Every control module on the 2017-2026 Audi A5 — 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.
Transmission Control Module (TCM / Mechatronic) 4.0 hr R&R security gateway +1.2 hr ▸ programming details
📍 Inside transmission valve body (S-tronic/DSG) or external on case (Tiptronic)
🔧 ODIS Engineering + security gateway unlock
⚠️ DSG mechatronic requires transmission removal or subframe drop. Component protection and adaptation locked. Transmission fluid service required.
Body Control Module / Central Electrics (BCM / CE) 2.0 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind dashboard, left side kick panel
🔧 ODIS Engineering
⚠️ Controls lighting, windows, locks, comfort functions. Component protection on most functions. Security gateway blocks aftermarket.
Central Gateway Control Module (Gateway / SGW) 1.8 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind dashboard, center console area
🔧 ODIS Engineering
⚠️ Security Gateway 17+ is the gatekeeper for all module access. Replacement requires dealer online authentication and VIN coding. Critical module.
ABS/ESP Control Module (ABS) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Engine bay, left front near brake master cylinder
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Brake bleeding required. Security gateway blocks most aftermarket tools without authentication.
Mild Hybrid Battery Management Module (MHEV / BMS) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Trunk area or under rear seat
🔧 ODIS Engineering
⚠️ 2020+ models with 48V mild hybrid system. High-voltage safety procedures required. Component protection locked.
Electric Power Steering Control Module (EPS) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Steering column or rack-mounted (varies by model)
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Electric power steering standard 2017+. Steering angle calibration and component protection coding required.
Climate Control Module (CCM) 1.5 hr R&R security gateway +0.5 hr ▸ programming details
📍 Behind center dashboard HVAC controls
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Automatic climate requires flap motor calibration. Security gateway may block aftermarket access.
MMI Navigation Plus / MMI Touch (MMI 3G+) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind center dashboard screen
🔧 ODIS Engineering
⚠️ MMI 3G+ (2017-2019) or MIB 2.5/3 (2020+). Component protection and feature coding locked. Navigation SD card separate.
Engine Control Module (ECM) 1.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Engine bay, left side near firewall or under intake manifold depending on engine
🔧 ODIS Engineering + security gateway unlock (Autel IM608/IM508 with AutoAuth)
⚠️ Security Gateway 17+ blocks aftermarket access. Component protection requires online dealer authentication or AutoAuth bypass. Immobilizer pairing mandatory.
Instrument Cluster / Virtual Cockpit (IC / VC) 1.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Dashboard, behind steering wheel
🔧 ODIS Engineering
⚠️ Virtual Cockpit (12.3" TFT) standard 2017+. Component protection locks mileage/VIN. Mileage transfer requires dealer online authentication.
Headlight Control Module / Matrix LED (AFS / Matrix) 1.2 hr R&R security gateway +0.5 hr ▸ programming details
📍 Inside headlight assembly (per side)
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ LED or Matrix LED standard. Headlight aim calibration and component protection coding required. Expensive module.
Keyless Access / Immobilizer Control Module (Kessy / Immo) 1.2 hr R&R security gateway +1.5 hr ▸ programming details
📍 Center console or steering column area
🔧 ODIS Engineering
⚠️ Key programming requires all keys present and dealer online authentication. Component protection locked. ECM pairing mandatory.
Quattro / All-Wheel Drive Control Module (AWD Module) 1.2 hr R&R security gateway +0.5 hr ▸ programming details
📍 Rear differential or transmission area
🔧 ODIS Engineering
⚠️ Quattro models only. Controls torque distribution. Component protection may apply.
Door Control Module (DCM) 1.0 hr R&R security gateway +0.3 hr ▸ programming details
📍 Inside door panel, per door (all four doors)
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Window, mirror, and soft-close calibration required.
Adaptive Cruise Control Radar Module (ACC Radar) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Front bumper, center behind grille
🔧 ODIS Engineering
⚠️ ACC and Pre-Sense systems. Radar calibration requires dealer tool and alignment targets. Component protection locked.
Telematics Control Module (TCU / Audi Connect) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind dashboard or trunk area
🔧 ODIS Engineering
⚠️ Audi Connect standard 2017+. Requires dealer activation and subscription pairing. Component protection locked.
Fuel Pump Control Module (FPCM) 0.8 hr R&R no coding
📍 Under rear seat or trunk floor, near fuel tank
⚠️ Typically plug-and-play. Some models integrate into ECM control.
Airbag Control Module (ACM) 0.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Center console tunnel, under center armrest
🔧 ODIS Engineering
⚠️ Crash data clearing and component protection require dealer tool. Battery disconnect mandatory.
Rear View / Surround View Camera Module (RVC / SVC) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Trunk lid, rear bumper, and side mirrors (surround view)
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Surround view (4-camera) optional. Calibration required after replacement.
Park Assist Control Module (PLA / Park Assist) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Rear bumper area or trunk, left side
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Integrates PDC sensors and camera. Calibration required after replacement.
Adaptive Suspension Control Module (CDC / Adaptive Dampi) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Trunk area, left side behind trim
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Adaptive/sport suspension only. Damper calibration required.
Trailer Control Module (Trailer Module) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Trunk area, left side behind trim
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Factory tow package only. Coding enables trailer detection and lighting.
Seat Memory Control Module (Seat Module) 0.6 hr R&R security gateway +0.3 hr ▸ programming details
📍 Under driver and/or passenger seat
🔧 ODIS Engineering or Autel with AutoAuth
⚠️ Memory seats and massage functions. Calibration required.
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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