2007 Matrix XR with AC, 68000 miles.The serpentine belt is squeaking and has a decent amount of deflection when pulling it with my fingers. Is the belt just old and stretched out, or is the tensioner bad, or both? If I put a breaker bar on the tensioner and push towaards the firewall the slack in th...

What is the immobilizer? Do you have to bypass it, or can you just remove it completely? Do you have to bypass it when installing remote start, keyless entry, or both?Also, if I bypass the immobilizer, should I get a remote starter that has an alarm system built in?

Car:2007 Toyota Matrix XR, automatic, with keyless entryBackground:I've done a lot of electronics work, wiring, etc so I'm not a newb, but I am not familiar with how these systems are configured. I've wired in piggyback fuel computers and turbo timers.Questions:I want to add a remote starter with ke...