Every control module on the 2024-2026 Mazda CX-70 — 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.
Transmission Control Module (TCM) 2.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Integrated with 8-speed automatic transmission body, driver side of transmission case
🔧 Mazda MMDS + VCM II
⚠️ Transmission removal required; VIN and adaptive values must be programmed; CGW authentication required
Electric Power Steering Control Module (EPS-CM) 2.0 hr R&R security gateway +0.5 hr ▸ programming details
📍 Integrated with steering column assembly, below instrument panel
🔧 Mazda MMDS + VCM II
⚠️ Steering angle sensor calibration required after replacement; VIN programming mandatory
Dynamic Stability Control Module (DSC) 1.5 hr R&R security gateway +0.5 hr ▸ programming details
📍 Engine compartment, driver side near brake master cylinder
🔧 Mazda MMDS + VCM II
⚠️ Integrated hydraulic unit; brake bleeding required after replacement; VIN programming mandatory
Lane Departure Warning Module (LDWS) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Integrated with Forward Sensing Camera behind rearview mirror
🔧 Mazda MMDS + VCM II + Aiming Tool
⚠️ Lane keep assist function; shares camera with FSC; calibration required
Mazda Connect Communication Module Unit (CMU) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind center display screen in dashboard
🔧 Mazda MMDS + VCM II
⚠️ 10.25-inch or 12.3-inch display; navigation and connected services require activation
Connectivity Master Unit (CMU-T) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind center display or integrated with CMU
🔧 Mazda MMDS + VCM II
⚠️ Handles Mazda Connected Services; subscription activation required after replacement
All-Wheel Drive Control Module (AWD-CM) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under vehicle, mounted on transfer case or rear differential
🔧 Mazda MMDS + VCM II
⚠️ i-Activ AWD system; torque distribution calibration required; all CX-70 models have AWD standard
i-ELOOP Control Module (i-ELOOP) 1.2 hr R&R security gateway +0.5 hr ▸ programming details
📍 Engine compartment, near capacitor unit (if equipped)
🔧 Mazda MMDS + VCM II
⚠️ Regenerative braking capacitor system; not available on all trims; high-voltage safety precautions required
Powertrain Control Module (PCM) 1.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Engine compartment, driver side firewall area, mounted on bulkhead
🔧 Mazda MMDS + VCM II
⚠️ Requires VIN programming and immobilizer pairing through CAN Gateway; dealer subscription mandatory
Climate Control Module (CCM) 1.2 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Behind center dash HVAC control panel
🔧 Mazda MMDS + VCM II
⚠️ Dual-zone or tri-zone depending on trim; configuration for installed options required
Body Control Module (BCM) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind driver side lower dash panel, above fuse box
🔧 Mazda MMDS + VCM II
⚠️ Controls lighting, wipers, power windows; requires full configuration for vehicle options
CAN Gateway Module (CGW) 1.0 hr R&R security gateway +1.5 hr ▸ programming details
📍 Behind driver side lower dash panel or center console area
🔧 Mazda MMDS + VCM II
⚠️ Security gateway for all module programming; replacement requires dealer-level authentication and full vehicle reconfiguration
Power Liftgate Module (PLG) 1.0 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Rear liftgate, driver side trim panel
🔧 Mazda MMDS + VCM II
⚠️ Hands-free power liftgate; height memory programming required
Camera Control Module (CCM) 1.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind rearview mirror or integrated with forward sensing camera
🔧 Mazda MMDS + VCM II
⚠️ 360-degree camera system; calibration and configuration required for all camera views
Instrument Cluster (IC) 1.0 hr R&R security gateway +0.5 hr ▸ programming details
📍 Behind instrument panel, driver side dash
🔧 Mazda MMDS + VCM II
⚠️ 12.3-inch TFT display; mileage programming requires dealer authentication; VIN must match
Door Module (DM) 0.8 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Inside each door (four modules: FL, FR, RL, RR)
🔧 Autel or Launch
⚠️ Controls power windows, mirrors, locks per door; typically auto-configures on CAN network
Restraints Control Module (RCM) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Center console area, beneath center stack or under front seats
🔧 Mazda MMDS + VCM II
⚠️ Battery disconnect required; crash data must be cleared; occupant classification calibration needed
Adaptive Front-lighting System Module (AFS) 0.8 hr R&R dealer / factory tool +0.3 hr ▸ programming details
📍 Behind each headlight assembly (left and right modules)
🔧 Mazda MMDS + VCM II
⚠️ LED adaptive headlights; aiming and calibration required after replacement
Keyless Control Module (KCM) 0.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind center console or integrated with BCM
🔧 Mazda MMDS + VCM II
⚠️ All key fobs must be re-registered; immobilizer pairing with PCM required
Parking Sensor Module (PSM) 0.6 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Rear cargo area, driver side trim panel
🔧 Autel or Launch
⚠️ Front and rear parking sensors; calibration typically automatic after installation
Seat Control Module (SCM) 0.6 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Under driver and passenger front seats (two modules)
🔧 Autel or Launch
⚠️ Power seat adjustment, heating, ventilation, and memory; typically no coding required
Wireless Charging Module (WCM) 0.5 hr R&R no coding
📍 Center console, front storage area
⚠️ Qi wireless phone charging; typically plug-and-play, no coding 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?
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