BMW M3 G80 M4 G82 Engine Control Unit 5A40A24 2x Key BDC SET
DME ECU | BDC Module | 2x Key Fobs | Part #5A40A24
This is a complete, synchronized Security & Engine Control Set for the BMW G80 M3 and G82 M4 equipped with the S58 engine. Because modern BMW security (Comfort Access and Immobilizer) is cryptographically bound across multiple modules, purchasing a “matched set” is the only way to swap an engine or major electronics without requiring a specialized (and expensive) FEMTO unlock or cloud-based factory synchronization. BMW M3 G80 M4 G82 Engine Control Unit 5A40A24 2x Key BDC SET
Technical Specifications
| Component | Detail |
| Engine ECU (DME) | Part #5A40A24 (Bosch/BMW S58 Control Unit) |
| Body Domain Controller | BDC3 (Main Gateway & Security Module) |
| Key Fobs | 2x Original M-Performance Keys (Programmed to BDC) |
| Model Compatibility | BMW M3 (G80/G81), M4 (G82/G83), X3M (F97), X4M (F98) |
| Engine Code | S58B30A / S58B30B (3.0L Twin-Turbo Inline-6) |
| Transmission | Compatible with 8-Speed ZF Automatic or 6-Speed Manual |
Why You Need the Full “Set”
In the G-Chassis architecture, the vehicle’s ISN (Individual Serial Number) is shared between the DME (Engine Computer) and the BDC (Body Module).
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Plug & Play Capability: By swapping all three components (ECU, BDC, and Keys) simultaneously from the same donor vehicle, you bypass the “anti-theft” lockout. This allows the vehicle to start immediately without a dealer-level re-match.
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Component 5A40A24: This specific ECU part number is widely used in the 2021–2024 S58 production run. It is the high-security Bosch unit that typically requires a “bench unlock” if you were to tune it.
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BDC Module: This unit acts as the gatekeeper for all interior electronics, lighting, and keyless entry (Comfort Access).
Installation & Coding Notes
Professional Warning:
VIN Mismatch: While the car will start and run with this set, your vehicle will still show a “VIN Mismatch” in diagnostic scans (like ISTA). To fix this, you may need a coder to change the VIN in the BDC’s EEPROM.
Mileage: The vehicle’s mileage is stored in the BDC. If the donor BDC has higher mileage than your car, your odometer will automatically jump forward to match the donor.
Donor Condition: Always ensure the donor car was not in a flood. BDC modules are located in the passenger footwell and are highly sensitive to water damage.
Oliver Hughes (verified owner) –
Used for product page structure testing.
Grace Wilson (verified owner) –
Improved visibility effect shown.
Lily Anderson (verified owner) –
Gear shifting appears smooth and stable.
Amelia Brooks (verified owner) –
Good stability shown in design view.
Joseph Taylor (verified owner) –
Engine performance appears strong and stable.
Oliver Mitchell (verified owner) –
Used for product interface.
Lily Anderson (verified owner) –
No issues shown in system view.
Penelope Adams (verified owner) –
Gearbox performance appears smooth.
Joseph Taylor (verified owner) –
Reliable stop behavior in design.
Aaron Bennett (verified owner) –
Engine performance appears strong in this demo setup.
Brooklyn Foster (verified owner) –
Headlights appear bright and sharp.
Henry Foster (verified owner) –
Wheels appear strong and stylish.
Stella Parker (verified owner) –
Clean design integration shown.
Chloe Wilson (verified owner) –
BMW Gearbox
Harper Evans (verified owner) –
Bumper looks modern and durable.
Nathan Scott (verified owner) –
Sample review text.
Ava Mitchell (verified owner) –
Wheels appear strong and premium.
Natalie Moore (verified owner) –
BMW Headlights
Penelope Mitchell (verified owner) –
Placeholder for UI testing.
Chloe Wilson (verified owner) –
Brakes respond instantly in simulation.
Michael Harris (verified owner) –
Placeholder text.
Liam Walker (verified owner) –
UI sample data only.
Grace Adams (verified owner) –
Transmission runs smoothly in demo.
Evelyn Clark (verified owner) –
Strong product visualization.
Andrew Taylor (verified owner) –
Smooth and well-controlled shifting.
Benjamin Morgan (verified owner) –
Very polished presentation.
Isabella Walker (verified owner) –
BMW Headlights
Matthew White (verified owner) –
BMW Brake System
Benjamin Morgan (verified owner) –
Clean finish and structure.
Mia Reynolds (verified owner) –
Design aligns well with vehicle structure.
Hannah Green (verified owner) –
Clean and modern styling overall.
Oliver Scott (verified owner) –
Clean and modern styling overall.
Benjamin Morgan (verified owner) –
Very smooth visual performance.