Everything you need know about BMW key replacement; Keyless Entry, Smart Keys (Proximity) and Programming.

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bmw key replacement in southern maine

Need a new BMW key? Whether you're dealing with a lost key, need a spare, or have a key that won't start the car, Locksmith LS offers expert BMW key replacement and programming throughout Portland and all of Southern Maine. We support all BMW models and anti-theft systems — including EWS, CAS, FEM, and BDC.

We come to you. Fast. Professional. No towing needed.

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✅ Supported BMW Anti-Theft Systems

BMW uses several generations of immobilizer systems, each requiring a different programming method:

• EWS (Driveaway Protection System) – used from 1993 through early 2000s

• CAS (Car Access System) – used on mid-2000s to early 2010s models

• FEM / BDC (Front Electronic Module / Body Domain Controller) – used on most late-model BMWs

All of these systems require the key to be programmed specifically to the car using specialized tools.

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🔐 How the BMW Immobilizer Works

Every BMW key contains a transponder chip that communicates with a ring antenna near the ignition. When the key is inserted or the start button is pressed, the car verifies the chip — if it matches, the engine will start.

No battery is needed for this function — power and data transfer occur inductively, like a transformer.

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❓ Frequently Asked Questions

Does a BMW have an immobilizer?
Yes — all BMWs since the 1990s include anti-theft systems like EWS, CAS, or FEM/BDC.

Does a BMW key require programming?
Yes. Every key must be programmed to match your specific car’s immobilizer system.

Can I program a BMW key myself?
No. Full programming requires special tools and knowledge. However, for older BMWs with the EWS system, you may be able to program the remote functions only (lock/unlock).
▶️ Watch a video on how to program the remote portion

Can I synchronize a BMW key I ordered from the dealer?
Yes — if you purchased a genuine dealer key by VIN, it may need syncing to your car.
▶️ Here’s how to sync a dealer key

Where can I get a BMW key replacement?
Only an authorized locksmith or dealership can cut and program BMW keys. Locksmith LS is equipped to handle all systems on-site.

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🛠️ BMW Door Lock Repair & Worn Key Services

If your key turns with difficulty or won’t operate the door lock, the issue may be a worn key or a damaged door lock cylinder. We offer:

• On-site key decoding and recutting for worn or broken keys

• Door lock cylinder repair for jammed or damaged locks

• Replacement of mechanical key blades for comfort access remotes

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💰 BMW Key Replacement Cost

• Standard laser-cut key: Starting at $325 for e keys. 

• Smart key / proximity fob: Starting at $580

• Door lock or worn key services: Varies — call for quote
  Exact cost depends on your model, year, and system type. Call now for a quick quote.

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📍 Service Area – Southern Maine Cities We Serve

We provide mobile BMW locksmith services in the following areas:

• Portland

• South Portland

• Westbrook

• Scarborough

• Cape Elizabeth

• Saco

• Biddeford

• Old Orchard Beach

• Falmouth

• Yarmouth

• Gorham

• Windham

• Cumberland

• Buxton

• Wells*

• Kennebunk*

• Kennebunkport*

• Sanford*

• Lebanon*

• Arundel

• Gray

• New Gloucester*

• Freeport

• Brunswick*

• Topsham*

• Bath*

• Limington*

• Hollis*

• Lyman*

• Dayton*

• North Berwick*

• Berwick*

• Eliot*

• Kittery*

• Ogunquit*

• York*

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Don’t see your town listed? or Town is marked with a star(*)?
Contact us — we may still be able to help or provide a custom quote for travel outside our core service area.

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🚗 Supported BMW Models

We offer key replacement, programming, and remote services for nearly every BMW model on the road today, including:

• BMW 1 Series (E81, E82, F20, F21, F40)

• BMW 2 Series (F22, F23, F44, G42)

• BMW 3 Series (E36, E46, E90, F30, G20)

• BMW 4 Series (F32, F33, G22, G23)

• BMW 5 Series (E39, E60, F10, G30)

• BMW 6 Series (E63, F06, F12, G32 GT)

• BMW 7 Series (E38, E65, F01, G11)

• BMW 8 Series (G14, G15, G16)

• BMW X Series:

  • X1 (E84, F48)

  • X2 (F39)

  • X3 (E83, F25, G01)

  • X4 (F26, G02)

  • X5 (E53, E70, F15, G05)

  • X6 (E71, F16, G06)

  • X7 (G07)

• BMW Z Series (Z3, Z4 — E85, E89, G29)

• BMW M Series (M2, M3, M4, M5, M6, M8, X3M, X5M, X6M)

Have a classic or less common model? Contact us — we’re familiar with nearly every BMW platform and can assist with older E-series, gray market imports, or special editions.

 

 

📞 Call Now for BMW Key Service

If you need a BMW key replacement in Southern Maine, Locksmith LS is your go-to mobile expert. We come to you, cut and program your key on-site, and get you back on the road.

Call (207) 200-5170 now for a free quote or to schedule service.

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