Every control module on the 2023-2026 Toyota Alphard — 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 dealer / factory tool +0.6 hr ▸ programming details
📍 Integrated with transmission assembly, left side of engine bay
🔧 Toyota Techstream with TIS subscription
⚠️ Requires transmission fluid drain. VIN registration and adaptive learning reset mandatory. E-CVT specific programming for hybrid models.
Hybrid Vehicle Control Module / Battery ECU (HV ECU / BATTERY ECU) 2.0 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 HV ECU: engine compartment near inverter; Battery ECU: under rear seats with HV battery pack
🔧 Toyota Techstream with TIS subscription
⚠️ High-voltage safety procedures mandatory. Battery pack calibration and cell balancing required. Hybrid system initialization critical. Orange cable disconnect required.
Power Sliding Door ECU / Multiplex Network Door ECU (DOOR ECU) 2.0 hr R&R aftermarket tool +0.4 hr ▸ programming details
📍 Inside each sliding door panel (left and right separate modules)
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Door position learning procedure required. Smart key integration coding needed. Separate modules for left/right doors.
Electric Power Steering Control Module (EPS ECU) 2.0 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Integrated with steering column assembly, below instrument panel
🔧 Toyota Techstream with TIS subscription
⚠️ Steering angle sensor zero-point calibration mandatory. VIN registration required. Lane-keeping integration must be verified.
ABS Actuator / Brake Control Module (ABS ECU) 1.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Engine compartment, driver side near strut tower
🔧 Toyota Techstream with TIS subscription
⚠️ Brake bleeding required after replacement. VIN registration and VSC/hill-start calibration mandatory. Integrated with pre-collision system.
Body Control Module / Multiplex Network Body ECU (BCM) 1.5 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 Behind driver side lower dash panel, above kick panel
🔧 Toyota Techstream with TIS subscription
⚠️ Central gateway hub. All smart key, power door, lighting, and accessory configurations must be transferred. Customer option coding critical.
Gateway ECU / Communication Gateway (GATEWAY) 1.5 hr R&R dealer / factory tool +0.8 hr ▸ programming details
📍 Integrated within BCM or separate module behind driver lower dash
🔧 Toyota Techstream with TIS subscription
⚠️ Central CAN bus hub. All network modules may require re-registration after replacement. Critical for diagnostics access.
Power Back Door ECU (PBD ECU) 1.5 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Inside liftgate, driver side panel
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Height position memory learning required. Kick sensor calibration if equipped. Smart key integration coding.
Panoramic View Monitor ECU / Multi-Terrain Monitor ECU (PVM ECU) 1.5 hr R&R dealer / factory tool +0.8 hr ▸ programming details
📍 Behind center display or under front passenger seat
🔧 Toyota Techstream with TIS subscription
⚠️ Four-camera system calibration mandatory. Parking guide line adjustment required. Display integration coding critical.
Air Conditioning Amplifier / Climate Control ECU (A/C AMP) 1.5 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind center dash, above climate control panel
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Tri-zone or quad-zone configuration coding required. Rear HVAC unit communication setup needed.
Power Seat Control Module / Ottoman Seat ECU (SEAT ECU) 1.2 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Under front seats and second-row captain's chairs (multiple modules)
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Memory position learning required. Ottoman/executive seat configuration coding for second-row. Heating/ventilation integration.
Engine Control Module / Powertrain Control Module (ECM/PCM) 1.2 hr R&R dealer / factory tool +0.8 hr ▸ programming details
📍 Engine compartment, driver side firewall area, mounted on bulkhead
🔧 Toyota Techstream with TIS subscription
⚠️ VIN registration, immobilizer pairing, and calibration flash required. Hybrid system integration requires HV ECU communication verification.
Pre-Collision System Radar / Millimeter Wave Radar (PCS RADAR) 1.2 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 Front grille area, center behind Toyota emblem
🔧 Toyota Techstream with TIS subscription + radar aiming tool
⚠️ Radar aiming and calibration mandatory after replacement or front-end collision. Requires specific target and alignment procedure. TSS 2.5/3.0 system.
Audio / Navigation / Multimedia System (RADIO/NAV) 1.2 hr R&R aftermarket tool +0.4 hr ▸ programming details
📍 Center dash, integrated display unit (9-inch or 14-inch screen)
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Vehicle option coding required for camera integration, JBL audio, and connected services. Map data separate purchase.
SRS Airbag Control Module (SRS ECU) 1.0 hr R&R dealer / factory tool +0.4 hr ▸ programming details
📍 Center console area, beneath front seats or center floor tunnel
🔧 Toyota Techstream with TIS subscription
⚠️ VIN registration required. All airbag sensors and occupant detection must be recalibrated. Crash data cannot be transferred.
Adaptive Front Lighting System ECU / LED Control Module (AFS ECU) 1.0 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind headlight assemblies (left and right separate modules) or integrated in headlight housing
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Headlight aiming required after replacement. Auto-leveling calibration mandatory. Adaptive high-beam configuration if equipped.
Smart Key ECU / Immobilizer ECU (SMART KEY ECU) 1.0 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 Behind center console or under driver seat
🔧 Toyota Techstream with TIS subscription
⚠️ All smart keys must be re-registered. ECM pairing mandatory. Power door and push-start integration required. Security seed-key authentication.
Parking Assist ECU / Clearance Sonar ECU (PA ECU / SONAR ECU) 1.0 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind rear bumper, center or driver side
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Sensor calibration required. Front/rear sensor configuration coding needed. Integrated with panoramic view monitor.
Data Communication Module / Telematics Control Unit (DCM) 1.0 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Behind glove box or center console area
🔧 Toyota Techstream with TIS subscription
⚠️ Toyota Connected Services subscription transfer required. VIN and cellular IMEI registration mandatory at dealer level.
Combination Meter / Instrument Cluster (METER) 0.8 hr R&R dealer / factory tool +0.4 hr ▸ programming details
📍 Instrument panel, behind steering wheel
🔧 Toyota Techstream with TIS subscription
⚠️ Mileage transfer requires dealer authentication. VIN registration mandatory. Multi-information display configuration required.
Ambient Lighting Control Module (AMBIENT ECU) 0.8 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Behind instrument panel or integrated in BCM
🔧 Autel IM608/IM508, Launch X431, or Techstream
⚠️ Color and zone configuration coding. Often integrated with BCM on Alphard executive trim.
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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