VENTURA COUNTY
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Fast Response Locksmith

2003 Ford Mustang
Key Replacement - Save vs Dealer in Ventura County

At Your Door | Home, Work, or Roadside

Available
2003 Ford Mustang Transponder Key
Transponder Key

You shouldn't have to take a day off work for a car key. Our mobile service meets you at your location on your schedule. Most appointments available same day.

CA BSIS LICENSE LCO#6792
Mobile Service No Dealer Trip At Your Location
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
2003 Ford Mustang lost key replacement options from EZ Car Keyz Thousand Oaks CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2003 Ford Mustang lost key replacement options from EZ Car Keyz Thousand Oaks CA
Key specialists
Mobile Service
Our van carries everything - no shop visit needed
Fixed pricing
On Your Schedule
Same-day appointments, 7 days a week
Fast mobile service
One-Visit Solution
Key cut and programmed in a single visit
805 Special
10% OFFCODE:EZ-805-2026

🔥 We come to you, save even more 🔥

We bring the savings to your location
REDEEM (805) 790-8162

2003 Ford Mustang
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Ford key typeMost Popular
2003 Ford Mustang Transponder Key
FCC IDPart #H72-PTButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Remote
2003 Ford Mustang Remote CWTWB1U331
FCC IDCWTWB1U331Part #15K601 5350 9352 9138Buttons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
2003 Ford Mustang
FCC IDPart #PART NUMBER: 164-R0479ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
MECHANICAL-KEY
2003 Ford Mustang MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
2003 Ford Mustang replacement key fob with no original from EZ Car Keyz Thousand Oaks CA
Skip the Dealer Markup
Professional key, honest rate
2003 Ford Mustang replacement key fob with no original from EZ Car Keyz Thousand Oaks CA
🔧 PRO TIP
The 2003 Mustang runs Ford's PATS II (Passive Anti-Theft System) with a 4D-63 Texas Instruments transponder chip inside the H72-PT key blank. No remote buttons, no battery, just a mechanical key with an embedded 80-bit encrypted chip in the head. If the PATS light (the little theft indicator in the dash) flashes rapidly when you turn the key, the system does not recognize the transponder. A solid flash for about two seconds then off means it accepted the key. If that light stays solid, the PCM and the instrument cluster module lost sync, which is a different problem entirely.
Related services: Ignition Repair · Smart Key

Skip the Dealer Trip

See why mobile key service beats the dealer trip

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
We bring the shop to you
Book Service (805) 790-8162

2003 Ford Mustang Transponder Key Replacement - Fast, Affordable & Professional

She was at a restaurant near Westlake Plaza in Thousand Oaks and her purse was gone. Someone grabbed it off the back of her chair. Car keys, house keys, wallet, phone. She borrowed the hostess's phone and called the police first, then her husband, then me.

Her 2003 Ford Mustang was sitting in the lot with zero keys. Her husband called the dealer and got the rundown: order a key, wait three to five business days, tow the car in, and they recommended rekeying the locks since the stolen key could still physically open the doors.

I got there that evening. All-keys-lost on PATS II is a different animal than adding a spare. Adding a spare means the car already trusts one key and piggybacks the new one. AKL means I wipe the entire key memory in the instrument cluster module and start fresh so the stolen transponder is erased. I used my IM608 to pull security access on the PATS module, cleared the old key data, and programmed two new H72-PT transponder keys from scratch. Cut both on site with my Lishi FO38 decode, verified the 4D-63 chip registered on each cycle.

She drove home that night. The stolen key can still physically turn the lock cylinder, but the immobilizer will kill the fuel injectors every time. Two fresh keys, old one dead to the car, done before she finished the police report.

Save vs the Dealer on Your Ford Mustang 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
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Also serving: Botanic Garden · Casa Conejo · Conejo Oaks · Dos Vientos

Ford Mustang Rapid Response, Done Right

Rapid response in the field

Lost 2003 Ford Mustang key replacement by EZ Car Keyz in Thousand Oaks CA
Transponder Key | Rapid On-Site Service
2003 Ford Mustang | Ventura County
Lost 2003 Ford Mustang key replacement by EZ Car Keyz in Thousand Oaks CA
2003 Ford Mustang Transponder Key
2003 Ford Mustang
Transponder Key | Made at Your Door
Estimated arrival time to Thousand Oaks
We Come to You
Rapid Arrival
Available Today
Service location Thousand Oaks
Thousand Oaks
We Come Here
805 Area
Same-Day Keys (805) 790-8162

What Mobile Service Feels Like

Reviews from customers who stayed home

R
Rick R.
Apr 2021
★★★★★

“Niv showed up, did his thing, and just like that I had two new keys for a fraction of what the dealership quoted. I have zero reservations recommending him to anyone who needs car keys replaced.”

Google Review
f
frankborja25
Dec 2019
★★★★★

“We had one broken key for our Honda Civic and one working key for our Lexus. Tim came out and cut three remote car keys at a great price. All keys worked perfectly. Professional, courteous, and highly recommended.”

Google Review
I
Incognitomlo88
Jul 2025
★★★★★

“Tim was GREAT. I honestly swear he must have had my keys made before he even showed up. The entire process was insanely fast, from the initial phone call to having the keys in my hand. No one will beat the pricing, efficiency, or outstanding service.”

Google Review
Watch real savings, real jobs62KFollowers
Customer review after losing 2003 Ford Mustang key - EZ Car Keyz Thousand Oaks CA
“Real savings, real reviews.”
Customer review after losing 2003 Ford Mustang key - EZ Car Keyz Thousand Oaks CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Ford Mustang Mobile Service FAQ

Real costs, no dealer surprises

I lost all the keys to my 2003 Ford Mustang. Can you still make new ones?
Yep. All-keys-lost on the 2003 Mustang is a standard job for us. The PATS II module lives inside the instrument cluster, and I pull security access through the OBD-II port to wipe the old key data and write new 4D-63 transponder keys from scratch. Every previously programmed key gets erased, so a lost or stolen key will not start the engine anymore. The whole thing takes about 20 to 30 minutes on site. No tow, no waiting on a parts order.
Is a locksmith cheaper than the Ford dealer for a 2003 Mustang key?
Does your price include cutting and programming the transponder?
My 2003 Mustang cranks but won't start, and the theft light is flashing. What's going on?
Can I program a spare transponder key myself on a 2003 Mustang?
Questions? Call (805) 790-8162

Ford Mustang Key Service Areas

Mobile service across the full region

📍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
Emergency 2003 Ford Mustang locksmith service area in Ventura County CA
Emergency 2003 Ford Mustang locksmith service area in Ventura County CA
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Ford Mustang car key replacement video
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Ford Mustang Key Made at Your Location

Skip the dealer trip. We bring everything to cut and program your key where you are.

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