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2004 Toyota Sienna
Key Replacement - Save vs Dealer in Ventura County

Licensed & Insured | Mobile Key Experts

Available
2004 Toyota Sienna Transponder Key
Transponder 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
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min arrival
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2004 Toyota Sienna car key service at your door in Ventura CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2004 Toyota Sienna car key service at your door in Ventura CA
Key specialists
BSIS Licensed
Licensed by the California Bureau of Security
Fixed pricing
NASTF Certified
National Automotive Service Task Force approved
Fast mobile service
1,000+ Reviews
Five-star rated on Google, Yelp, and BBB A+
805 Special
10% OFFCODE:EZ-805-2026

🔥 Certified pro service, 10% off 🔥

OEM keys & certified programming included
REDEEM (805) 790-8162

2004 Toyota Sienna
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Toyota key typeMost Popular
2004 Toyota Sienna Transponder Key
FCC IDPart #89785-08020ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2004 Toyota Sienna Remote GQ43VT20T
FCC IDGQ43VT20TPart #89742-AE050Buttons6BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2004 Toyota Sienna Remote GQ43VT20T
FCC IDGQ43VT20TPart #89742-AE030Buttons5BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2004 Toyota Sienna Remote GQ43VT20T
FCC IDGQ43VT20TPart #89742-AE010Buttons3BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Metal Key
2004 Toyota Sienna Metal Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
On-site 2004 Toyota Sienna smart key options from EZ Car Keyz Ventura CA
Skip the Dealer Markup
Professional key, honest rate
On-site 2004 Toyota Sienna smart key options from EZ Car Keyz Ventura CA
🔧 PRO TIP
The 2004 Sienna uses a transponder key with no remote built in. Buttons are N/A on this one. It is a chip-in-the-head ignition key, period. No fob battery to swap, no lock/unlock buttons. What that means practically: if the key stops working, the fix is either a programming issue or a cut issue, not a dead battery. The other thing worth knowing is that Toyota allowed an onboard add-a-key relearn on many of these older transponder setups, but it only works when you already have one working key in hand. If you are down to zero keys, that window closes and you need a tech with the right equipment to do an all-keys-lost procedure. Get a spare cut and programmed while you still have a working key. It is a fraction of the cost of going in with nothing.
Related services: Ignition Repair · Smart Key

Licensed Toyota Key Pro vs Dealership

Licensed, certified, and reviewed - compare the credentials

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
BSIS licensed with OEM quality guaranteed
Book Service (805) 790-8162

2004 Toyota Sienna Transponder Key Replacement - Fast, Affordable & Professional

He came back from a week-long trip, walked out to the cell phone lot, and his 2004 Toyota Sienna would not start. Key went in, turned, nothing. Not even a crank. He had one key, had always had one key, and right now that one key was not doing its job.

He called the dealer. They could fit him in Thursday. It was Tuesday afternoon.

He found EZ Car Keyz and asked if I could come out to him in North Ventura. I was there inside 40 minutes.

The key blade was fine. The cut was reading correctly in the cylinder. The issue was on the transponder side. I connected to the OBD port, ran the immobilizer read, and confirmed the key's chip had dropped out of registration, probably from years of being the only key on a heavy ring taking ignition shock over and over. The car had no record of it anymore.

I re-enrolled the chip to the vehicle on site. One key, same key, back in the system. He turned it over on the first try and just sat there a second before saying anything.

Then I told him to get a spare made before he drove home. He did. Two keys leaving the lot instead of one, and he never had to load his luggage into a tow truck or sit in a dealer waiting room for two days.

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
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Fully Insured Locksmith - Hiscox Liability and Vehicle Damage Coverage
Fully Insured
Liability & vehicle damage coverage
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Also serving: Casitas Springs · College · Downtown Ventura · East Ventura

Toyota Sienna Rapid Response, Done Right

Rapid response in the field

On-site 2004 Toyota Sienna car key programming in Ventura CA
Transponder Key | Rapid On-Site Service
2004 Toyota Sienna | Ventura County
On-site 2004 Toyota Sienna car key programming in Ventura CA
2004 Toyota Sienna Transponder Key
2004 Toyota Sienna
Transponder Key | Pro Grade Service
Estimated arrival time to Ventura
Proven Timing
Rapid Arrival
Available Today
Service location Ventura
Ventura
Insured Service
805 Area
Same-Day Keys (805) 790-8162

Why Toyota Customers Trust Us

Licensed, certified, and proven

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
K
Kelly C.
Dec 2024
★★★★★

“My car keys were stolen on a cold evening and Nick drove all the way out to Santa Barbara. He got into my car, made a new key, and charged $100 less than another company. Friendly, skilled, trustworthy, and genuinely caring. Nick is a hero.”

Yelp Review
Watch real savings, real jobs62KFollowers
On-site 2004 Toyota Sienna key service review - EZ Car Keyz Ventura CA
“Real savings, real reviews.”
On-site 2004 Toyota Sienna key service review - EZ Car Keyz Ventura CA
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

How long does a Toyota dealer actually take to replace a key on a 2004 Sienna?
The programming itself is not the slow part. On an older transponder key like the one the 2004 Sienna uses, the actual chip enrollment is a relatively short process once a tech is hands-on with the car. The wait is everything around that: writing a repair order, getting into the queue for a certified tech, sourcing the correct key blank from parts, and loading the software. Owners on Toyota forums consistently report one to two hours at the dealer even with an appointment, and that is assuming the key blank is in stock. If they have to order it, you are looking at coming back on a different day entirely. A mobile locksmith handles all of it in one trip, on your schedule, in your driveway.
What exactly is a transponder key and how does it work on the 2004 Sienna?
Why does the dealer take so long if the programming itself is quick?
I bought a replacement key blank online for my 2004 Sienna. Can I program it myself at home?
My 2004 Sienna starts fine most of the time but occasionally just cranks without starting, then works on the next try. Could this be a transponder issue?
Questions? Call (805) 790-8162

Toyota Sienna Key Service Areas

Licensed and insured in every city

📍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
2004 Toyota Sienna car key service coverage in Ventura County CA
2004 Toyota Sienna car key service coverage in Ventura County CA
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