Every control module on the 2022-2026 BMW i4 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Battery Management System / High Voltage Battery Control (BMS/SME) 8.0 hr R&R security gateway +2.0 hr ▸ programming details
📍 Integrated with high-voltage battery pack, under floor
🔧 BMW ISTA + ICOM Next
⚠️ High-voltage battery management; battery pack removal required; high-voltage certification mandatory; dealer-only repair; battery registration and capacity coding required
Electronic Transmission Control / Transmission Control Unit (EGS/TCU) 3.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Integrated with single-speed transmission, under vehicle center
🔧 BMW ISTA + ICOM Next
⚠️ Single-speed transmission; module integrated with drive unit; high-voltage safety protocols required
Integrated Heating/Air Conditioning (IHKA) 2.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind center dashboard, above transmission tunnel
🔧 BMW ISTA + ICOM Next
⚠️ Heat pump system on electric vehicle; refrigerant recovery required; climate zone coding needed
Digital Motor Electronics (DME) 2.5 hr R&R security gateway +1.5 hr ▸ programming details
📍 Under rear cargo floor, left side near motor
🔧 BMW ISTA + ICOM Next
⚠️ ISN synchronization with CAS required; high-voltage disconnect mandatory; dealer authentication required for programming
Electric Power Steering (EPS) 2.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Steering column, under dashboard
🔧 BMW ISTA + ICOM Next
⚠️ Steering angle sensor calibration mandatory after replacement; VIN coding required
Electric Motor Electronics / Power Distribution Module (EME/PDM) 2.0 hr R&R security gateway +1.0 hr ▸ programming details
📍 Under rear cargo floor, right side near motor
🔧 BMW ISTA + ICOM Next
⚠️ High-voltage power distribution; not a fuel pump (EV); high-voltage disconnect mandatory; dealer programming required
DC/DC Converter Control Unit (DCDC) 2.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Under rear cargo floor, center near motor
🔧 BMW ISTA + ICOM Next
⚠️ High-voltage to 12V conversion; high-voltage disconnect mandatory; dealer programming required
Head Unit / Central Information Display (HU/NBT EVO) 2.0 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind center dashboard screen
🔧 BMW ISTA + ICOM Next
⚠️ iDrive 8 system; navigation and user data transfer recommended; FSC codes may need reactivation
Body Domain Controller / Front Electronic Module (BDC/FEM) 1.8 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind glove box, right side of dashboard
🔧 BMW ISTA + ICOM Next
⚠️ Central body control; VIN coding mandatory; controls lighting, wipers, comfort functions
Car Access System (CAS) 1.8 hr R&R security gateway +1.5 hr ▸ programming details
📍 Behind dashboard, left of steering column
🔧 BMW ISTA + ICOM Next
⚠️ All keys must be re-programmed; ISN sync with DME required; immobilizer and comfort access coding mandatory
Instrument Cluster / Kombi-Instrument (KOMBI) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Dashboard, behind instrument panel
🔧 BMW ISTA + ICOM Next
⚠️ Mileage programming requires dealer authentication; VIN and vehicle order coding mandatory
Dynamic Stability Control (DSC) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Engine compartment, left front near strut tower
🔧 BMW ISTA + ICOM Next
⚠️ Integrated ABS/DSC/DTC; brake bleed required after replacement; steering angle sensor calibration required
Central Gateway Module (ZGW/CGW) 1.5 hr R&R security gateway +1.5 hr ▸ programming details
📍 Behind glove box, right side of dashboard
🔧 BMW ISTA + ICOM Next
⚠️ Security gateway; replacement requires dealer-level authentication; all modules may need re-coding after replacement
Active Cruise Control Radar / Driver Assistance Camera (ACC/KAFAS) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind front bumper center (radar); behind windshield at mirror (camera)
🔧 BMW ISTA + ICOM Next
⚠️ ADAS system; radar and camera calibration mandatory after replacement; requires alignment targets and dealer tool
Electronic Damper Control / Vertical Dynamics Management (EDC/VDM) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Rear cargo floor, center near suspension
🔧 BMW ISTA + ICOM Next
⚠️ Adaptive M suspension; ride height calibration required; only on models with adaptive suspension option
Advanced Crash Safety Module (ACSM) 1.2 hr R&R security gateway +0.5 hr ▸ programming details
📍 Center console, under front seats
🔧 BMW ISTA + ICOM Next
⚠️ Battery disconnect required; crash data must be cleared; seat occupancy calibration may be needed
Door Module (TRSVC/FZD) 1.2 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Inside each door (four modules total)
🔧 BMW ISTA + ICOM Next
⚠️ Controls windows, mirrors, locks; window initialization required after replacement; comfort access coding if equipped
Telematics Communication Box (TCB) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind rear seat, left side trim panel
🔧 BMW ISTA + ICOM Next
⚠️ ConnectedDrive services; SIM card and subscription activation required after replacement
Top View Camera / Rear View Camera (KAFAS/TVM/RFK) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Rear camera in tailgate handle; front/side cameras in mirrors and grille
🔧 BMW ISTA + ICOM Next
⚠️ Surround view system; camera calibration required after replacement; ADAS calibration may be needed
Adaptive LED Headlight Module (AHL/KAFAS) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind each headlight assembly (left and right)
🔧 BMW ISTA + ICOM Next
⚠️ Adaptive LED; headlight aim calibration required after replacement; left and right modules are side-specific
Tailgate Module (HKL) 1.0 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Inside tailgate, left side trim panel
🔧 BMW ISTA + ICOM Next
⚠️ Power liftgate control; position learning required after replacement; kick sensor coding if equipped
Park Distance Control (PDC) 0.8 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind rear bumper, center
🔧 BMW ISTA or Autel MaxiSys
⚠️ Ultrasonic parking sensors; sensor calibration may be required; often integrated with camera module
Seat Module (SM) 0.8 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Under each front seat (driver and passenger)
🔧 BMW ISTA + ICOM Next
⚠️ Controls seat adjustment, heating, ventilation; memory seat adaptation required; occupancy sensor calibration may be needed
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour?
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