2021 Ford F-350
Key Replacement - Save vs Dealer in Ventura County
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2021 Ford F-350
Key Options
Dealer-grade key for a fair, honest price
Certified Mobile vs Dealer Service
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2021 Ford F-350 Smart Key Replacement - Fast, Affordable & Professional
Westlake Village area contractor called about his 2021 F-350. Remote start quit working from outside his supply house, but the truck still started fine with the button.
He'd already tried the basics. New CR2450, cleaned the contacts, even bought a second battery to be sure. The M3N-A2C93142600 fob looked perfect inside. No corrosion, no loose clips. But remote start stayed dead.
I plugged in and pulled codes. The BCM had logged "RKE Module Communication Lost" about fifty times. That pointed straight to TSB 21-2188, which Ford put out for exactly this issue on 2020-2022 Super Dutys. The RKE module loses sync with the BCM and needs a reset, not a new key.
Ten minutes on FORScan to clear the module and relearn the key signals. Then the real test: three remote starts from different distances. Worked from the cab, worked from 30 feet, worked from inside the supply house.
He thought he needed a whole new smart key setup. What he needed was someone who knew about the TSB and had the right tools to fix it on site. Saved him whatever the dealer wanted for a replacement fob that wouldn't have solved anything.
Save vs the Dealer on Your Ford F-350 Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
Ford F-350 Rapid Response, Done Right
Rapid response in the field
Trusted by 1,000+ Ford Drivers
Rated 5.0 on Google and Yelp
“Tim went above and beyond. I struggled all day trying to program a new FOB and nothing worked. Tim helped me patiently, even recommending cheaper options since I was on a tight budget. He eventually came all the way to Ojai late at night and fixed everything.”
“My key fob stopped working while I was at Oxnard Harbor and I thought I was going to need a tow. EZ Car Keyz showed up fast, programmed a new fob, checked everything carefully, and made sure the car was fully functional before leaving.”
“Needed a spare car key made and chose EZ Car Keyz based on their reviews. The reviews were right. They gave me the best price, responded quickly to all my questions, came to my workplace, cut the keys on site, and finished fast.”
Ford F-350 Key Service Areas
Certified service across the region

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