VENTURA COUNTY
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Fast Response Locksmith

2003 Toyota Sequoia
Key Replacement - Save vs Dealer in Ventura County

Home or Office | We Handle It There

Available
2003 Toyota Sequoia Remote
Remote

Skip the trip to the dealer. Our mobile locksmith brings professional-grade equipment right to your door anywhere in the area. Your new key is cut and programmed while you wait.

CA BSIS LICENSE LCO#6792
Your Car, Your Spot No Driving Needed Fully Mobile
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Stranded without a 2003 Toyota Sequoia key? EZ Car Keyz Fillmore CA can help
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Stranded without a 2003 Toyota Sequoia key? EZ Car Keyz Fillmore CA can help
Key specialists
Key Specialists
Fully equipped mobile unit - all makes and models
Fixed pricing
At Your Location
Home, office, parking lot - wherever you are
Fast mobile service
No Towing Needed
We handle everything on-site, even all-keys-lost
805 Special
10% OFFCODE:EZ-805-2026

🔥 Mobile service plus 10% off 🔥

Redeem when we arrive at your location
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2003 Toyota Sequoia
Key Options

Dealer-grade key for a fair, honest price

Remote
Most popular Toyota key typeMost Popular
2003 Toyota Sequoia Remote HYQ12BBX
FCC IDHYQ12BBXPart #89742-0C030Buttons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
MECHANICAL-KEY
2003 Toyota Sequoia MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Emergency 2003 Toyota Sequoia key fob made from scratch by EZ Car Keyz Fillmore CA
Skip the Dealer Markup
Professional key, honest rate
Emergency 2003 Toyota Sequoia key fob made from scratch by EZ Car Keyz Fillmore CA
🔧 PRO TIP
The 2003 Sequoia uses a separate remote and transponder key setup, not a smart key. The remote is HYQ12BBX (part 89742-0C030) running on a CR2032, but the actual engine start relies on a 4C/4D transponder chip inside the key blade. If your remote dies, the car still starts because the chip is passive. If the car won't start but the remote still locks and unlocks, your problem is the transponder side, not the battery. Two totally different systems.
Related services: Ignition Repair · Smart Key

Your Driveway vs Their Lobby

Skip the trip, skip the wait

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
No appointment, no lobby, no hassle
Book Service (805) 790-8162

2003 Toyota Sequoia Remote Replacement - Fast, Affordable & Professional

Out in Fillmore, near the Heritage Valley Tourism Bureau, a guy lost his only Sequoia key somewhere between a gravel lot and the walking path. He spent almost an hour retracing his steps, checked every pocket twice, asked around. Nothing. His 2003 Sequoia was locked in the lot and he had no spare.

He called me expecting a tow and a long wait. I told him to sit tight.

I started with my TOY43 Lishi tool. The Sequoia runs the standard TOY43 keyway, and the Lishi reads each wafer position inside the door cylinder so I can decode the bitting without any original. Once I had the cut depths, I cut a new blade on site.

Next step was the immobilizer. The 2003 Sequoia uses Toyota's older transponder system with a 4D67 chip. For an all-keys-lost situation, I connected through the OBD-II port, cleared the old key registration from the immobilizer ECU, and wrote the new transponder. Then I programmed the HYQ12BBX remote separately since the remote and immobilizer are independent systems on this generation.

He turned the key and the 4.7 V8 fired right there in the same lot. The whole job from decode to running engine was about 50 minutes. He had already called the dealer and they quoted him a tow plus a multi-day wait. This took less than an hour and cost a fraction of that.

Save vs the Dealer on Your Toyota Sequoia Key

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

Get Pricing (805) 790-8162 Text Us
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: Downtown Fillmore · Heritage Valley · North Fillmore

Toyota Sequoia Rapid Response, Done Right

Rapid response in the field

All keys lost service for 2003 Toyota Sequoia by EZ Car Keyz Fillmore CA
Remote | Rapid On-Site Service
2003 Toyota Sequoia | Ventura County
All keys lost service for 2003 Toyota Sequoia by EZ Car Keyz Fillmore CA
2003 Toyota Sequoia Remote
2003 Toyota Sequoia
Remote | Made at Your Door
Estimated arrival time to Fillmore
We Come to You
Rapid Arrival
Available Today
Service location Fillmore
Fillmore
We Come Here
805 Area
Same-Day Keys (805) 790-8162

Mobile Service, Five-Star Results

Mobile service, five-star feedback

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
Watch real savings, real jobs62KFollowers
Locked out rescue review for 2003 Toyota Sequoia - EZ Car Keyz Fillmore CA
“Real savings, real reviews.”
Locked out rescue review for 2003 Toyota Sequoia - EZ Car Keyz Fillmore CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Toyota Sequoia Mobile Service FAQ

Real costs, no dealer surprises

I lost my only key for my 2003 Sequoia. Can you make one without the original?
Yep. All-keys-lost on the first-gen Sequoia is a standard field job for me. I decode the TOY43 lock cylinder with a Lishi tool to get the mechanical cut, then connect through OBD-II to reset the immobilizer ECU and register a new 4D67 transponder chip. The HYQ12BBX remote gets programmed separately after that. Old keys get wiped so they can't start or unlock anything. The whole thing runs about 45 to 55 minutes on site. No tow, no dealer wait.
How much more does all-keys-lost cost compared to getting a spare made?
Do aftermarket remotes work for the 2003 Sequoia or should I get OEM?
My Sequoia cranks but won't start and the security light is blinking. What does that mean?
Can I program a new remote for my 2003 Sequoia myself at home?
Questions? Call (805) 790-8162

Toyota Sequoia Key Service Areas

Every city, same mobile service

📍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
Lockout rescue coverage for 2003 Toyota Sequoia in Ventura County CA
Lockout rescue coverage for 2003 Toyota Sequoia in Ventura County CA
Stranded in Ventura County? We respond fast

We come to your exact location in any of these cities

SOS Call (805) 790-8162
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Toyota Sequoia car key replacement video
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Toyota Sequoia Key Without Leaving Home

One call, one visit, done. No back-and-forth with the dealer, no second trips for parts.

Locked out of your 2003 Toyota Sequoia? Get help from EZ Car Keyz Fillmore CA
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Ventura County