ELI5, during winters and colder seasons you’re told not to use the handbrake of it possibly freezing. Why wouldn’t a gear in a gearbox freeze as well?
In: 40
Steel brake discs are also susceptible to rust, so if the car has been driven on salted roads, and is parked outside where it rains, and is not used for a while with the handbrake on, the discs can rust onto (“around the outer edge”) of the pads. Normally this is quite easy to break (tho you’ll hear the rust grinding for the first mile or two) but if the wet rust also provides more volume for ice to form then you can have doubly-stuck brakes.
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