Good day po sa inyo

Need help on doing a DIY on my Starex Taillights, I want to remove the lens to clean it to look like new. How do you remove the lens of your tail lights? How can I break the seals? What methods do you use? Is it safe to remove the seal by submerging the whole thing in a hot water? I read about it on some forums, but cant find it anymore.

How long do you have to submerge it that it will only melt the seals but not the lens or the whole assembly?

How hot must the water be, before submerge it?

Thanks so much.