VENTURA COUNTY
6AM - 11:30PM • MOBILE SERVICE •
Call or Text (805) 790-8162
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Fast Response Locksmith

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

No Delays | No Runaround

Available
2003 Toyota Sienna Transponder Key
Transponder Key

Need your key replaced today? We offer same-day mobile service with an average arrival time of 20-30 minutes. Most keys are cut and programmed in under 45 minutes.

CA BSIS LICENSE LCO#6792
Immediate Response Done While You Wait No Multi-Day Wait
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
2003 Toyota Sienna key replacement info - no tow needed - EZ Car Keyz Ventura CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2003 Toyota Sienna key replacement info - no tow needed - EZ Car Keyz Ventura CA
Key specialists
15-25 Min Arrival
Our mobile unit is dispatched immediately
Fixed pricing
No Appointment Needed
Walk-up service available 7 days a week
Fast mobile service
Quick Turnaround
Most keys completed in under 45 minutes on-site
805 Special
10% OFFCODE:EZ-805-2026

🔥 Back on the road fast, for less 🔥

Get your key & your discount fast
REDEEM (805) 790-8162

2003 Toyota Sienna
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Toyota key typeMost Popular
2003 Toyota Sienna Transponder Key
FCC IDPart #PE-TOY43AT4ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2003 Toyota Sienna Remote GQ43VT14T
FCC IDGQ43VT14TPart #89742-06010Buttons3BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
MECHANICAL-KEY
2003 Toyota Sienna MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
2003 Toyota Sienna key fob cut and delivered to you in Ventura CA
Skip the Dealer Markup
Professional key, honest rate
2003 Toyota Sienna key fob cut and delivered to you in Ventura CA
🔧 PRO TIP
The 2003 Sienna runs Toyota's first-gen fixed-code transponder system, known as Texas Instruments DST (Digital Signature Transponder). The chip inside the key is a Texas Crypto 4D-67, and it talks to the transponder ECU through an amplifier coil ring around the ignition cylinder. No remote, no buttons, just a physical key with an embedded chip. If the immobilizer light on the dash (the car-shaped icon with a key) stays solid or blinks when you turn the ignition, the system is not reading the chip. Could be a dead chip, a cracked key blade putting the chip too far from the coil, or a failing amplifier coil. Check the key shell for hairline cracks near the head first.
Related services: Ignition Repair · Smart Key

Toyota Key: Same-Day vs Dealer Timeline

Speed matters - see the numbers

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
Done in minutes, not days
Book Service (805) 790-8162

2003 Toyota Sienna Transponder Key Replacement - Fast, Affordable & Professional

A guy near the Lake Casitas Recreation Area in Ventura flagged me down, so to speak. He called on a Thursday afternoon saying his 2003 Toyota Sienna would not start and the dealer told him it would be a week before they could get him in, plus he would need a tow.

He had one key left, and it was beat. The plastic shell had a crack running down the side and the blade was worn smooth enough that you could barely feel the cuts. He had been jiggling it in the ignition for months. What finally happened is the transponder chip, a 4D-67, shifted inside the cracked housing just far enough from the coil ring that the immobilizer ECU stopped reading it. Dashboard showed the key-shaped indicator light blinking steadily. Engine cranked but would not fire.

I pulled up, set my VVDI Key Tool on the hood, and cloned his 4D-67 chip data onto a fresh blank inside a new TOY43 key shell. Cut the blade on my Triton machine right there in the lot using his old key as a reference, then verified the cuts against the door lock before going to the ignition.

Key turned, light went off, engine caught on the first try. He sat there for a second like he was waiting for it to stall.

Whole job took about 20 minutes. His old key went in his glovebox as a backup. No tow truck, no week-long wait, and he paid a fraction of what the dealer quoted.

Save vs the Dealer on Your Toyota Sienna 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: Casitas Springs · College · Downtown Ventura · East Ventura

Toyota Sienna Rapid Response, Done Right

Rapid response in the field

2003 Toyota Sienna key replaced in your driveway in Ventura CA
Transponder Key | Rapid On-Site Service
2003 Toyota Sienna | Ventura County
2003 Toyota Sienna key replaced in your driveway in Ventura CA
2003 Toyota Sienna Transponder Key
2003 Toyota Sienna
Transponder 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

Fast Keys, Happy Customers

Quick service that speaks for itself

E
Erick
Nov 2025
★★★★★

“A+ service at an even better price. Tim was a lifesaver. I lost my original and only key for my Audi and he was willing to come to my location at 8pm the same day. He worked fast, communicated clearly, and made sure everything worked before leaving.”

Google Review
H
Hunter P.
Jul 2025
★★★★★

“I called over 40 locksmiths trying to get a key made for my Audi A6 and nobody could do it. Tim made it easy, fast, and affordable. He showed up with a smile and got the job done without any stress. Absolute wizard with keys.”

Google Review
E
Esteban S.
Dec 2025
★★★★★

“My Chevy key snapped while I was running errands in North Oxnard. He removed the broken piece from the ignition, cut a new blade, programmed the transponder, and tested everything thoroughly. The whole job was smooth and professional. Best automotive locksmith I have used.”

Google Review
Watch real savings, real jobs62KFollowers
Locksmith came to me for 2003 Toyota Sienna key - EZ Car Keyz Ventura CA review
“Real savings, real reviews.”
Locksmith came to me for 2003 Toyota Sienna key - EZ Car Keyz Ventura CA review
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Toyota Sienna Mobile Service FAQ

Real costs, no dealer surprises

What if I need a replacement key for my 2003 Sienna after hours or on a weekend?
Toyota dealer service departments mostly close by 5 or 6 PM on weekdays and stay dark on Sundays. If your only key breaks on a Saturday night, you are waiting until Monday at the earliest, and that is before they schedule you in. I work outside those hours in Ventura, including the Lake Casitas Recreation Area. One call and I can usually get to you the same evening or next morning. No tow needed since I come to wherever the Sienna is sitting.
How long does it take to cut and program a new transponder key on site?
Can you make a 2003 Sienna key faster than the Toyota dealer?
My 2003 Sienna sometimes will not start, then works fine ten minutes later. Is the key failing?
I bought a blank transponder key online for my Sienna. Can I program it myself?
Questions? Call (805) 790-8162

Toyota Sienna Key Service Areas

No delays, any service area

📍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
Doorstep 2003 Toyota Sienna locksmith coverage across Ventura County CA
Doorstep 2003 Toyota Sienna locksmith coverage across Ventura County CA
Stranded in Ventura County? We respond fast

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Toyota Sienna car key replacement video
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Quick 2003 Toyota Sienna Key Service

Time matters when you need a key. We treat every call as urgent and arrive ready to work.

Skip the dealer for 2003 Toyota Sienna car key - EZ Car Keyz Ventura CA
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