The ignition switch is in the ON position, the engine is off (position II).

3. Press and release the rear fog lamp switch five times.

4. Press and release the alarm switch three times.

5. If correctly executed, the control lamp of the charging system on the instrument panel flashes three times within the next 15 seconds.

6. BMS reset completed.
 

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Discussion Starter #7
Cars WITHOUT rear fog light button

1. Get in the car and complete steps 2–4 within 10 seconds.

2. The ignition switch is in the ON position, the engine is off (position II).

3. Pull and release the high beam switch five times.

4. Press and release a brake pedal three times.

5. If correctly executed, the control lamp of the charging system on the instrument panel flashes three times within the next 15 seconds.

6. BMS reset completed.
 

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Discussion Starter #8
1. Pressing the buttons works like this: each press or release is counted separately.
Those. turn on ZPTF, turn off ZPTF, turn on ZPTF, turn off ZPTF, turn on ZPTF = 5 times
Similarly with emergency. after the 3rd "press" it should remain on - this is normal.
2. after completing 1-4, WAIT. Do not press anything and look at the battery lamp. It should blink 3 times after 10-15 seconds from the moment of completion of 1-4, and NOT immediately after them.
3. The reset procedure should be performed exclusively when replacing the battery. In case of temporary shutdown without replacement - it is not executed. As part of the reset, the battery age parameter is cleared. The remaining parameters are automatically calibrated during operation and are not reset during this procedure (they are reset when the battery is turned off, then they are restored). The age of the battery when disconnected from the network is NOT reset. It is for its reset that the procedure above is used.
4. when replacing an OD, they can perform a reset via IDS, and not according to the procedure above.
 

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Cars WITHOUT rear fog light button

1. Get in the car and complete steps 2–4 within 10 seconds.

2. The ignition switch is in the ON position, the engine is off (position II).

3. Pull and release the high beam switch five times.

4. Press and release a brake pedal three times.

5. If correctly executed, the control lamp of the charging system on the instrument panel flashes three times within the next 15 seconds.

6. BMS reset completed.
just tried this in my 2012 focus se did not work
 

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Discussion Starter #10
Maybe you have to turn on dipped beams? In the other procedure with the rear foglight button you have to turn on dipped beams.
 

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Discussion Starter #14
This could be missunderstood so i will try to explain.

Pull and release the high beam switch five times.
1. High beams on
2. High beams off
3. High beams on
4. High beams off
5. High beams on

After doing this, you must end up with the high beams on.

Press and release a brake pedal three times.
1. Press brake pedal
2. Release brake pedal
3. Press brake pedal

After doing this, you must end up with the brake pedal pressed and the brake lights on.
 

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Discussion Starter #15
The first procedure in the tread from Bud Bundy worked!

I got the battery light symbol to flash 3 times after 12 seconds.
 
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