Renew your passport. If their immigration doesn't want to let you in because of it then there's nothing you can do.

I'm not sure if you can do it online anymore cuz I think they had it before but I dunno if it's still available and you still need to pick up the physical passport from their office so...no. You can't instantly do it. Here's a guide though:

http://www.imi.gov.my/index.php/en/main-se...tional-passport

Summary: Doing things last minute never pays off.