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🌍 International coverage, work in progress. This European-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.

2001–2004 AUDI A4

2.5L V6 TDI•AWD•diesel•BFC•turbo
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Control Modules — 2001–2004 Audi A4

Every control module on the 2002-2005 Audi A4 — 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.
ABS/ESP Control Module (ABS/ESP)1.5 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Engine bay, driver side near brake master cylinder
🔧 VCDS or VAS 5052
⚠️ ESP standard on most B6; steering angle sensor calibration required after replacement
Door Control Module (DCM)1.3 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Inside door panel (driver and passenger doors)
🔧 VCDS or VAS 5052
⚠️ Controls windows, mirrors, locks per door; one-touch window adaptation required
Steering Angle Sensor/Column Electronics (SAS)1.2 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Steering column under dash
🔧 VCDS or VAS 5052
⚠️ Calibration required after replacement or wheel alignment; critical for ESP function
Central Convenience Control Module (CCCM)1.0 hr R&Raftermarket tool +0.4 hr▸ programming details
📍 Driver side footwell behind kick panel
🔧 VCDS or VAS 5052
⚠️ Long coding for DRL, auto-lock, convenience features; CAN gateway functions integrated in some models
Engine Control Module (ECM)1.0 hr R&Raftermarket tool +0.5 hr▸ programming details
📍 Engine bay, driver side firewall or under air filter housing
🔧 VCDS or VAS 5052
⚠️ Immobilizer adaptation required; CAN-bus architecture standard
Climate Control Module (CCM)1.0 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Behind center dash climate control panel
🔧 VCDS or VAS 5052
⚠️ Automatic climate control standard; flap adaptation required
Instrument Cluster (IC)0.8 hr R&Raftermarket tool +0.4 hr▸ programming details
📍 Dashboard behind instrument panel
🔧 VCDS or VAS 5052
⚠️ Mileage programming requires dealer tool or EEPROM work; immobilizer integrated
Immobilizer Control Module (Immo)0.8 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Integrated in instrument cluster
🔧 VAS 5052 or EEPROM programmer
⚠️ Component protection active; key programming dealer-level or EEPROM required
Suspension Control Module (CDC)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Trunk area or under rear seat
🔧 VCDS or VAS 5052
⚠️ Continuous Damping Control optional; adaptive suspension on sport models
Transmission Control Module (TCM)0.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Under driver seat or in transmission tunnel
🔧 VCDS or VAS 5052
⚠️ Automatic transmission only; adaptation channels for shift points required
Airbag Control Module (ACM)0.7 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Center console tunnel under shifter or under front seats
🔧 VCDS or VAS 5052
⚠️ Crash data clearing required; side airbags standard on most trims
Gateway Control Module (Gateway)0.7 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Driver side footwell or behind dash
🔧 VCDS or VAS 5052
⚠️ Standard on B6; bridges multiple CAN networks and K-line legacy modules
Headlight Range Control/Adaptive Frontlighting (AFS)0.7 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Behind headlight assembly or in engine bay
🔧 VCDS or VAS 5052
⚠️ Bi-Xenon with adaptive lighting optional; basic leveling standard
Parking Aid Control Module (PDC)0.7 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Rear trunk area or under rear shelf
🔧 VCDS or VAS 5052
⚠️ Optional equipment; rear sensors standard when equipped, front sensors rare
Radio/Navigation Control Module (RNS-E)0.6 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Center dash radio slot
🔧 VCDS or VAS 5052
⚠️ RNS-E navigation optional; Symphony radio standard; CAN-bus communication
Telephone Control Module (Phone)0.6 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Trunk area or under rear shelf
🔧 VCDS or VAS 5052
⚠️ Optional Audi phone system; rare in US market
Seat Memory Control Module (Seat Memory)0.5 hr R&Rrelearn only +0.1 hr▸ programming details
📍 Under driver or passenger seat
🔧 VCDS
⚠️ Optional on higher trims; memory and heating functions
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.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.
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