Question 1

Do I have to go to the Mitsubishi dealer to get a replacement key for my 2000 Montero?

Accepted Answer

No. A mobile locksmith with the right tools and software coverage for this generation of Mitsubishi can handle the full job on site. That means decoding or cutting the blade and programming the transponder chip to your vehicle's immobilizer, done in your driveway or parking lot.

The dealer route for a vehicle this age usually means scheduling time out, potentially a tow if you're down to zero working keys, and paying for a full labor hour on a job that takes a fraction of that time in actual work. With a mobile locksmith, you skip all of that. One visit, one location, done.

Question 2

What exactly is a transponder key and why does my 2000 Montero need one?

Accepted Answer

A transponder key looks like a regular metal key, but there's a small chip embedded in the plastic head. When you turn the key in the ignition, the vehicle's immobilizer reads that chip. If the chip isn't there, isn't programmed, or isn't recognized, the immobilizer cuts the engine off. The car may crank, it may even fire briefly, but it won't stay running.

This is purely a security feature. The blade has to be cut correctly so the key turns, and the chip has to be programmed so the immobilizer accepts it. Both steps matter. One without the other and you're not going anywhere.

There are no buttons on this key. It's a turn-key ignition only. The transponder chip does its job silently in the background every time you start the vehicle.

Question 3

How long does getting a replacement key from the dealer actually take for a 2000 Montero?

Accepted Answer

Longer than most people expect, and with a vehicle this age it can get complicated. Older Mitsubishi models sometimes run into dealer situations where technician familiarity with the immobilizer system on that generation is limited, parts have to be sourced, and time gets billed well beyond what the actual programming work requires.

With EZ Car Keyz, the job is done in one visit in San Marcos. No appointment weeks out, no tow, no waiting room. The Richland area is a regular stop for me.

Question 4

My 2000 Montero starts and then immediately stalls. Could this be a key or immobilizer problem?

Accepted Answer

Yes, that's a classic immobilizer symptom. Starts and immediately stalls usually means the engine management system got a crank signal but the immobilizer didn't authorize it, so it cuts fuel or ignition right after startup. This can happen if the chip in the key has degraded, if the key was copied without properly programming the chip, or if there's a fault in the immobilizer system itself.

It can also point to a communication issue between the key and the antenna ring around the ignition cylinder. That ring reads the chip every time you turn the key. If it's damaged or has a wiring issue, even a correctly programmed key can fail to be read consistently.

I diagnose this on site. If it's a key issue, a freshly programmed replacement key fixes it. If it's the antenna ring or the immobilizer module, I'll tell you exactly what you're dealing with before any work is done.

Question 5

I lost my only key for my 2000 Montero. Can a new key still be made without the original?

Accepted Answer

Yes. All-keys-lost on a vehicle this age is a workable job. I can decode the blade from the door lock or ignition cylinder directly, cut a new key to match, and program the transponder chip to the immobilizer. You don't need to hand over an original key for any part of that process.

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