Something seems to be drianing my battery. If I jump the MDX I am fine for a couple of months, but then out of the blue seem to have the same problem. Any thoughts? Could Lojack be the issue?

 

I would check to make sure your negative terminal is grounded properly. I could see lojack being the problem if you didnt drive it in those few months. The battery should be getting charged by your alternator everytime you drive. What yr do you have?

 

It is a 2005

I found this comment posted elsewhere but not much info for a lay person

"I have seen some problems with the passenger side multiplex units staying on and draining the battery"

 

you might need a new battery, i had to change mine out last year, i got a sears one thats supposed to last 7 years

 

X2 new battery. I bought a certified used and it died within 3 months.