Wednesday, May 25, 2022
News Software Issue Said to be Cause of Some Ford Mustang Mach-E Needing...

Software Issue Said to be Cause of Some Ford Mustang Mach-E Needing Jump Start

Modern tech, old problems

  • Low voltage in the 12V battery means the electric car won’t go

  • Software fix available at dealers, OTA coming


Owners of the first Ford Mustang Mach-E EVs could run into a problem with starting their vehicles, says a new report. The issue is said to come not from the full-size battery back, but from the 12-volt old-school battery that is still found in every EV running the parts that the high-voltage system can’t.

The problem, says The Verge, is in how the 12V battery is being charged from the larger pack. Because using conventional 12V systems for things like lighting, radios, and other smaller electrical features is easier and cheaper than designing all-new, EVs have a 12V system that is charged up as needed from the main battery pack to run those systems.

According to multiple owner reports, the report says, when drivers have their vehicles plugged in to charge the main pack, the 12V battery stops charging. So owners using the 12V accessories, especially in cold weather areas, can see the 12V battery drop to a voltage too low to run the vehicle. When this happens, the EV won’t “start” and can’t be driven.

Ford acknowledged the issue in a Technical Service Bulletin filed with the NHTSA, saying that “some 2021 Mustang Mach-E vehicles built on or before 3-Feb-2021 may exhibit the 12-volt battery becoming discharged while the vehicle is plugged in during the high voltage charging process.” The fix is a reprogramming of certain modules involved in the process and charging the 12V battery from an external source to get the vehicle running again.

At this time, The Verge said, Ford says the fix will require a dealer trip, but that an OTA fix is coming. Another short-term solution for drivers who find themselves stranded (aside from Ford roadside assistance) is to jump the 12V battery. A process that requires the front trunk to be boosted, then a panel removed to access the 12V battery.

 

Trending Now

General Motors Could Add a Second Charging Port to Some of its EVs

Patent images show a pickup with two charging ports next to one another Since GM separated its 800 Volt battery into two 400...

Stellantis will be Fined $300 Million Over Polluting Diesel Engines

This is part of the same diesel scandal Volkswagen was caught up in back in late 2015 The EcoDiesel engine used in the...

Mercedes-Benz Teased the 2023 EQE SUV

The electric SUV will be launched later in the year and AMG versions are likely to follow early in 2023 This SUV will...

The Toyota Sienna Turns 25 and Gets a Limited-Availability Anniversary Edition

The Sienna took over from the Previa in 1998. Nearly 300,000 have been sold in Canada since. The current 4th generation launched for...

New Genesis GV60 Priced from $71,000 in Canada

Two versions will be offered: Advanced and Performance. This is Genesis’ first full EV. The next EV from Genesis will be the G80...

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.