Fitment notes: Auxiliary 12V battery; fuel cell provides primary power; battery located in rear cargo area
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Every control module on the 2019-2026 Hyundai Nexo — 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.
Hydrogen Storage System Control Unit (HSSCU)2.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Rear underfloor, near hydrogen tank assembly
🔧 Hyundai GDS
⚠️ Monitors three 10,000 PSI hydrogen tanks; requires pressure system verification and leak testing after replacement
Heating Ventilation Air Conditioning Control Module (HVAC)2.0 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Behind center dashboard, above center console
🔧 Autel/Launch/GDS
⚠️ Heat pump system for cabin heating without combustion engine; actuator calibration required
Motor Driven Power Steering Control Module (MDPS)1.8 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Steering column assembly, below dashboard
🔧 Autel/Launch/GDS
⚠️ Steering angle sensor calibration required after replacement
⚠️ Memory seat positions may need reinitialization
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.
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 Hyundai Nexo Hydrogen Fuel Cell and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.