Sunguresat

Hi all,

I want to buy gs450h 2008, but I am scared of it's age, hence asking for more opinions.

Here's the deal:

1. gs450h 2008
2. price is not set, but I assume 10-15k
3. 180k milage
4. 2nd owned, I will be the third
5. no crashes, to my knowledge
6. maintained in a local lexus dealership with a history book
7. the guy is changing the shock absorbers this month, costs him around 1800 eur in total, estonian market
8. no issues during checkup, next one scheduled this month, April 2018
9. non basic equipment, hard to say what's inside, please ask then I might find out directly from the owner

What do I want to know... No idea tbh, probably things I need to look into? I am planning to take it for diagnostics and here's a list I came up with:

1. battery - how to check it, what to keep in mind and etc?
2. 5th cylinder - please help here, why is it important, how to check?
3. thorough body inspection, rust or maybe 1st owner was not completely honest e.g. check if trunk has been wielded together after a crash, apparently if not done right, ventilation flow won't be as designed then the battery will overheat which will lead to issues
4. check oil pump, but why and how?
5. check if oil in the transmission has to be changed, if not then when and how do I check that?
6. check stickers on all elements: doors, windows, trunk, whatnot... to ensure all body parts are original or else chances are it has been in a crash - thoughts on this?
7. check all air filters, but why and how important this is?
8. what else?

Thanks