Ford Mustang Mach-E. Next, the electrician sucks the 12 V battery and turns into a "deep sleep"

The Ford Mustang Mach-E, like all other electrics, charges a 12V battery from the main battery using an inverter. In theory, everything is fine, in practice something did not work out: Mach-E probably stops the charging process when the machine is plugged into an outlet. That could end up with a full battery and ... a dead car.

Ford Mustang Mach-E and childhood illnesses

It might seem that since an electric vehicle has a giant battery in its chassis, it shouldn't have any problems with powering the on-board electronics. But it works a little differently: most systems are powered by a 12-volt battery, which is charged by the main battery in the background. The problem is that the electronics that control the recharge process are also powered by a 12V battery, so if it discharges too much, the process will not start.

As a result, we can have a full traction battery (the one in the floor) and a car that does not respond to the key, does not start, or reports various strange errors, because the 12V battery does not provide enough voltage.

Ford Mustang Mach-E is another electrician who may have such a breakdown... As noted by some of his buyers, quoted by The Verge, the problem occurs at the weirdest moment: when the machine is plugged in and charging. The manufacturer itself encourages replenishment of energy reserves, especially in cold climates - and it seems that the manufacturer "forgot" to activate the inverter, which then charges the 12 V battery.

Ford Mustang Mach-E. The car battery is located under the front hood, near the left wheel arch (c) Town and Country TV / YouTube

And when the 12-volt battery is discharged, the Mach-E goes into "deep sleep" mode, according to the FordPass mobile app. It looks like the car can only be woken up when the 12-volt battery returns to the living world. The manufacturer is aware of the problem, claims the error is in the transmission controller software and only applies to models manufactured before February 3, 2021..

While in theory the Mustang Mach-E should allow online software updates, in this case ... yes, you guessed it: it is necessary to return the car to the dealer and "connect to a computer" to download the patch. It will be available online "this year, only later."

The Ford Mustang 12 volt electric battery is located in the front, behind the luggage compartment. The problem is that the bolt is electrically unlocked, so we won't open it when the battery is low. Fortunately, the wires for powering the unit (and unlocking the bolt) are available under the hatch on the front fender:

Ford Mustang Mach-E. Then the electrician sucks in a 12 V battery and turns into a "deep sleep"