What does 'Ford 4WD overheating temporarily invalid' mean?

1 Answers
OAddyson
07/29/25 5:47pm
When a Ford vehicle displays '4WD overheating temporarily invalid', it indicates an overheating alarm in the electronic coupler of the four-wheel drive transmission, which triggers this warning on the dashboard. Generally, the vehicle's computer is programmed to cut off power to the electronic coupler in such cases. Here are some relevant details: 1. Components of the electronic coupler: The electronic coupler can form switching circuits, logic circuits, and high-voltage voltage regulator circuits, making it a crucial part of automotive circuitry. 2. What the electronic coupler includes: The electronic coupler mainly consists of directional couplers, power dividers, and various microwave branch devices, comprising two parts - a free light source and a photoreceiver.
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