Fitment notes: Honda uses compact AGM battery for idle-stop system; battery located in engine compartment
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Control Modules — 2026 Honda Accord
Every control module on the 2023-2026 Honda Accord — 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.
📍 Integrated into transmission valve body assembly, under vehicle
🔧 Honda HDS with i-HDS subscription
⚠️ Requires transmission removal or pan drop. VIN coding and adaptive value reset required. CVT on most models.
Electric Power Steering Control Unit (EPS)2.5 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Integrated into steering rack assembly, under vehicle
🔧 Honda HDS with i-HDS subscription
⚠️ Rack-mounted on all models. Steering angle sensor calibration and torque sensor zero-point learning required after replacement. Subframe removal may be required.
Battery Management Unit / Hybrid Control Module (BMU/HCM)2.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Under rear seat or trunk area, near hybrid battery pack (hybrid models only)
🔧 Honda HDS with i-HDS subscription
⚠️ Hybrid models only (Sport Hybrid on some trims). High-voltage system isolation required. VIN coding and battery pack registration mandatory. Dealer-only service.
Display Audio Unit / Infotainment System (AU/DA)1.8 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Center dash, integrated touchscreen unit (10.2" or 12.3" depending on trim)
🔧 Honda HDS with i-HDS subscription
⚠️ Google Built-In on 2024+ models. VIN coding and system initialization required. Wireless Android Auto/Apple CarPlay. Navigation and map data transfer required on equipped models.
📍 Engine compartment, driver side near brake master cylinder
🔧 Honda HDS with i-HDS subscription
⚠️ Integrated hydraulic unit and controller. Brake system bleeding required after replacement. VIN coding and sensor calibration mandatory.
Climate Control Unit (CCU)1.5 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Center dash, behind climate control panel or integrated into display
🔧 Honda HDS or aftermarket scan tool
⚠️ Actuator relearn required after replacement. Integrated with touchscreen on higher trims.
Head-Up Display Control Unit (HUD)1.5 hr R&Rdealer / factory tool +0.3 hr▸ programming details
📍 Behind instrument cluster or integrated into dash top
🔧 Honda HDS with i-HDS subscription
⚠️ Available on higher trims 2024+. Calibration and alignment required after replacement or windshield replacement.
Millimeter Wave Radar / Honda Sensing 360 Control Unit (MWR/HS360)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind front grille, center lower bumper area (front radar) and rear bumper corners (corner radars on 360)
🔧 Honda HDS with i-HDS subscription + alignment tool
⚠️ Honda Sensing 360 on 2024+ adds corner radars. Radar aiming and calibration required after replacement or collision. Requires Honda-specific alignment targets. Controls ACC, CMBS, LKAS, cross-traffic alert.
Multi-View Camera System Control Unit / Front Camera (MVC/FC)1.2 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Behind rearview mirror (front camera), rear liftgate/trunk (rear camera), and side mirrors (side cameras on 360)
🔧 Honda HDS with i-HDS subscription + calibration targets
⚠️ Front camera is part of Honda Sensing; requires static calibration with targets after windshield replacement or camera replacement. Multi-view system on higher trims requires all cameras calibrated together.
📍 Engine compartment, driver side firewall area, mounted to bulkhead
🔧 Honda HDS with dealer authentication + J2534 pass-thru
⚠️ Enhanced security gateway. VIN coding, immobilizer pairing, and calibration download required. Dealer PIN or AutoAuth required for programming. All keys must be present.
Supplemental Restraint System Control Unit (SRS)1.0 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Center console area, under front seats or center tunnel
🔧 Honda HDS with i-HDS subscription
⚠️ VIN coding required. All crash data stored; must be cleared or replaced after deployment. Battery disconnect mandatory during service.
Adaptive Driving Beam Control Unit / LED Headlight Control Unit (ADB/LEDCU)1.0 hr R&Rdealer / factory tool +0.4 hr▸ programming details
📍 Behind headlight assemblies or integrated into headlight housing
🔧 Honda HDS with i-HDS subscription
⚠️ LED headlight models standard. Automatic high-beam and adaptive beam control. Aiming and calibration required after replacement.
Immobilizer-Keyless Control Unit / Smart Entry Control Unit (IMOES/SECU)1.0 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Center console area or behind dash near steering column
🔧 Honda HDS with dealer authentication
⚠️ All keys must be present for programming. Enhanced cryptographic pairing with PCM required. Smart entry, push-button start, and digital key (phone-as-key) functions on 2024+. Aftermarket key programming not possible.
HondaLink Telematics Control Unit (TCU)1.0 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Behind center dash or under passenger seat
🔧 Honda HDS with i-HDS subscription + HondaLink server activation
⚠️ 5G capable on 2025+ models. Requires HondaLink subscription activation and server registration. VIN coding mandatory. OTA update capability.
Body Control Module (BCM)0.9 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Driver side lower dash, behind kick panel trim
🔧 Honda HDS with dealer authentication or Autel MaxiSys Ultra with AutoAuth
⚠️ Enhanced security gateway. Requires dealer PIN or AutoAuth subscription. Controls lighting, wipers, power windows, door locks, memory settings. All customization lost on replacement.
Driver Information Interface / Digital Instrument Cluster (DII)0.8 hr R&Rsecurity gateway +0.6 hr▸ programming details
⚠️ Fully digital cluster. VIN coding and mileage programming required. Mileage must match vehicle records; dealer verification mandatory to prevent odometer fraud.
Gateway Control Unit (GWY)0.8 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Driver side lower dash, near BCM or integrated into BCM
🔧 Honda HDS with dealer authentication
⚠️ Enhanced security gateway enforces authentication for all module programming. Replacement requires dealer-level access. May be integrated with BCM.
Parking Sensor Control Unit (PSU)0.8 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Behind rear bumper cover, center or driver side
🔧 Honda HDS or aftermarket scan tool
⚠️ Sensor calibration/relearn required after replacement. Front and rear sensors on higher trims.
Fuel Pump Control Module (FPCM)0.6 hr R&Rno coding
📍 Under rear seat or in trunk area, near fuel tank
⚠️ Plug-and-play replacement. Controls fuel pump speed based on PCM commands.
Power Window Master Switch / Door Control Unit (MSPW/DCU)0.6 hr R&Rrelearn only +0.1 hr▸ programming details
📍 Driver door panel, integrated into master switch assembly
🔧 Self-learn procedure (window up/down cycle)
⚠️ Auto-up/down window relearn required after replacement. Simple manual procedure, no scan tool needed.
Power Seat Control Unit (SCU)0.5 hr R&Rrelearn only +0.1 hr▸ programming details
📍 Under driver and/or passenger power seat
🔧 Honda HDS or self-learn
⚠️ Memory seat settings stored in BCM. Position relearn may be required after replacement.
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 Honda Accord 1.5L I4 Turbo and can vary by trim.
🔧 Built by master technician Chris Hackleman · Master Technician · 20+ years.