Hi, new to this forum, although I've read a lot threads regarding my 2003 Montero Limited 3.8L.. It's a great vehicle, and I'd like to keep it a while.,,,

The SUV has a new battery, and all lights, etc. are lighting up as expected. When I turn the key to the start position, nothing happens. I've had the key replaced a year or so ago, and had to use the brake code trick to bypass the immobilizer and drive it to the dealer to get the key programmed. All has been working well since then, until the car refused to crank like the immobilizer was activated.
I checked the fuses, and would like to check the starter relay/fuse before have to have it towed. Can anyone share where and how to get to the starter relay, or any other helpful info ? I've been searching the internet, yet can't find much. I called the dealer, and they would not help. Thanks in advance. .