LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis (Single Page) >> Steering >> Steering Column >> Steering Lock System - Diagnostic Codes & Symptom Tests >> Steering Lock System >> Unable to Unlock Steering Wheel (Engine cannot Start) [08/2015 - 08/2019] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Unable to Unlock Steering Wheel (Engine cannot Start) [08/2015 - 08/2019]: Description

The power management control ECU supplies the power to activate the motor of the steering lock actuator assembly.

The steering lock actuator activates the steering lock motor and moves the lock bar into the steering column to lock the steering wheel.

The steering lock may not release when the lock bar gets stuck in the lock hole of the steering column. In this case, if an engine start operation is performed while shaking the steering wheel in the same manner as is done for a vehicle with a mechanical key, the lock bar will release.

The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU as the steering lock ECU is not connected to the CAN communication system.