How do I reset my 2012 Ford Focus BMS?

Posted on by Mary Andersen

How do I reset my 2012 Ford Focus BMS?

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  1. Ignition on (engine off), headlight flashers 5 times, then brake pedal 3 times. Battery indicator lamp will flash meaning success.
  2. Ignition on (engine off), fog light button 10 times, then hazard button 10 times.
  3. Ignition on (engine off), lights on, fog light button 5 times, then hazard 3 times.

Do you have to reset BMS?

Hold the wires just as they are for 15 seconds, and that should cause the BMS to reset itself. Once that’s done, turn off the battery charger and remove the adapter. You can now check to see if the BMS allows the battery to charge and discharge as normal.

How do I reset my focus St BMS?

BMS Reset Process for US 2015 Ford Focus ST:

  1. Acc ON / Engine OFF (Press Start Button w/ Key in Pocket)
  2. Headlight Switch to ON (Not Auto)
  3. Flash High Beams 5x (pull back on the left steering wheel stock)
  4. Push the brake pedal 3x (press to the floor and fully release)
  5. Watch the battery light on the dash.

How do I bypass BMS discharge?

You can bypass discharge and use the BMS for charging only. This way your BMS doesn’t need such high current protection as charging is done with a smaller current. If you wire your BMS so it is only in use when charging your e-board, and gets bypassed when the batteries are being discharged, you can get away with this.

How do I reset my BMS battery?

How do I reset my Ford Focus ST?

Fully press the accelerator and brake pedals at the same time. Keep the accelerator and brake pedals fully pressed. After three seconds, a message displays confirming the reset procedure is in progress. After 25 seconds, a message displays confirming the reset procedure is complete.

How do I wake up my BMS?

BMS should wake up with a load on the battery or a charge on the battery. There are also a couple pins on the BMS you can short to wake it up as well.

How do you turn off the check engine light on a Ford Focus?

An even simpler way to clear the engine management light is to turn the ignition on and off. This approach achieves the same outcome as the previous step, but without disconnecting the battery. Turn the ignition on and off three times, pausing a second between each cycle. The engine management light should go off.

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