2020-2026 Toyota Corolla service guide ADAS Calibration & Module Programming

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted on the firewall/bulkhead side, near the air cleaner box on the driver-side rear of the engine compartment

Reached from under the hood. The air cleaner box and its inlet duct typically come off to clear access to the ECM bracket on the firewall; on some configurations partial removal of the battery/airbox tray area helps. No interior trim removal required.

Disconnect the battery first.

Verify before relying on this - secondary sources only.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Cabin, on the floor pan under the center console, roughly centered on the transmission tunnel beneath the console trim

Reached by removing the center console trim/compartment to expose the metal sensor box bolted to the floor with the keyed restraint-system connectors. Restraint-system service should be left to a qualified professional; this is an orientation reference only, not a service procedure.

Disconnect the battery first.

Airbag system components - professional service is strongly recommended. Never probe or handle an SRS module with the battery connected.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Engine bay, mounted low on the driver side near the firewall/inner fender, with the brake lines and hydraulic block attached

Reached from under the hood. The skid control ECU on this generation is integrated onto the hydraulic ABS actuator assembly (the squarish unit with multiple brake lines), so access is at the actuator itself rather than inside the cabin.

Verify before relying on this - secondary sources only.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.

Access

Located: Cabin, in the dash directly ahead of the driver behind the cluster finish/trim panel

Reached from inside the cabin by removing the cluster finish panel (clip/claw retained) and the cluster mounting fasteners, then drawing the combination meter forward to disconnect it. Steering column/wheel area may need protection or partial clearance for hand access.