Nissan Repair Questions? Ask a Mechanic for Answers ASAP
On one hand, this transmission has a fairly good fluid fail-safe mode. What that means is that it will keep from engaging the internal clutches if the fluid gets low enough to where the clutches would be damaged if they did engage.
On the other hand, there is no way of telling if the transmission did get heated up enough from the low fluid condition to damage anything. A fluid replacement wouldn't really help much if damage was already done.
I think your only option is to get it in writing that the dealer will take full responsibility if you run into problems because of their negligence which caused the transmission leak. Or they could give you a loaner vehicle to drive while they thoroughly test your car.
You will most likely not have any problems, but then again you don't want to find out the hard way.
No, you are right, there is no pan to pull and heck for metal on this transmission. There is a drain plug, but I doubt you would see much metal there if it was present.
The only way that the line popping off because of pressure theory could happen is if there was a fluid restriction in the system which caused the old transmission to go out. It's much more likely that the repair tech just didn't tighten the fluid lines enough before releasing it to you.
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