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Every control module on the 2023-2026 Mazda CX-50 — 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.
Electric Power Steering Control Module (EPS-CM)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Integrated with steering column assembly, below dash
🔧 Mazda MMDS + VCM II
⚠️ Steering angle sensor calibration and torque sensor zero-point learning required after replacement.
📍 Behind rearview mirror (camera) and behind front grille (radar)
🔧 Mazda MMDS + VCM II + alignment tool
⚠️ Requires precise aiming and calibration with alignment targets. Critical for adaptive cruise and emergency braking. Windshield replacement also requires recalibration.
Mazda Connect Communication Module Unit (CMU)1.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind center display screen in dash
🔧 Mazda MMDS + VCM II
⚠️ Controls infotainment, navigation, connectivity. Software version must match vehicle configuration. May require separate display replacement.
⚠️ Sensor calibration may be needed. Basic relearn procedure available on most tools.
Seat Control Module (SCM)0.6 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Under driver and passenger seats (two modules)
🔧 Any scan tool
⚠️ Memory seat position relearn. Optional on higher trims with power seats.
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 Mazda CX-50 2.5L I4 Turbo Skyactiv-G 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.