🌍 International coverage, work in progress. This Russian-market vehicle is part of our hand-curated international catalog. We are filling in labor times, torque specs and fluids as fast as we can verify them, so some numbers may be missing or marked estimated for now. Do you work on these vehicles in the EU, Russia, or the JDM scene? Help us get it right: send real shop times or corrections to [email protected], or request the data you need and it joins the verification queue.

2021 AUDI A3

2.0L Turbo I4AWDAUTOMATICgasDKZAturbo
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Dead battery / stuck in Park? Emergency neutral procedure for this A3
Every control module on the 2021-2026 Audi A3 — 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)4.5 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Inside transmission (DQ250/DQ381 DSG) or external on valve body
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. DSG mechatronic requires transmission oil change, adaptation, online unlock. Very expensive.
Infotainment Control Module / MMI (MMI / MIB3)2.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Dashboard, center stack behind touchscreen
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected on MIB3 units. Navigation data separate. Bluetooth pairing lost on replacement.
ABS/ESP Control Module (ABS)1.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Engine bay, left front near brake master cylinder
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Brake bleed required. Component protection active.
48V Mild Hybrid Battery Management Module (BMS / 48V)1.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Under rear cargo floor or rear seat area
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ Only on 48V mild hybrid models (some 2024+ trims). SGW 3.0 protected. High voltage safety procedures required.
Electric Power Steering Control Module (EPS)1.5 hr R&Rsecurity gateway +0.7 hr▸ programming details
📍 Steering column, mid-column or lower dash area
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Steering angle sensor calibration required after replacement.
Climate Control Module (CCM / Climatronic)1.5 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Dashboard, center stack behind climate controls
🔧 VCDS, OBDeleven, or ODIS
⚠️ Usually not SGW-protected. Adaptation for flap calibration required.
Body Control Module / Central Electrics (BCM / CE)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Dashboard, left side behind fuse panel or integrated with gateway
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Controls lighting, wipers, central locking.
Door Control Module (DCM)1.2 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Inside each door (driver, passenger, rear doors)
🔧 VCDS, OBDeleven, or ODIS
⚠️ Controls windows, mirrors, locks per door. Usually not SGW-protected. Window auto-up/down relearn needed.
Engine Control Module (ECM)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine bay, left side near firewall, under plastic cover
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Requires online VW/Audi authorization. Component protection ties ECM to VIN.
Central Gateway Control Module (Gateway / CGW)1.2 hr R&Rsecurity gateway +2.0 hr▸ programming details
📍 Dashboard, left side behind fuse panel
🔧 ODIS-E/ODIS-S with factory authorization
⚠️ Security Gateway 3.0 itself. Replacement requires dealer-only online authorization and all module re-adaptation.
Kessy / Immobilizer Control Module (Kessy)1.0 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Dashboard, center console, or steering column area
🔧 ODIS-E/ODIS-S with online authorization
⚠️ SGW 3.0 protected. All keys must be re-learned. Requires online VW/Audi authorization for key programming.
Adaptive Cruise Control Radar Module (ACC Radar)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Front bumper, center behind grille
🔧 ODIS-E/ODIS-S with calibration equipment
⚠️ May be SGW-protected. Requires static or dynamic calibration after replacement. ADAS feature.
Adaptive Damping Control Module (CDC / DCC)1.0 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Rear cargo area, left side behind trim
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ Only on S3 or models with adaptive suspension. SGW 3.0 protected. Calibration required.
Telematics Control Module (TCU / Audi Connect)1.0 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Dashboard, behind glovebox or center console area
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Requires eSIM activation and subscription. Standard on most trims.
Airbag Control Module (ACM)0.8 hr R&Rsecurity gateway +0.6 hr▸ programming details
📍 Center console, under front seats or behind center trim
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Crash data must be cleared. Battery disconnect required.
Digital Instrument Cluster / Virtual Cockpit (IC / Digital Cockpit)0.8 hr R&Rsecurity gateway +0.7 hr▸ programming details
📍 Dashboard, behind steering wheel
🔧 ODIS-E/ODIS-S with online Security Gateway authorization
⚠️ SGW 3.0 protected. Mileage programming requires online authorization to prevent odometer fraud.
Lane Assist / Front Camera Module (Lane Assist)0.8 hr R&Rdealer / factory tool +0.7 hr▸ programming details
📍 Windshield, top center behind rearview mirror
🔧 ODIS-E/ODIS-S with calibration equipment
⚠️ May be SGW-protected. Requires windshield calibration after replacement. ADAS feature.
Park Assist Control Module (PDC / PLA)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Rear bumper area, left or right side behind trim
🔧 VCDS, OBDeleven, or ODIS
⚠️ Usually not SGW-protected. Sensor calibration may be needed.
Seat Memory Control Module (Seat Memory)0.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Under driver and/or passenger seat
🔧 VCDS, OBDeleven, or ODIS
⚠️ Only on models with power/memory seats. Usually not SGW-protected.
Trailer Hitch Control Module (Trailer)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Rear cargo area, left or right side behind trim
🔧 VCDS, OBDeleven, or ODIS
⚠️ Only on vehicles with factory trailer hitch option. Usually not SGW-protected.
Rear View / 360 Camera Control Module (RVC / Area View)0.7 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Rear hatch or integrated with multiple camera locations
🔧 VCDS, OBDeleven, or ODIS
⚠️ Usually not SGW-protected. Calibration may be needed for 360-degree systems.
Fuel Pump Control Module (FPCM)0.7 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Under rear seat or in trunk area near fuel tank
🔧 VCDS, OBDeleven, or ODIS
⚠️ Usually not SGW-protected. Basic adaptation may be needed.
Matrix LED Headlight Control Module (AFS / Matrix LED)0.6 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Each headlight assembly (left and right modules)
🔧 ODIS-E/ODIS-S
⚠️ Matrix LED headlights have separate modules per side. May be SGW-protected. Leveling 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? Tell us — corrections ship fast here.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.
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