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2003 Nissan Maxima
Key Replacement - Save vs Dealer in Ventura County

Professional Keys | Honest Pricing

Available
2003 Nissan Maxima Transponder Key
Transponder Key

Dealerships charge a premium because they can. We don't. Same key, same programming, same quality - just without the markup. Call for an honest quote with no hidden fees.

CA BSIS LICENSE LCO#6792
Skip the Dealer Cost No Dealer Markup Fair Fixed Price
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
2003 Nissan Maxima lost key replacement options from EZ Car Keyz Oxnard CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2003 Nissan Maxima lost key replacement options from EZ Car Keyz Oxnard CA
Key specialists
Save 40-60%
Same OEM-quality key, fraction of the dealer price
Fixed pricing
Fixed Pricing
The quote on the phone is what you pay. Period.
Fast mobile service
Free Mobile Service
No trip fees, no towing costs - service included
805 Special
10% OFFCODE:EZ-805-2026

🔥 Your key for less, right now 🔥

Applies to any key replacement service
REDEEM (805) 790-8162

2003 Nissan Maxima
Key Options

Dealer-grade key for a fair, honest price

Transponder Key
Most popular Nissan key typeMost Popular
2003 Nissan Maxima Transponder Key
FCC IDPart #K-NI02TButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
MECHANICAL-KEY
2003 Nissan Maxima MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
2003 Nissan Maxima replacement key fob with no original from EZ Car Keyz Oxnard CA
Skip the Dealer Markup
Professional key, honest rate
2003 Nissan Maxima replacement key fob with no original from EZ Car Keyz Oxnard CA
🔧 PRO TIP
The 2003 Maxima runs Nissan's NATS5 (Nissan Anti-Theft System, generation 5) with a fixed 4D60 transponder chip in the key head. A weak 12-volt car battery is one of the most common reasons these throw a blinking security light on the dash. The BCM and the ring antenna around the ignition cylinder need stable voltage to read that 4D60 chip. If your key issues showed up after a jump start or a long sit, charge or replace the 12V battery before assuming the key is bad.
Related services: Ignition Repair · Smart Key

Real Savings, Same Quality

Side by side - our price vs dealer markup

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
Save hundreds without sacrificing quality
Book Service (805) 790-8162

2003 Nissan Maxima Transponder Key Replacement - Fast, Affordable & Professional

A couple on a road trip got stuck at a motel near McGrath State Beach in Oxnard. Their only key for a 2003 Maxima just stopped turning the ignition. The security light on the cluster was blinking steady, and the engine would crank for a second then cut out. Classic NATS rejection.

They called the Nissan dealer. Earliest opening was the next afternoon, and they were told to have it towed in first. That was going to eat most of a day plus the tow bill on top of the key work.

They found me that evening.

I met them in the motel lot. The 2003 Maxima uses NATS5 with a 4D60 transponder chip, no remote buttons, just a straight transponder key with the NSN14 blade profile, part number K-NI02T. I pulled pin data through the OBD port using my programmer to access the BCM, read the NATS module, and registered a new 4D60 chip to the immobilizer. Cut the blade on my machine in the van to match their locks.

The part that took the longest was letting the car sit with the key in the on position for the NATS relearn cycle. About 20 minutes total from showing up to handing over a working key.

The guy turned the ignition, the security light went solid then off, and the engine caught. He just sat there for a second with his hands on the wheel like he was making sure. His wife was already looking up where to eat dinner.

One visit, same night, for a fraction of what the dealer route would have cost.

Save vs the Dealer on Your Nissan Maxima 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: Blackstock · Carriage Square · Channel Islands Harbor · College Estates

Nissan Maxima Rapid Response, Done Right

Rapid response in the field

Lost 2003 Nissan Maxima key replacement by EZ Car Keyz in Oxnard CA
Transponder Key | Rapid On-Site Service
2003 Nissan Maxima | Ventura County
Lost 2003 Nissan Maxima key replacement by EZ Car Keyz in Oxnard CA
2003 Nissan Maxima Transponder Key
2003 Nissan Maxima
Transponder Key | Programmed for Less
Estimated arrival time to Oxnard
Quick & Affordable
Rapid Arrival
Available Today
Service location Oxnard
Oxnard
Best Rate Here
805 Area
Same-Day Keys (805) 790-8162

What Fair Nissan Pricing Sounds Like

Happy customers who saved hundreds

G
Guillermo C.
Dec 2025
★★★★★

“I called EZ Car Keyz to unlock my truck, make a key, and sync a new key fob. They were at my location within minutes and handled everything fast and friendly. Prices were great and the service was excellent.”

Google Review
G
Gregorio P.
May 2021
★★★★★

“Steve was incredibly helpful when I lost my car keys. He came out the exact same day and I only waited about 30 minutes. I really needed to get to work and he completely saved me.”

Google Review
A
Antoine M.
Dec 2025
★★★★★

“I am very pleased with the value of the service I received from Marco at EZ Car Keyz. They arrived extremely fast, opened my door in no time, and the price was right on point.”

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

Nissan Maxima Mobile Service FAQ

Real costs, no dealer surprises

Do I need to tow my 2003 Nissan Maxima to a shop for key replacement?
No. I come to you. That is the whole point. I show up wherever the car is in Oxnard, whether that is your driveway near McGrath State Beach or a parking lot across town. Nissan dealers need the car at their service bay so they can hook up their CONSULT-II or CONSULT-III tool to talk to the NATS module. That means a tow if you have no working key. I carry everything in my van: the K-NI02T key blank, my cutting machine, and programming hardware that reads the BCM and registers the new 4D60 chip right at the car.
What actually happens during mobile key replacement for my 2003 Maxima?
What do I need to have ready when you arrive to make my key?
My security light keeps blinking and the engine cuts out after cranking. Is my key bad?
Can I program a new transponder key for my 2003 Maxima myself?
Questions? Call (805) 790-8162

Nissan Maxima Key Service Areas

Save vs the dealer in your neighborhood

📍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 Nissan Maxima locksmith service area in Ventura County CA
Emergency 2003 Nissan Maxima locksmith service area in Ventura County CA
Stranded in Ventura County? We respond fast

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Nissan Maxima car key replacement video
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Nissan Maxima Key at a Fair Price

Same dealer-quality key at a fraction of the cost. Fixed pricing, no hidden charges.

Lost your 2003 Nissan Maxima key? Call EZ Car Keyz Oxnard CA now
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