Fitment notes: Standard flooded battery; located in engine bay
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Every control module on the 2018-2023 Toyota Camry — 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
🔧 Toyota Techstream with TIS subscription
⚠️ Requires transmission removal or pan drop. VIN registration and adaptive learning reset required. 8-speed transmissions (2018-2019 V6) have external TCM on transmission case.
Electric Power Steering Control Module (EPS ECU)2.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Integrated into steering column assembly, under lower dashboard
📍 Engine compartment, driver side near strut tower
🔧 Toyota Techstream with TIS subscription
⚠️ Integrated with VSC/traction control. Brake bleeding required after replacement. VIN registration and yaw rate sensor calibration required.
Air Conditioning Amplifier / HVAC Control Module (A/C AMP)1.8 hr R&Raftermarket tool +0.2 hr▸ programming details
📍 Behind center dashboard, above center console
🔧 Autel, Launch, or Techstream
⚠️ Dual-zone systems have more complex configuration. Basic initialization can be done with aftermarket tools.
Body Control Module / Multiplex Network Body ECU (BCM)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind lower left dashboard trim, above driver kick panel
🔧 Toyota Techstream with TIS subscription
⚠️ Controls lighting, wipers, power windows, door locks. Requires VIN registration and configuration of all body options. Smart key registration required.
⚠️ Part of Toyota Safety Sense (TSS). Requires precise aiming/calibration after replacement or front-end collision. VIN registration required.
Data Communication Module / Telematics Control Unit (DCM)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind headliner, above rearview mirror area, or behind dashboard
🔧 Toyota Techstream with TIS subscription
⚠️ Safety Connect / Service Connect system. Requires activation with Toyota. VIN and subscription registration required.
Engine Control Module / Powertrain Control Module (ECM/PCM)1.2 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Engine compartment, driver side firewall area, mounted to bulkhead
🔧 Toyota Techstream with TIS subscription
⚠️ VIN registration, immobilizer pairing, and throttle relearn required. Hybrid models have integrated HV system communication that must be initialized.
Adaptive Front Lighting System ECU / AFS ECU (AFS ECU)1.2 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Integrated into headlight assembly, both sides
🔧 Autel, Launch, or Techstream
⚠️ Optional on XLE/XSE. Auto-leveling and cornering lamp control. Headlight aiming required after replacement.
📍 Center console area, under center floor carpet between front seats
🔧 Toyota Techstream with TIS subscription
⚠️ Crash data must be cleared. VIN registration required. Occupant classification system calibration required.
Pre-Collision Camera / Forward Recognition Camera (FR CAMERA)1.0 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind windshield, integrated into rearview mirror assembly
🔧 Toyota Techstream with TIS subscription
⚠️ Part of Toyota Safety Sense (TSS). Lane departure, road sign recognition. Requires windshield calibration and aiming after replacement. Windshield replacement requires recalibration.
⚠️ Mileage programming requires dealer access and legal documentation. VIN registration required. TFT display models (XLE/XSE) have different part numbers than analog.
⚠️ Sensor calibration required after replacement. Optional equipment on XLE/XSE trims.
Power Seat Control Module (SEAT ECU)0.8 hr R&Rno coding
📍 Under driver seat, mounted to seat frame
⚠️ Memory seats on XLE/XSE. Typically plug-and-play. Memory relearn done through user interface.
Power Window Master Switch / Door Control Module (DOOR SW)0.5 hr R&Rrelearn only +0.1 hr▸ programming details
📍 Driver door, integrated into master switch assembly
🔧 Manual initialization procedure
⚠️ Auto up/down window relearn required (manual procedure, no scan tool 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.
AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION · 23V865000
2023-12-20
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.
Consequence: An air bag that does not deploy during a crash increases the risk of injury.
Remedy: Dealers will inspect and replace the sensor as necessary, free of charge. Interim letters notifying owners of the safety risk were mailed in February 2024. Some final remedy owner letters were mailed October 31, 2024. Letters will continue to be mailed in phases through January 2026. Owners may contact Toyota customer service at 1-800-331-4331. Toyota's number for this recall is 23TB15/23TA15 Lexus 23LB03/23LA03.
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 2021 Toyota Camry 2.5L I4 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.