told by dealership that replacement would be covered under warranty (...) However after they replaced it

Make them accept their fail, after all, you accepted the repair only because they have lied.

Also, read the fine print of your "warranty" - maybe it is covered and they're lying.

Can a Camry hybrid work if the hybrid battery is removed ?

what a bunch of thugs. I would be thinking about getting a lawyer involved.

TMK, no it won’t work. If it were an older generation HONDA hybrid, it would totally work without the hybrid battery, because it has a separate backup starter. But TOYOTA’s system is different, because the hybrid electric motor also acts as the starter. There is no backup starter in a Toyota.

How many miles do you have on it?

“Hybrid-Related Component Coverage: Hybrid-related components, including the hybrid battery, battery control module, hybrid control module and inverter with converter, are covered for 8 years/100,000 miles. The hybrid battery may have longer coverage under the Emissions Coverage. Refer to your Owner’s Warranty Informationbooklet for details. Starting with the 2020 model year, every hybrid battery warranty is being increased from 8 years or 100,000 miles, to 10 years from date of first use, or 150,000 miles whichever comes first.”

1) Double check your state laws some states are a little more strict on the warranty. (Maybe see if you take it to a state with more strict laws to have the battery replaced?)

2) Have them take it out, with the STIPULATION that you get your old battery pack back. Those things, even if they don’t work, are worth gold. Old battery packs can potentially be refurbished. If they can’t give it back to you, DEMAND a core charge instead, exactly what the dealership would charge you for a core. (Find out the core charge from the parts department first, or from another dealership, so they don’t try to low ball you.)

3) a. If you have the know how and handiness, refurbish the battery yourself. There are tons of videos on the internet how. TBH, it is a little cumbersome, time consuming, and potentially dangerous some you are dealing with electricity.  Always practice safety first.

b. If refurbishing it yourself is not an option, I highly recommend GreenBean Battery, and spend on the extra few bucks on the unlimited warranty. That’s what I used when my battery went kaput on my Prius.  They provide parts and labor for the price quoted on their website: https://greenbeanbattery.com

c. At first, I was skeptical of a refurbished battery. But after understanding how the battery is put together, the modules, the cells, it seems it is the middle modules that eventually lose their voltage and start leaking. Most likely due to heat. The outer modules appear to hold their voltage better. Refurbishing and rebalancing the battery, exchanges the bad modules for other good modules from other battery packs, orders them in the most efficient way. That’s why GreenBean wants your old battery pack, because it scavenges and refurbished the parts for its next customer. 

In the internal combustion engine world, you hear of engine rebuilders with good reputations, and some not so great. Same is true for battery rebuilders. And from a few friends and myself, we’ve been happy (so far) with their product, service, and relative price point.

Posted by: @oaj191

pay 5000 dollars

on the other hand, that's not a bad price for a brand new battery, especially if they have it on hand.

Update : car dealership finally heard back From Toyota And didn’t charge me for anything ! Glad This ordeal is over .