VENTURA COUNTY
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2021 Cadillac XT4
Key Replacement - Save vs Dealer in Ventura County

Quick Dispatch | Same-Day Keys

Available
2021 Cadillac XT4 Smart Key
Smart Key

Time matters when you need a car key. Our technicians are dispatched quickly with everything needed to cut and program your replacement key on the spot. No delays, no runaround.

CA BSIS LICENSE LCO#6792
Today Not Thursday Under 1 Hour On Our Way
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Certified 2021 Cadillac XT4 key replacement info from EZ Car Keyz Ventura CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Certified 2021 Cadillac XT4 key replacement info from EZ Car Keyz Ventura CA
Key specialists
Fast Response
Average arrival time: 15-25 minutes
Fixed pricing
Same-Day Service
Call now, get your key today - no waiting days
Fast mobile service
Done in Under 1 Hour
Key cut and programmed in 20-45 minutes
805 Special
10% OFFCODE:EZ-805-2026

🔥 Done in under an hour, save 10% 🔥

Quick keys, quick savings
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2021 Cadillac XT4
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Cadillac key typeMost Popular
2021 Cadillac XT4 Smart Key HYQ2ES
FCC IDHYQ2ESPart #13522879Buttons5BatteryCR2032Frequency433 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Push To Start
2021 Cadillac XT4 Smart Key HYQ2ES
FCC IDHYQ2ESPart #13522872Buttons4BatteryCR2032Frequency433 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Smart Key
2021 Cadillac XT4 Smart Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
OEM quality 2021 Cadillac XT4 key fob from EZ Car Keyz Ventura CA
Skip the Dealer Markup
Professional key, honest rate
OEM quality 2021 Cadillac XT4 key fob from EZ Car Keyz Ventura CA
🔧 PRO TIP
The 2021 XT4 uses the factory FCC ID on the fob printed on the back label. Check it before ordering anything online, because there are different fob generations floating around and not all of them are cross-compatible with this vehicle's immobilizer setup. The battery is a CR2032. A weak one doesn't always kill the fob outright. It can cause the door handles to stop responding while the start button still sees the key, or flip it the other way: start button loses the key but the doors still lock. Those partial failures get misread as a programming problem when it's just a dying cell. Swap the CR2032 first, seat it clean, and retest all functions before assuming anything deeper is wrong.
Related services: Ignition Repair · Smart Key

Cadillac XT4 Speed Comparison

See how fast we finish vs dealer delays

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
EZ Car Keyz wins 5 out of 6
Back on the road before the dealer even calls back
Book Service (805) 790-8162

2021 Cadillac XT4 Smart Key Replacement - Fast, Affordable & Professional

I was out near Ventura Harbor on a Tuesday when I got the call. The customer had already paid someone else for a replacement smart key on his 2021 Cadillac XT4. The other locksmith cut the blade, did something with a tool, handed the key over, and left. The car cranked fine. Then it died after about two seconds, every single time.

He called the first guy back. Got told the body control module was probably bad. Then he called me.

When I arrived, I asked him to try it once so I could watch. Crank, brief fire, shutdown. Classic incomplete immobilizer learn. The blade was cut correctly, I verified that myself. The issue was that the key had been written to the system but the security learn cycle never completed. That sequence has a timed component, and if anything interrupts it or the steps get rushed, the key registers temporarily but doesn't hold. The module keeps the entry but won't authorize the engine to run past that first couple seconds.

I connected through the OBD port, cleared the incomplete key data, and ran a full clean learn with the security timer allowed to finish without interference. Then I tested the key three times back to back. Started clean each time, no cutoff. I walked every button on the fob and confirmed the immobilizer was showing the key as permanently stored before I packed up.

His body control module was fine. Always was. The job just hadn't been done all the way through the first time.

The dealer comparison almost didn't come up. He was just relieved the car ran. But when he asked what the dealer would have charged to sort this out, I told him he'd have paid more and waited a day, at minimum. He'd already spent money on the first locksmith. I couldn't undo that. I could just make sure the second call was the last one.

Save vs the Dealer on Your Cadillac XT4 Key

Get your key for hundreds less than the dealer. Same quality, same result, better price.

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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
Google Guaranteed Locksmith - Verified and Background Checked
Google Guaranteed
Verified & backed by Google
Also serving: Casitas Springs · College · Downtown Ventura · East Ventura

Cadillac XT4 Rapid Response, Done Right

Rapid response in the field

Licensed locksmith replacing 2021 Cadillac XT4 key in Ventura CA
Smart Key | Rapid On-Site Service
2021 Cadillac XT4 | Ventura County
Licensed locksmith replacing 2021 Cadillac XT4 key in Ventura CA
2021 Cadillac XT4 Smart Key
2021 Cadillac XT4
Smart Key | Done in Minutes
Estimated arrival time to Ventura
Fast Dispatch
Rapid Arrival
Available Today
Service location Ventura
Ventura
Rapid Service Zone
805 Area
Same-Day Keys (805) 790-8162

Speed That Gets Five Stars

Speed that earns five-star reviews

Z
Zebadiah A.
Oct 2025
★★★★★

“Super fast service. About 20 minutes from the call he was already there. He had an authentic replacement on hand and made a spare key for my 2017 Nissan Rogue in about 15 minutes. Great prices, friendly, and very professional.”

Google Review
D
Diya M.
Jan 2025
★★★★★

“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.”

Google Review
E
Edelson E.
Oct 2025
★★★★★

“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.”

Google Review
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5-star review of 2021 Cadillac XT4 key service by EZ Car Keyz Ventura CA
“Real savings, real reviews.”
5-star review of 2021 Cadillac XT4 key service by EZ Car Keyz Ventura CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Cadillac XT4 Mobile Service FAQ

Real costs, no dealer surprises

I lost all my keys to my 2021 Cadillac XT4. Can you make a new one on site?
Yes, and this is one of the more common calls I get on Cadillac products. All-keys-lost on the XT4 means the vehicle has no recognized key in memory, so the job involves clearing the existing key data, running a fresh immobilizer learn with the full security sequence, cutting the emergency blade, and confirming the new fob is permanently stored before I leave. The dealer will tell you to tow it in. That's just how they work. I come to where the car is. If you're parked at Ventura Harbor or anywhere else in Ventura, that's where I show up. Budget 45 to 60 minutes for the full job once I'm there. The security learn has a timed element built in that can't be skipped, so there's no rushing that part.
Does the XT4 really have to be towed to the dealer if there's no working key?
How long does an all-keys-lost job take on a 2021 XT4?
My 2021 XT4 key fob works fine for locking and unlocking but the door handles stopped waking up when I walk up. Is the fob going bad?
I bought a replacement fob online for my XT4. Can I program it myself?
Questions? Call (805) 790-8162

Cadillac XT4 Key Service Areas

15-25 min response in most areas

📍Ventura County & SB
Ventura County service area map
805 LOCAL LOCKSMITH
need a key? 🔑
Santa Barbara
Santa BarbaraETA 30-35 min
Goleta
GoletaETA 30-35 min
Isla Vista
Isla VistaETA 30-35 min
Montecito
MontecitoETA 25-30 min
Carpinteria
CarpinteriaETA 20-25 min
Ojai
OjaiETA 20-25 min
Ventura
VenturaETA 10-15 min
Santa Paula
Santa PaulaETA 20-25 min
Fillmore
FillmoreETA 25-30 min
Oxnard
OxnardETA 10-15 min
Port Hueneme
Port HuenemeETA 10-15 min
Camarillo
CamarilloETA 15-20 min
Moorpark
MoorparkETA 25-30 min
Simi Valley
Simi ValleyETA 30-35 min
Thousand Oaks
Thousand OaksETA 20-25 min
Santa BarbaraGoletaMontecitoCarpinteriaOjaiVenturaSanta PaulaFillmoreOxnardPort HuenemeCamarilloMoorparkSimi ValleyThousand Oaks
Licensed 2021 Cadillac XT4 locksmith service area in Ventura County CA
Licensed 2021 Cadillac XT4 locksmith service area in Ventura County CA
Stranded in Ventura County? We respond fast

Same-day service available in all listed cities

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Fast Cadillac XT4 Key Replacement

Need your key today? We make it happen. Same-day service, every day, 6 AM to 11:30 PM.

Trusted 2021 Cadillac XT4 locksmith service by EZ Car Keyz Ventura CA
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