How do i get rid of the bad smell coming out of the battery vent of my toyota prius 2010?

Could be suspension or steering system issues.

i have a 2010 Prius that we bought new. It has had no problems, but I can tell you from my study of the Prius that pretty much nothing is simple. The easiest way to reset stuff is to disconnect the a start battery connection. You can look on the net how to start a Prius with jumper cables to the engine compartment, and disconnect the start battery there. If you are not comfortable with that, the start battery is in the rear near the spare tire. Disconnect the negative cable only, wait 15 minutes and reconnect. You may have to reprogram your radio push buttons, but so what. If this doesn't work, take it to a shop (maybe toyota dealership) that can read and interpret the trouble codes for a 2010 Prius. Enjoy the car, we do.

I’m happy to assist further over the phone at https://www.6ya.com/expert/bill_f6ca18ca1db028ed

car needs to be plugged into a diagnostic machine to see where is the fault

How to Jump Start Toyota Prius

here are the instructions

Sounds like your 12 volt battery is weak (strong enough to start but not enough to maintain). Of the Prius' 2 batteries, this one is by far the easiest and cheapest to replace (~$100 vs the ~$4700 Hybrid battery). I'd recommend taking the car to a shop and having the battery checked out. *Impotrant* Be sure to ask for a 'load test' instead of a simple voltage check. This should be a quick and free test from any auto parts store.

Remove the AC/heater blower motor and clean out the mouse nest or leaves you will find in the housing.

as far as I know it takes R134 like everything else
should be a sticker under the hood with the amount

Have both your battery and alternator inspected. Turn it on, disconnect your negative battery cable, if it dies, you need an alternator, if not, then you may want to test your battery for bad cells.

There's a known problem with the early Toyota Prius (2001 - 2003), when running the engine for a long period of time without moving or when the car is driven only for short trips (short city driving), the Prius might not start.

You have to change the original battery with a 356 CCA which is bigger because the battery is bigger you also have to change what is holding it into place.