battery discharging - Page 5 - Ford B-Max Forum
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post #41 of 44 (permalink) Old 4th October 2019, 19:56
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Have had a 2014 B-max for 1 year and battery discharged 2 nights ago. Started by AA easily and no problem since.
Reading your posts on Bluetooth I remembered signing a DPD driver's device right next to the car the afternoon before! Coincidence or what?!
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post #42 of 44 (permalink) Old 4th March 2020, 00:42
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Apparently, battery drain-down has been found to be caused by moisture ingress to rear parking sensors.
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post #43 of 44 (permalink) Old 5th March 2020, 17:33
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Location: Northumberland
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Car Mechanics Magazine January 2020 =
Ford B Max battery drain - Bluetooth connection is seen as the most likely culprit (Check sync settings and possibly replace the module)

2015 B Max Eco Boost Zetec 125 Tectonic Silver
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post #44 of 44 (permalink) Old 6th March 2020, 10:38
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It seems odd to me that something that is not switched on can drain a battery,especially an item that draws so little current.I have bluetooth turned on in my B-max and have had no problems at all.
In fact i have two dash cams wired to the cigarette lighter socket in the rear of the centre console which i forgot to unplug last Friday after getting home from work, the car was not used at all until Monday and it started fine.The cams had been running the entire 60+ hours recording very little, this must have used more power than the bluetooth does !

In my opinion Ford are clutching at straws when they blame the bluetooth module for battery drain, especially as it's not even turned on when the ignition is off,try connecting without turning the ignition or radio on, you cannot !

1 litre Zetec Turbo petrol 74Kw / 100 Ps
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