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Fast Response Locksmith

2003 BMW M3
Key Replacement - Save vs Dealer in Ventura County

Rapid Mobile Service | No Waiting

Available
2003 BMW M3 Remote Head Key
Remote Head Key

Don't wait 3-5 business days at the dealership. EZ Car Keyz gets you back on the road fast. We arrive quickly and have your new key working before your coffee gets cold.

CA BSIS LICENSE LCO#6792
Fast Arrival One Visit, Done No Delays
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
2003 BMW M3 all keys lost solutions from EZ Car Keyz Fillmore CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2003 BMW M3 all keys lost solutions from EZ Car Keyz Fillmore 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

🔥 Get your key today for less 🔥

Savings applied during your appointment
REDEEM (805) 790-8162

2003 BMW M3
Key Options

Dealer-grade key for a fair, honest price

Remote Head Key
Most popular BMW key typeMost Popular
2003 BMW M3 Remote Head Key LX8FZV
FCC IDLX8FZVPart #6955750Buttons3BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Transponder Key
2003 BMW M3 Transponder Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
New 2003 BMW M3 key fob when all keys lost from EZ Car Keyz Fillmore CA
Skip the Dealer Markup
Professional key, honest rate
New 2003 BMW M3 key fob when all keys lost from EZ Car Keyz Fillmore CA
🔧 PRO TIP
The 2003 M3 runs the EWS3 (Elektronische Wegfahrsperre 3) immobilizer, not CAS. The EWS3 module, part number 61.35-6 905 667, talks to the DME (Siemens MSS54 on the S54 engine) through a rolling-code handshake. Your remote head key, FCC ID LX8FZV, holds a PCF7935 transponder chip with a 44-series ID. If you get a used key cheap online, the transponder is married to someone else's EWS. It will turn the ignition but the DME kills fuel and spark. Dead key feel, live key problem.
Related services: Ignition Repair · Smart Key

Done Fast vs Dealer Delays

One hour vs one week - compare

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
Same-day service vs dealer wait times
Book Service (805) 790-8162

2003 BMW M3 Remote Head Key Replacement - Fast, Affordable & Professional

Got a call from a guy near the Fillmore Towne Theatre around 11 at night. His 2003 M3, the E46 with the S54, was sitting in his driveway and the only key he had just stopped turning past position two. Engine crank, nothing. Dash gave him the EWS tamper dot, that little yellow car-with-a-key icon.

He had already called the dealer earlier that week. They told him to tow it in during service hours and quoted him a wait of almost two weeks for a new key order plus coding. He figured the car was stuck until then.

I drove out to Fillmore with a replacement remote head key blank, part number 6955750, already in my kit. Connected to the OBD-II port, pulled the EWS3 module data, read the ISN sync between the EWS and his MSS54 DME, and wrote the new PCF7935 transponder to an open key slot. Cut the HU92 blade on my mobile machine using the code from the EWS dump.

The part that made the job feel real was when he turned the key and the S54 caught. He just sat there with his hands on the wheel for a second, not going anywhere, just listening to it idle. I get that. That inline six at idle sounds like money.

Whole thing took about 40 minutes on a dark street. No tow, no two-week wait, for way less than the dealer quoted him.

Save vs the Dealer on Your BMW M3 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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Verified & backed by Google
Also serving: Downtown Fillmore · Heritage Valley · North Fillmore

BMW M3 Rapid Response, Done Right

Rapid response in the field

2003 BMW M3 key made with no spare by EZ Car Keyz Fillmore CA
Remote Head Key | Rapid On-Site Service
2003 BMW M3 | Ventura County
2003 BMW M3 key made with no spare by EZ Car Keyz Fillmore CA
2003 BMW M3 Remote Head Key
2003 BMW M3
Remote Head Key | Done in Minutes
Estimated arrival time to Fillmore
Fast Dispatch
Rapid Arrival
Available Today
Service location Fillmore
Fillmore
Rapid Service Zone
805 Area
Same-Day Keys (805) 790-8162

What Same-Day BMW Service Sounds Like

What quick turnaround sounds like

K
Kim S.
Jul 2025
★★★★★

“This is the only locksmith anyone should ever call. I am still shocked at how fast he arrived and the price was hundreds less than other quotes I received. Honest, professional, and extremely efficient.”

Google Review
B
Bradley B.
May 2024
★★★★★

“Locked out on a weekend night and everyone else wanted $300+. EZ Car Keyz sent Roman late at night for much less. He worked for over an hour and did not give up until the door opened. They even made a new key on the spot.”

Yelp Review
M
Marianne S.
Dec 2022
★★★★★

“I had two Subaru key fobs made and Marco provided excellent service. He stayed persistent through multiple part orders to make sure everything was correct. Very thorough, punctual, and great communication throughout.”

Google Review
Watch real savings, real jobs62KFollowers
Emergency 2003 BMW M3 key replacement review - EZ Car Keyz Fillmore CA
“Real savings, real reviews.”
Emergency 2003 BMW M3 key replacement review - EZ Car Keyz Fillmore CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

BMW M3 Mobile Service FAQ

Real costs, no dealer surprises

Why is a 2003 BMW M3 key replacement so expensive at the dealer?
The EWS3 immobilizer on the E46 M3 uses a rolling-code exchange between the PCF7935 transponder in your key and the DME (Siemens MSS54 for the S54 engine). Each key's ID is married to your VIN-specific EWS module, part number 61.35-6 905 667. The dealer has to order a key blank tied to your VIN, cut the HU92 blade, then code the transponder to an open EWS slot and verify the ISN alignment with the DME. They charge for the part, the programming labor, and sometimes a separate diagnostic fee. A mobile locksmith does the same sync for a fraction of what they want.
What is a remote head key and how is it different from a regular BMW key?
How does a mobile locksmith handle 2003 M3 key replacement compared to the BMW dealer?
My E46 M3 cranks but won't start and the EWS light is on. Is my key bad?
Can I buy a used BMW key on eBay and have it programmed to my 2003 M3?
Questions? Call (805) 790-8162

BMW M3 Key Service Areas

Rapid service in your 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
Lost 2003 BMW M3 key service coverage in Ventura County CA
Lost 2003 BMW M3 key service coverage in Ventura County CA
Stranded in Ventura County? We respond fast

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BMW M3 car key replacement video
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2003 BMW M3 Key in Under an Hour

We dispatch fast and finish faster. Most keys are cut and programmed in 20-45 minutes.

All 2003 BMW M3 keys lost? Call EZ Car Keyz Fillmore CA
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