Hi, guys. We had our new Highlander outfitted with a remote starter by the dealer. Worked fine until we went on vacation for one week. Upon our return, it doesn't work. Any thoughts?

We have NO idea what brand remote starter kit they installed. Without that, no way to help

If you went straight to starter with jumper cables and you got nothing then , then pull and have starter bench tested. Also make sure you haven't trigger some kind of security on your system that would lock you out from starting. you should see a security light flashing if you did.

Immobiliser ?
Try this thread it may help - http://www.helpowl.com/a/Toyota/2008-Highlander/Research/5115?search=2008%20toyota%20highlander%20vsc%20check%20engine%20light

I think it's doubtful that your starter is draining the battery. Once your starter is engaged upon start up, it is done with its job, and it is not needed until the next start up. It does sound like your starter is going bad. If all of the electrical parts seem to come on when you trying to start it, it should have plenty enough juice to start it. One possible cheap solution is it could be the starter relay. The relay takes power from your battery and routes it through to your starter. If this isn't working, your starter isn't even getting any juice. I hope this is the problem. I have seen many starters replaced that should not have been because fo a bad starter relay. You would have to Google that info on a Monte Carlo. I could not tell you where it is on any Chevy.

Hyundai coupe siii
Hi my car won’t start it turns over fine but the immobiliser seem to be kicking in. Was running fine changed the battery an now won’t start. Any ideas?

Bad battery or starter connections ? Bad ground ?Or they installed a faulty starter, you are not missing anything i can think of.

My Caddy was working fine until yesterday when we went to get in, we couldnt unlock the car with the detector so we ended up using the key. when we did that we had NO Power at all car would not start up.. My husband ended up jumping the car off and it worked. we took it to Advance Auto and the guy tested the battery and he said it was fine... until i went to get in it the next day it did the samething and now im at work and it wont start any suggestions whats wrong?

dealer only ,factory immobiliser is cutting in, try the spare key and if it doesnt start call the breakdown truck to take it to dealer

You have probably been getting 'rebuilt' units which is not bad in itself but if the rebuilder received a batch of bad diodes they may have these failures until they are exhausted.
But, buddy, you ain't broke my record yet; a lousy Saturn (LAST GM I will own!) bought new, ate SIX (6) alternators in 57,600 miles. That wasn't the worst problem; it ate the auto tranny at 31,000 and dropped a rod cap at the above final mileage.    

Hi Tracy.
Yes its a new one to me too !
I presume its an automatic model ?
Possibly the gear selection inhibitor switch is at fault, due to water ingress ?
Have you tried starting in neutral ?
Do you hear any clicking from the engine starter at all, when you turn the key ?
If you do, then suspect the starter motor at fault.
I see you posted this on Dec the 6th, so expect you have located the problem by now, if not hope I have been of some help.
Best Wishes !
John.