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Fitment notes: Located under cargo floor; AGM battery required for energy management system
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Every control module on the 2022-2026 Audi Q4 Sportback 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.
High-Voltage Battery Junction Box / Power Distribution Module (HVJB)3.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Front motor compartment, center firewall area
🔧 VAS 6154/6160 + ODIS-E
⚠️ Contains contactors, fuses, and safety interlocks for high-voltage system. High-voltage lockout mandatory. Coding for system configuration and safety parameters.
📍 Integrated into electric drive unit, front motor compartment (rear on AWD)
🔧 VAS 6154/6160 + ODIS-E or Autel + AutoAuth
⚠️ Single-speed reduction gearbox. Rarely serviced separately from motor controller. Adaptation required for shift characteristics and motor torque mapping.
Motor Electronics Control Module (MECM)2.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Front motor compartment, mounted on electric drive unit (rear motor on dual-motor AWD variants has integrated controller)
🔧 VAS 6154/6160 + ODIS-E or Autel IM608/MaxiSys Ultra + AutoAuth
⚠️ Controls AC synchronous motor. Dual-motor AWD models have second controller integrated into rear drive unit (add 3.2 hours R&R). Requires motor adaptation and high-voltage system calibration.
Electric Power Steering Control Module (EPS)2.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Integrated into steering column assembly, below dashboard
⚠️ Keyless entry/start system. Key fob programming requires dealer access or advanced aftermarket tools with gateway unlock. Immobilizer data transfer from old module if available.
⚠️ 10.1-inch or 11.6-inch touchscreen (market dependent). Requires navigation database transfer and user profile setup. Dealer coding for feature activation (e.g., Apple CarPlay, Android Auto).
⚠️ Power passenger seat on Premium Plus/Prestige. Seat position relearn 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.
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.
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 Sportback e-tron 40 Single Motor RWD and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.