What the heck happened ? Did a bottle explode, or someone sat on dozen packs from mc donald's, etc ?
I threw away anything that said Lexol over 15 years ago so cant speak about them now.. They were worthless leather products back then...
Not sure about Toyota leather if its really leather or what...
If it was in my Shop, I would try Einszett Deep Plastic Cleaner carefully on 1 little spot to see the results.
And go to Leather Master Deep Cleaner, etc., from there if not getting results, and after, making sure to put a conditioner back down to get it back to normal again.. I mean something to protect the seats and hopefully keep them from absorbing staining stuff again..
Optimum makes a good leather cleaner conditioner as well, that has a pleasant, non lingering smell to it..
Good luck !
Dan F