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Ford Focus MK4.5 2022+ issues thread

Chera
Chera
in Ford Focus Club

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4 minutes ago, SC38 said:

Garage says charge at 58% is acceptable.

No, that is too low.

4 minutes ago, SC38 said:

Car got run on 8 hr journey last week, so surely it should be more than that. It’s run regularly.

Modern "Smart" charging systems, which are actually very "Dumb" means that the battery gets very little charge when the car is on a steady long drive. The real meaningful charge to the battery only occurs when the engine is slowing down, (engine over run) and then the alternator will provide a good charge as the system uses the loading of the alternator to increase engine braking.

You need to accept that you will have to use a smart battery charger about every 5 to 6 weeks (depending on your driving type) in order to maintain a good 'State Of Charge'. It is very sadly what they call progress.

Ford - Battery SOC & Text.JPG

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    • unofix
      unofix

      The Keyless entry gets disabled on the passenger door(s) once the State Of Charge reaches or falls below 55% When the battery SOC recovers then the keyless entry automatically gets restored to th

    • unofix
      unofix

      Looks like Dendritic growth to me. This is a naturally occurring phenomenon common to alloys such as aluminum. It is totally harmless and once the entire surface is covered in the greyish white powder

    • alexp999
      alexp999

      I feel like this should just be your signature at this point. 😆

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    4 hours ago, SC38 said:

    22 focus active mhev 

    Has anyone else had a problem with battery charge? Garage says charge at 58% is acceptable. Car got run on 8 hr journey last week, so surely it should be more than that. It’s run regularly. Things started not working , aircon shut off , radio, demisters not working.Has anyone else had this problem?

     

     

    If aricon stopped working I am afraid the car has estimated the 12V battery to be below 50%. Unfortunatelly, the car controls its consumers based on this estimation and not the one from the garage.

    As suggested, it might be good to hook it up to a smart charger and top up the battery. Of course the smart charge system will then start discharging it because.... well because it is smart 😞

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    • Author
    On 6/6/2024 at 11:14 AM, SC38 said:

    22 focus active mhev 

    Has anyone else had a problem with battery charge? Garage says charge at 58% is acceptable. Car got run on 8 hr journey last week, so surely it should be more than that. It’s run regularly. Things started not working , aircon shut off , radio, demisters not working.Has anyone else had this problem?

     

     

    Yes, they replaced it under warranty after a few tests and now it seems to be fine, even if I let my car away for 3 weeks 🙂

     I would suggest you to try to go at another garage and have this replaced under the warranty. 

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