Fitment notes: Located under cargo floor; AGM battery required for start-stop and energy management system
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Every control module on the 2022-2026 Audi Q4 e-tron — 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 Control Module (BMS)8.0 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Integrated into high-voltage battery pack, under floor pan
🔧 ODIS-E + Security Gateway access
⚠️ Requires battery pack removal/disassembly. VIN-locked; coding includes cell balancing parameters and capacity calibration. High-voltage safety procedures mandatory.
Rear Motor Control Unit (MCU-R)3.0 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Rear motor compartment, mounted on rear electric drive unit (Quattro models only)
🔧 ODIS-E + Security Gateway access
⚠️ Only on Q4 50 e-tron Quattro models. VIN-locked; high-voltage safety procedures mandatory.
Motor Control Unit (MCU)2.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Front motor compartment, mounted on top of electric drive unit
🔧 ODIS-E + Security Gateway access
⚠️ Controls front electric motor; VIN-locked and requires SGW authentication. Replacement requires dealer-level access or third-party solutions like AutoAuth.
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.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2025 GTI, Golf R, Audi A5, A6 Sportback E-Tron, S5, S6 Sportback E-Tron, 2026 Q4 Sportback E-Tron, and Q4 E-Tron vehicles. The torsion bar in one or both front seat belt retractors may have been damaged during production.
Consequence: In a crash, a damaged torsion bar in a retractor could fail. If this happens, the seat belt may not properly restrain an occupant during a crash, increasing the risk of injury.
Remedy: Dealers will replace one or both front seat belts, free of charge. Owner notification letters were mailed October 30, 2025, and October 31, 2025. Owners may contact Audi at 1-800-253-2834 or Volkswagen at 1-800-893-5298. Audi's number for this recall is 69UM; Volkswagen’s number for this recall is 694T. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 26, 2025.
Performance
Horsepower
295hp
Torque
339lb-ft
Wiper blades
2026 model follows same platform as 2022-2025 Q4 e-tron generation
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2026 Audi Q4 e-tron 50 quattro Dual Motor AWD and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.