lexus ls 400 98, starter replaced, issues after the fact

[lane clements]

my little brother owns a 1998 lexus ls 400 roughly 130k miles. he had to replace the starter, once he did that he was connecting everything back together, he accidentally put the battery in backwards and connected the opposite cables for a split second, blew like 10 fuses. we replaced the fuses, but now, he has no headlight or brake lights, no turn signals, his dash and instrument panels have no power, we only got the throttle response back after we changed some fuses. and his shifter is locked in park, thinking its an ecu problem just figured id ask here! email me if you have any ideas what it could be or want to know more, thank you so much!

Edited January 16, 2023 by lane clements
wrong make of car

[RX400h]

The one time I did that was with a 1994 Nissan van. It had a very beefy fuse that blew, and thankfully, that was the only one that needed to be replaced.

Here're some clues as to what to check for:

Toyota and Lexus jump start backwards - what to do now (carspecmn.com)