Friday, October 22, 2021
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

Porsche Sold More of the Taycan Than the 911 Between January and September

28,640 Taycans were sold, compared to 27,972 911s Global deliveries are up by 13 percent over 2020 The Cayenne is still the most...

The 2022 Honda Passport will Compete in Rally Racing Events in the United States

The rally version will be a lightly modified road going model It will compete in events held by the American Rally Association Honda wants...

Most Popular Cars in the United States, Third Quarter of 2021

The Toyota Camry is tops among the most popular cars in the U.S. after the third quarter of 2021. Hyundai Sonata and Kia...

Most Popular SUVs and Trucks in the United States, Third Quarter of 2021

The Ford F-Series tops among the most popular SUVs and trucks in the United States. Jeep Grand Cherokee and Toyota Highlander back in...

Chevrolet Reveals 10-litre 1,004Hp Naturally-Aspirated V8 Engine

This mill is not street-legal. It’s meant for drag racing. Total output 1,004 horsepower and 876 lb.-ft. of torque. We’ve said this before and...

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.