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2003 Infiniti M45
Key Replacement - Save vs Dealer in San Diego

Lost Every Key? | We Start From Scratch

Available
2003 Infiniti M45 MECHANICAL-KEY
MECHANICAL-KEY

All keys lost is our specialty. While the dealer would require a tow and days of waiting, we arrive at your location and have a new key cut and programmed on the spot.

CA BSIS LICENSE LCO#6792
Locked Out? No Stress Keys From Zero Fast Response
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
2003 Infiniti M45 lost key replacement options from EZ Car Keyz Poway CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • San Diego, CA
15+
Yrs Exp
2003 Infiniti M45 lost key replacement options from EZ Car Keyz Poway CA
Key specialists
Zero Keys Needed
We program directly to your vehicle's computer
Fixed pricing
On-Site Key Cutting
New key cut from vehicle codes, not from a copy
Fast mobile service
Fast Recovery
Back on the road in 30-45 minutes from arrival
619 Special
10% OFFCODE:EZ-619-2026

🔥 Rescue key service, 10% off 🔥

Covers lockouts, lost keys & spares
REDEEM (619) 876-1271

2003 Infiniti M45
Key Options

Dealer-grade key for a fair, honest price

MECHANICAL-KEY
Most popular Infiniti key typeMost Popular
2003 Infiniti M45 MECHANICAL-KEY
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
2003 Infiniti M45 replacement key fob with no original from EZ Car Keyz Poway CA
Skip the Dealer Markup
Professional key, honest rate
2003 Infiniti M45 replacement key fob with no original from EZ Car Keyz Poway CA
Related services: Ignition Repair · Smart Key

Lost Infiniti Key: Tow vs Mobile Fix

Stranded? Compare response times

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
All keys lost is no problem for us
Book Service (619) 876-1271

2003 Infiniti M45 MECHANICAL-KEY Replacement - Fast, Affordable & Professional

People lose all their Infiniti keys more often than you'd expect. The most common story isn't dramatic. They bought the car used with one fob, planned to get a spare, and years later that single fob fails.

A young marketing analyst at the certified pre-owned dealer in Poway had that exact story. She bought a 2003 Infiniti M45 CPO with one fob. The salesperson told her to get a spare at her convenience. Two years later the fob cracked at the seam and moisture got in. Zero working keys and a car she needed for her commute.

I used my VVDI2 to read the transponder data from the broken fob since the chip was still intact inside the cracked housing. That saved time because I didn't need a full AKL erase. I cut two emergency blades, built two new fobs with the cloned data, and tested both thoroughly. Her smart key, FCC ID , was a 3-button fob rebuilt into fresh shells. I showed her the chip from the cracked key so she could see it was still good.

She went from zero keys to two in about 40 minutes. Total was around $95. A full AKL would have cost more, and the dealer wanted $200 regardless. Even a broken fob isn't the same as no fob. Bring the pieces.

Save vs the Dealer on Your Infiniti M45 Key

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

Get Pricing (619) 876-1271 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: Garden Road · Lake Poway · Old Poway · Poway Business Park

Infiniti M45 Rapid Response, Done Right

Rapid response in the field

Lost 2003 Infiniti M45 key replacement by EZ Car Keyz in Poway CA
MECHANICAL-KEY | Rapid On-Site Service
2003 Infiniti M45 | San Diego
Lost 2003 Infiniti M45 key replacement by EZ Car Keyz in Poway CA
2003 Infiniti M45 MECHANICAL-KEY
2003 Infiniti M45
MECHANICAL-KEY | Rescue Key
Estimated arrival time to Poway
Priority ETA
Rapid Arrival
Available Today
Service location Poway
Poway
Help Is Close
619 Area
Same-Day Keys (619) 876-1271

Lockout to Five-Star Review

Lost key panic turned to five-star praise

A
Alexx C.
Dec 2025
★★★★★

“My key fob stopped working while I was at Oxnard Harbor and I thought I was going to need a tow. EZ Car Keyz showed up fast, programmed a new fob, checked everything carefully, and made sure the car was fully functional before leaving.”

Google Review
M
Mark F.
Feb 2024
★★★★★

“Needed a spare car key made and chose EZ Car Keyz based on their reviews. The reviews were right. They gave me the best price, responded quickly to all my questions, came to my workplace, cut the keys on site, and finished fast.”

Yelp Review
S
Sonia V.
Feb 2024
★★★★★

“Marco came out quickly, cut and programmed a new BMW key fob fast, and was extremely polite and professional.”

Yelp Review
Watch real savings, real jobs62KFollowers
Customer review after losing 2003 Infiniti M45 key - EZ Car Keyz Poway CA
“Real savings, real reviews.”
Customer review after losing 2003 Infiniti M45 key - EZ Car Keyz Poway CA
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Infiniti M45 Mobile Service FAQ

Real costs, no dealer surprises

My key shell is cracking. Can you fix it without reprogramming?
Yes. Infiniti intelligent key shells, especially the shared Nissan/Infiniti egg-style fobs used since 2006, are known for cracking around the key ring bridge and emergency blade area. We can transfer your original circuit board and transponder chip into a new shell and cut a fresh emergency blade. No reprogramming is needed as long as the original electronics move over intact. One G35 owner asked about buying just a shell for this exact reason. It is a common and inexpensive fix.
What is a MECHANICAL-KEY?
My Infiniti says key not detected or wrong key. What do I do?
What is the FCC ID for the 2003 Infiniti M45 key?
Is all-keys-lost more expensive than a regular replacement?
Questions? Call (619) 876-1271

Infiniti M45 Key Service Areas

Stranded in any city? We come to you

📍San Diego County
San Diego County service area map
619 LOCAL LOCKSMITH
need a key? 🔑
San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado
Emergency 2003 Infiniti M45 locksmith service area in San Diego County CA
Emergency dispatch throughout San Diego County

Lost your keys? We’ll come to wherever the car is

Get Help Now (619) 876-1271
Filmed on Location
Infiniti M45 car key replacement video
113K+ Chose EZ Car Keyz

Every Infiniti M45 Key Lost? We Handle It

Lost your only key? Don't panic. We specialize in all-keys-lost and arrive ready to program.

Lost your 2003 Infiniti M45 key? Call EZ Car Keyz Poway CA now
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