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Fast Response Locksmith

2004 BMW 3 Series
Key Replacement - Save vs Dealer in Ventura County

BBB A+ Rated | Verified Credentials

Available
2004 BMW 3 Series Remote Head Key
Remote Head 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
Licensed Since 2016 NASTF Approved Damage Coverage
Fast Response15-25
min arrival
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Rapid response 2004 BMW 3 Series key details from EZ Car Keyz Moorpark CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Rapid response 2004 BMW 3 Series key details from EZ Car Keyz Moorpark CA
Key specialists
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Liability coverage and background-checked technicians
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Over 10,000 keys made across the region
805 Special
10% OFFCODE:EZ-805-2026

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2004 BMW 3 Series
Key Options

Dealer-grade key for a fair, honest price

Remote Head Key
Most popular BMW key typeMost Popular
2004 BMW 3 Series Remote Head Key LX8FZV
FCC IDLX8FZVPart #6955750Buttons3BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Transponder Key
2004 BMW 3 Series Transponder Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
2004 BMW 3 Series
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Instant 2004 BMW 3 Series key fob options from EZ Car Keyz Moorpark CA
Skip the Dealer Markup
Professional key, honest rate
Instant 2004 BMW 3 Series key fob options from EZ Car Keyz Moorpark CA
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The 2004 3 Series (E46) runs the EWS3 immobilizer tied to the CAS module predecessor, talking to the MS45 or MSS54 DME over a serial link. If you've been jump-starting the car and it cranks but won't fire, the EWS module likely lost sync with the DME. Repeated low-voltage events corrupt the stored ISN (individual serial number) alignment between the two. A tech can resync with bench tools, but every dead-battery episode makes the next one harder to fix.
Related services: Ignition Repair · Smart Key

Licensed, Insured, and Reviewed

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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 BMW 3 Series Remote Head Key Replacement - Fast, Affordable & Professional

A Euro shop near Rustic Canyon Golf Course in Moorpark had a 2004 3 Series sitting dead in the bay. Another locksmith had come out for an all-keys-lost job, attempted an EWS read, hit an error mid-write, and walked away. The module was stuck in a fault state. The car would crank all day but the DME wouldn't see authorization. The shop called me after the first guy stopped returning their calls.

I brought my ACDP bench tool and pulled the EWS3 module from its spot behind the glovebox. Read the EEPROM, found the corruption right in the key data block. The backup ISN was still intact, so I patched the damaged bytes, wrote it back clean, and generated a fresh key profile matched to part number 6955750 with the right rolling code seed.

The 3-button remote head key, FCC ID LX8FZV, went in the ignition and the car fired on the first turn. I cycled the remote lock and unlock from 30 feet, checked the trunk release, and let it idle while I cleared the EWS tamper fault with INPA.

Took about two hours, which is longer than a normal key job. But the alternative was a flatbed to BMW, a possible EWS module replacement, and the car sitting there for a week or more. I showed the shop guys what the corrupted EEPROM dump looked like versus the corrected one so they'd recognize it next time.

Save vs the Dealer on Your BMW 3 Series Key

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

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BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
NASTF Certified Automotive Locksmith - Vehicle Security Professional
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Fully Insured
Liability & vehicle damage coverage
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Also serving: Downtown Moorpark · Moorpark College Area · Moorpark Home Acres · Mountain Meadows

BMW 3 Series Rapid Response, Done Right

Rapid response in the field

Quick turnaround 2004 BMW 3 Series car key by EZ Car Keyz in Moorpark CA
Remote Head Key | Rapid On-Site Service
2004 BMW 3 Series | Ventura County
Quick turnaround 2004 BMW 3 Series car key by EZ Car Keyz in Moorpark CA
2004 BMW 3 Series Remote Head Key
2004 BMW 3 Series
Remote Head Key | Pro Grade Service
Estimated arrival time to Moorpark
Proven Timing
Rapid Arrival
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Service location Moorpark
Moorpark
Insured Service
805 Area
Same-Day Keys (805) 790-8162

What Trust Looks Like in Reviews

1,000+ customers who trusted us

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
T
Tommy M.
Dec 2023
★★★★★

“Tim went above and beyond. I struggled all day trying to program a new FOB and nothing worked. Tim helped me patiently, even recommending cheaper options since I was on a tight budget. He eventually came all the way to Ojai late at night and fixed everything.”

Yelp Review
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Quick response locksmith review for 2004 BMW 3 Series key - EZ Car Keyz Moorpark CA
“Real savings, real reviews.”
Quick response locksmith review for 2004 BMW 3 Series key - EZ Car Keyz Moorpark CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

BMW 3 Series Mobile Service FAQ

Real costs, no dealer surprises

Do you use OEM or aftermarket keys on the 2004 BMW 3 Series?
OEM-spec keys matched to part number 6955750, correct blade profile (HU92), and the right PCF7935 transponder chip for the EWS3 system. Cheap aftermarket BMW keys from Amazon are a known problem on Bimmerforums and E46Fanatics. Owners report remote range dying within months, shell seams cracking, and transponder chips that intermittently fail to authenticate. Some won't program at all. I carry keys I've tested and verified on E46 vehicles specifically because a bad blank can turn a 45-minute job into a nightmare. You get a key that works and holds up.
How long will a properly programmed replacement key last?
What if the new key stops working after a few weeks?
My 2004 3 Series shows "EWS Tampering" or won't crank after a battery change. What happened?
Can I program a spare key to my E46 myself using the existing key?
Questions? Call (805) 790-8162

BMW 3 Series Key Service Areas

Same licensed team, 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
Rapid dispatch 2004 BMW 3 Series locksmith area in Ventura County CA
Rapid dispatch 2004 BMW 3 Series locksmith area in Ventura County CA
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BMW 3 Series car key replacement video
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Your BMW 3 Series Key in Expert Hands

Eight years of proven service across Moorpark. Licensed, insured, and reviewed by customers.

2004 BMW 3 Series car key done in minutes by EZ Car Keyz Moorpark CA
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