An erroneous manual gearbox can lead to traction control, loss of safety

Ford has just begun a recall that affects owners of the 2019-2020 Ford Mustangs, equipped with a 5.0-liter V8 and a manual transmission.

In all, the automaker will have to recall 25,032 vehicles manufactured between January 18, 2018 and December 16, 2020, due to a transmission error when Ford introduced new rev-matching software in 2019.

It has since been discovered that in some driving situations, “clutter slips due to incorrect ratios, including increased reverse driving and customer changes due to incorrect calibration of odd / even shift gates,” confusion between gear position sensors and approximate gear calculations. According to the NHTSA, the Powertrain Control Module (PCM) may signal a decline. Such degradation of the signal would then be interpreted by PCM as an error.

Read more: Stick-shift hurray! Ford’s 2024 Mustang teaser confirms manual gearbox for next generation

This, in turn, can cause all sorts of problems for the Mustang. If an error signal is detected by modules controlling the backup camera, reverse lamp, or driver assistance features, PCM may disable those features.

This means that not only the camera and backup lights can stop working, but also front collision alerts, blind-spot alerts, cross-traffic alerts and even traction controls.

Failure to operate any of these systems may increase the risk of crashes. To solve this problem, Ford technicians simply update the PCM software. To complete that update, customers need to bring their car to the dealership, which is normally free.

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