2021 Chrysler 300
Key Replacement - Save vs Dealer in Ventura County
Mobile Service | No Dealer Trip Needed
You shouldn't have to take a day off work for a car key. Our mobile service meets you at your location on your schedule. Most appointments available same day.
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2021 Chrysler 300
Key Options
Dealer-grade key for a fair, honest price
Chrysler Key: We Come to You
One comes to you, one makes you wait
2021 Chrysler 300 Smart Key Replacement - Fast, Affordable & Professional
A choir director flagged me down in the church lot near Cemetery Memorial Park. Her 2021 Chrysler 300 had already cost her once. Another locksmith charged full price for a key that never worked right. The engine would crank, run for two seconds, then die. Classic SKIM security shutdown.
She handed me the failed M3M-40821302 fob. Five buttons, fresh CR2032, clean contacts. The problem wasn't the hardware.
I connected my IM608 through the SGM bypass cable. Right away I saw it: the previous tech had entered PIN code but skipped the RF Hub security acknowledgment. The system had accepted the key temporarily but never wrote it to permanent memory. Every restart triggered another security check that failed.
First, I pulled the correct PIN from the RF Hub module. Cleared all the corrupted key data. Then ran the full security sequence with proper timing. The RF Hub confirmation came back clean. All five buttons tested: lock, unlock, trunk, panic, remote start. Engine started and stayed running.
She told me the dealer wanted to keep her car for a week to "diagnose the module." There was no module problem. Just incomplete programming. I showed her the RF Hub confirmation screen so she could see the key was properly stored this time.
She'd already paid the first locksmith. Couldn't fix that. But at least the job was done right now.
Save vs the Dealer on Your Chrysler 300 Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
Chrysler 300 Rapid Response, Done Right
Rapid response in the field
Real Reviews From Real Driveways
Customers who never left their driveway
“Fast, affordable, and a great price. Marco did an amazing job and made a key for our Nissan Kicks quickly and professionally. Everything worked perfectly.”
“I got locked out of my vehicle and also lost my key. Marco came out, made a new key for my Toyota, and got me back on the road. He was professional, friendly, and clearly knows what he is doing.”
“My ignition would not turn in La Jolla and I thought I needed a tow. EZ Car Keyz repaired the ignition on the spot and also made a spare key for safety. The technician worked carefully and confidently.”
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