Every control module on the 2018-2026 Toyota SW4 — 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.
ABS Actuator / Brake Control Module (ABS/VSC ECU) 1.8 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Engine compartment, driver side near master cylinder or frame rail
🔧 Autel/Launch or Techstream
⚠️ Brake bleeding and VSC/ABS initialization required after replacement
Air Conditioning Amplifier / HVAC Control Module (A/C AMP) 1.5 hr R&R relearn only +0.2 hr ▸ programming details
📍 Behind center dashboard HVAC controls
🔧 Techstream or self-learning
⚠️ Actuator calibration may auto-learn after installation
Pre-Collision System Radar / Millimeter Wave Radar (PCS RADAR) 1.5 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 Front grille center, behind Toyota emblem or lower bumper
🔧 Toyota Techstream + calibration equipment
⚠️ Radar aiming and calibration required; Toyota Safety Sense component; requires alignment targets
Transmission Control Module (TCM) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Integrated with transmission body or engine compartment near ECM
🔧 Toyota Techstream
⚠️ VIN registration and adaptive learning reset required
Kinetic Dynamic Suspension System ECU / Active Suspension Control ECU (KDSS/SUSP ECU) 1.4 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under vehicle near suspension components or in cabin under seat
🔧 Toyota Techstream
⚠️ Suspension calibration and ride height learning required; system bleeding may be needed
4WD Control ECU / Transfer Case Control Module (4WD ECU) 1.3 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Under vehicle near transfer case or in cabin under center console
🔧 Autel/Launch or Techstream
⚠️ 4WD system initialization and actuator calibration required
Power Sliding Door ECU / Multiplex Network Door ECU (DOOR ECU) 1.2 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Inside door panel, typically driver or sliding door
🔧 Autel/Launch or Techstream
⚠️ Door position learning and pinch protection calibration required
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 or under intake manifold
🔧 Toyota Techstream + TIS subscription
⚠️ VIN registration and immobilizer pairing required; security seed-key authentication mandatory
Electric Power Steering Control Module (EPS ECU) 1.2 hr R&R aftermarket tool +0.4 hr ▸ programming details
📍 Steering column or under dashboard near steering shaft
🔧 Autel/Launch or Techstream
⚠️ Steering angle sensor calibration and zero-point learning required
Power Back Door ECU (PBD ECU) 1.0 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Rear liftgate, driver side trim panel
🔧 Autel/Launch or Techstream
⚠️ Height memory and pinch protection learning required
Body Control Module / Multiplex Network Body ECU (BCM) 1.0 hr R&R dealer / factory tool +0.7 hr ▸ programming details
📍 Under dashboard, driver side kick panel or behind glove box
🔧 Toyota Techstream
⚠️ Vehicle configuration and option coding required; controls lighting, wipers, power windows
Adaptive Front Lighting System ECU / LED Headlight Control Module (AFS/LED ECU) 1.0 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind headlight assembly or in engine compartment near headlights
🔧 Autel/Launch or Techstream
⚠️ Headlight leveling and auto-leveling calibration required
Audio / Navigation / Multimedia System (RADIO/NAV) 1.0 hr R&R relearn only +0.2 hr ▸ programming details
📍 Center dashboard stack
🔧 Techstream or self-config
⚠️ Radio code may be required; Bluetooth and settings re-pairing needed
Smart Key ECU / Immobilizer ECU (SMART KEY/IMM) 0.9 hr R&R dealer / factory tool +1.0 hr ▸ programming details
📍 Under dashboard, center console area or behind glove box
🔧 Toyota Techstream + security access
⚠️ All keys must be re-registered; security seed-key required; critical security module
Parking Assist ECU / Clearance Sonar ECU (PA/SONAR ECU) 0.9 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Rear cargo area, driver side trim panel or under rear bumper
🔧 Autel/Launch or Techstream
⚠️ Sensor calibration required after replacement
SRS Airbag Control Module (SRS ECU) 0.8 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Center console tunnel or under driver seat
🔧 Autel/Launch or Techstream
⚠️ Crash data clear and sensor calibration required; battery disconnect mandatory
Combination Meter / Instrument Cluster (METER) 0.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Dashboard instrument panel behind steering wheel
🔧 Toyota Techstream
⚠️ Mileage programming and VIN registration required; odometer fraud prevention
Occupant Detection ECU / Occupant Classification System (ODS/OCS ECU) 0.8 hr R&R dealer / factory tool +0.4 hr ▸ programming details
📍 Under front passenger seat
🔧 Toyota Techstream
⚠️ Calibration with weight set required; safety-critical SRS component
Data Communication Module / Telematics Control Unit (DCM/TCU) 0.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under dashboard, behind glove box, or overhead console
🔧 Toyota Techstream + backend activation
⚠️ Subscription activation and cellular provisioning required; Safety Connect/Entune services
Gateway ECU / Communication Gateway (GATEWAY) 0.7 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Under dashboard, center or driver side
🔧 Toyota Techstream
⚠️ Network configuration required; manages CAN bus communication between modules
Backup Camera / Multi-Terrain Monitor Camera ECU (CAMERA ECU) 0.7 hr R&R relearn only +0.2 hr ▸ programming details
📍 Rear liftgate trim or integrated with camera assembly
🔧 Techstream or auto-config
⚠️ Camera calibration may auto-configure; guideline alignment may be needed
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.