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2021 Ford F-350
Key Replacement - Save vs Dealer in San Diego

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2021 Ford F-350 Smart Key
Smart Key

Not all locksmiths are created equal. EZ Car Keyz is BBB A+ rated, fully licensed and insured, and trusted by thousands of customers across the area. Your vehicle is in good hands.

CA BSIS LICENSE LCO#6792
Licensed Since 2016 NASTF Approved Damage Coverage
Fast Response15-25
min arrival
100+reviews
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Certified 2021 Ford F-350 key replacement info from EZ Car Keyz Poway CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
Certified 2021 Ford F-350 key replacement info from EZ Car Keyz Poway CA
Key specialists
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Fixed pricing
Fully Insured
Liability coverage and background-checked technicians
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8+ Years in Business
Over 10,000 keys made across the region
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2021 Ford F-350
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Ford key typeMost Popular
2021 Ford F-350 Smart Key M3N-A2C93142600
FCC IDM3N-A2C93142600Part #164-R8149Buttons5BatteryCR2450Frequency902 MHzRemote StartYes
✓ In Stock · Programmed On-Site
OEM quality 2021 Ford F-350 key fob from EZ Car Keyz Poway CA
Skip the Dealer Markup
Professional key, honest rate
OEM quality 2021 Ford F-350 key fob from EZ Car Keyz Poway CA
🔧 PRO TIP
The 2021 F-350 smart key runs a CR2450 cell, which is a larger coin battery than most Ford fobs use. Easy to mix up at the store if you're not looking closely. The fob has 5 buttons and the battery is behind a slide-release cover on the back. Before you call anyone, pull that cover, swap the battery, and reseat it firmly. A loose CR2450 in this fob will read as intermittent or completely dead to the truck, and owners on the Super Duty forums chase ghost programming problems for weeks before realizing the battery wasn't making full contact. Also worth knowing: the 2021 F-350 has a backup start method built in. If the truck isn't reading the fob wirelessly, hold the fob directly against the start button and press. The truck is designed to read the fob at close range for exactly this situation. That's your first diagnostic step before assuming the fob needs programming or replacement.
Related services: Ignition Repair · Smart Key

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EZ Car Keyz
EZ Car Keyz
Dealership
Average Cost
✓ $$
✕ $$$$
Location
✓ We come to you
✕ You drive there
Wait Time
✓ 20-45 min
✕ 2-5 days
Same-Day
✓ Yes
✕ Rarely
All Keys Lost
✓ No problem
✕ Tow required
OEM Quality
✓ Yes
✓ Yes
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2021 Ford F-350 Smart Key Replacement - Fast, Affordable & Professional

I got a call from a business owner out in the Poway Business Park, one of those industrial suite setups off Stowe Drive. He had a 2021 F-350 sitting in the lot and a key that the truck had decided to stop recognizing. No warning, no gradual fade. Worked fine Monday, dead Tuesday morning.

He had already tried the battery. Fresh CR2450, correct size, seated properly. Truck still sat there throwing a key-not-detected warning. He'd also done what a lot of people do when they get frustrated: kept hitting the start button over and over. That's the one thing I wish people wouldn't do, because repeated failed attempts can complicate the immobilizer state and turn a simple reprogram into a longer job.

Before he called me, he'd called someone else. Not a licensed locksmith. A number that came up in an ad, no BSIS license on file, no verifiable address. The person on the phone quoted him something low and vague. He got suspicious and hung up before anyone showed up, which was the right call.

He found me through Google Guaranteed, which shows my BSIS license right there in the listing. First thing he asked when I picked up was whether I was actually licensed. I gave him my license number on the spot and told him to look it up on the BSIS website while we talked. He did. That's exactly how it should work.

I drove out to the Poway Business Park, pulled up next to the truck, and connected my diagnostic equipment. The fob itself was fine, the battery was fine, but the truck's security system had the key in a degraded state from the repeated start attempts. Cleared it out, re-registered the fob, confirmed all five buttons were live, and verified a clean start cycle.

He mentioned the dealer had given him a timeframe of several days, which would have meant renting something to get through the week. The whole job took me under an hour on site. He was back to work the same morning.

The dealer comparison came up at the end. He asked what they would have charged. I told him I had no idea what they'd quote, but I knew what I charged, and he could tell from his own math whether it was worth it.

Save vs the Dealer on Your Ford F-350 Key

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BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
NASTF Certified Automotive Locksmith - Vehicle Security Professional
NASTF Certified
National Automotive Service Task Force
Fully Insured Locksmith - Hiscox Liability and Vehicle Damage Coverage
Fully Insured
Liability & vehicle damage coverage
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Also serving: Garden Road Area · Lake Poway Area · Old Poway · Poway Business Park

Ford F-350 Rapid Response, Done Right

Rapid response in the field

Licensed locksmith replacing 2021 Ford F-350 key in Poway CA
Smart Key | Rapid On-Site Service
2021 Ford F-350 | San Diego
Licensed locksmith replacing 2021 Ford F-350 key in Poway CA
2021 Ford F-350 Smart Key
2021 Ford F-350
Smart Key | Pro Grade Service
Estimated arrival time to Poway
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Service location Poway
Poway
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619 Area
Same-Day Keys (619) 876-1271

What Trust Looks Like in Reviews

100+ customers who trusted us

G
Gordon H.
Dec 2020
★★★★★

“My son had an issue opening the driver door on his Honda Civic. I called on New Year's Day and expected a nightmare, but they arrived quickly and fixed the problem in about half an hour.”

Google Review
T
T Klein
May 2020
★★★★★

“I needed a second key made for my 2012 Nissan Altima. They arrived quickly, finished in about 15 minutes, and gave me the best price I could find.”

Google Review
W
Winter K.
Dec 2025
★★★★★

“I lost my key and called EZ Car Keyz. Marco was great. He arrived quickly, explained everything clearly, and kept me informed throughout the entire process. The service was fast, professional, and fairly priced.”

Google Review
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5-star review of 2021 Ford F-350 key service by EZ Car Keyz Poway CA
“Real savings, real reviews.”
5-star review of 2021 Ford F-350 key service by EZ Car Keyz Poway CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Ford F-350 Mobile Service FAQ

Real costs, no dealer surprises

My key broke and part of it is stuck in the ignition. Can you get it out?
Yes, that's a recoverable situation. On trucks with a traditional ignition cylinder, we can extract the broken piece without damaging the lock housing. One thing specific to the 2021 F-350 worth knowing: this truck uses a push-button start, so a key blade physically stuck in an ignition cylinder isn't a typical failure mode for this year. What does happen is the physical key blade inside the smart fob snapping or getting damaged. That blade is the emergency mechanical key for the door lock, and if it breaks, you lose that backup entry method. If your blade is broken or your fob housing is cracked, full replacement is the right move. We cut a new blade to your vehicle and re-register the fob so the truck's security system recognizes it. You don't want to keep running on a compromised fob and discover on the worst possible morning that it stopped working.
What exactly is a smart key and how does the 2021 F-350 use it?
My F-350 says key not detected. What should I do first?
I bought a replacement fob online. Can I program it myself to my 2021 F-350?
How many keys can the 2021 F-350 hold in memory, and does adding one erase the others?
Questions? Call (619) 876-1271

Ford F-350 Key Service Areas

Same licensed team, every city

📍San Diego County
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San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado
Licensed 2021 Ford F-350 locksmith service area in San Diego County CA
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Trusted 2021 Ford F-350 locksmith service by EZ Car Keyz Poway CA
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