Buy new hybrid battery?

It was 3 years IF they installed it, which was about $500 USD extra IIRC, something to consider. A lot less hassle for you, no core charge involved, and no finger pointing if there’s any issues. Something to consider.

How has it “died” BTW; poor performance, warning lights, codes?

Two more biggies:

1. Head gasket failure. Has the EGR system including intake manifold (with its EGR passages) ever been cleaned? If not, you’re almost certainly going to have problems, soon. DIY cleaning is absolutely preferable to dealership on this; they are clueless and will only replace part$. There are a few savvy independent garages that’ll do a thorough job for $500~700 USD, but they’re few and far apart.

And, 160k miles is late in the day: EGR cleaning is always good, but head gasket may already be compromised.

2. Brake components, two of them, mounted on the rear wall of the engine bay: one or both of them can fail, and you’re looking at $2~3k USD, for dealership fix.

And one not so big but overdue issue: the “water pump” (engine coolant pump) is failure prone, and best replaced before your miles. I would do the nearby thermostat too.

 

while the new oem battery may only have a 1 or 3 year warranty, 99.99999% of them make at least 10 years without fault.
it's hit or miss with 2010. saome have major problems, others don't. we don't know why, or what percentage do have problems, but naturally, we see a lot here. all the egr circuits clog eventually.

 

+/- $2000 is a LOT less than a new car.
I have over 334,000 on my 2010 and I just put a new hybrid battery in a week ago.
Engine and brake master cylinder and booster original.... All still going strong.

Even a new engine is +/- $2000, brake stuff +/- $1500, ALL less than half the cost of
a new car....

 

Head gasket replacement costs are all over the map. The cheapest are more likely to cut corners, reuse head bolts that may have stretched beyond spec, skip checks of head and block flatness, and so on. $2~3k USD? For a decent job.

my unproven theory is that clogged EGR is what’s causing head gasket failures, food for thought. One way or another I would get it cleaned, including the intake manifold, which has EGR passages.

 

Great streak! Have the brake fluid been swap with new fluid? I’m packin the miles also and haven’t done that myself.

 

Yes on the brake fluid. Done all the maintainence.
I've replaced the front and rear hubs a couple of time.
I did the trq hubs, that USED to be good hubs, they are NOT any longer.
I have tmk on the rear and moog on the front.