2004 Mitsubishi Montero Sport
Key Replacement - Save vs Dealer in San Diego
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With 100+ verified Google reviews and every major industry certification, EZ Car Keyz is the locksmith trusted by families, businesses, and fleet managers throughout the area.

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2004 Mitsubishi Montero Sport
Key Options
Dealer-grade key for a fair, honest price
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2004 Mitsubishi Montero Sport Transponder Key Replacement - Fast, Affordable & Professional
He got off work and walked out to the park and ride near Third Avenue Village in Chula Vista, and his 2004 Montero Sport just sat there. Doors locked. Key would not respond. He tried the blade in the door, which got him inside, but the truck would not start. He tried the key again. Nothing. The engine would crank but would not fire and hold. That is the immobilizer doing its job, except it was doing it to the wrong person.
The Mitsubishi dealer could see him Thursday. It was Monday.
He found EZ Car Keyz online and called. I was at the lot in about 35 minutes.
Once I got there, I connected to the OBD port and read the immobilizer module. The transponder chip in his key had simply stopped communicating. It was not the ignition, not the antenna ring, not the wiring. The chip inside his key had failed. It happens on these, especially on a key that has been on a heavy ring getting bumped around for twenty years.
I cut a new key blade to match his vehicle, loaded it with the correct transponder, and ran the registration sequence. Every key he had on him went through the session so nothing got left behind. Tested crank, tested start, tested a second time for good measure.
He drove home that same Monday evening. The dealer route would have meant a tow, a wait until Thursday, and a bill that made him wince just thinking about it. The way it actually went cost him a fraction of that.
One thing he said before he left stuck with me: he had no idea the chip inside the key could fail on its own, with no physical damage to the key at all. Most people don't.
Save vs the Dealer on Your Mitsubishi Montero Sport Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
Mitsubishi Montero Sport Rapid Response, Done Right
Rapid response in the field
Proven by 100+ Mitsubishi Customers
Proven by reviews, backed by licenses
“This is the only locksmith anyone should ever call. I am still shocked at how fast he arrived and the price was hundreds less than other quotes I received. Honest, professional, and extremely efficient.”
“Locked out on a weekend night and everyone else wanted $300+. EZ Car Keyz sent Roman late at night for much less. He worked for over an hour and did not give up until the door opened. They even made a new key on the spot.”
“I had two Subaru key fobs made and Marco provided excellent service. He stayed persistent through multiple part orders to make sure everything was correct. Very thorough, punctual, and great communication throughout.”
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