While there might be *very* rare exceptions (like a weirdly designed spare tire carrier), generally speaking, you *need* a way to lift the vehicle to get access to the spare. Consider these alternatives if you lack a jack rod:
* A different type of jack: Most vehicles are designed to be lifted with floor jacks, scissor jacks, or even a sturdy piece of lumber and a strong, safe base (though this is less recommended and riskier).
* Roadside assistance: Call a roadside assistance service; this is the safest and easiest option.
* Help from a friend/mechanic: Someone with tools and knowledge can assist.
Trying to force the spare tire loose without proper lifting is extremely unwise and will likely damage your vehicle. Safety should always be the priority.