your car have a 2000 CC in-line 6 toyota 1G- FE engine ? It is same engine plant loaded into Lexus 200, It is a tough enough and very hard to die as in DEAD. -
You need a 2nd opinion and correct diagnosis, please share more before failure happened. if vehicle is firing up & road worthy get it scanned and share the error codes . if some loser has attempted ECU reset by removing battery terminals and afterwards car declined to crank, the ecu need remapping from a Scantool.
however before any collapse there must've been alot of alert & beeps from dash cluster every time key start was pressed
reading your posts., i strongly believe oil pump failure due to GUNK in sump please read the link Xulfiqar posted for my ordeal.
The car can be conveniently overhauled in Karachi if you are willing to spare time and resources. Engine from YARDS are of unknown origin with zero record of maintenance and with no idea for how long those been in dumpster getting beaten from environment, last but no least the High wager for high devaluation in price of car after regn book modification.