Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2012IS 250C V6-2.5L (4GR-FSE)REPAIR AND DIAGNOSISSTEERING AND SUSPENSIONSTEERINGSTEERING COLUMNDESCRIPTION AND OPERATIONPOWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEMSYSTEM DESCRIPTION
2012 Lexus IS 250C V6-2.5L (4GR-FSE)
System Description
2012 Lexus IS 250C V6-2.5L (4GR-FSE)SECTION System Description
STEERING COLUMN: POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM: SYSTEM DESCRIPTION
1. MAIN COMPONENTS
(a) Multiplex tilt and telescopic ECU
This ECU sends a control signal to the power tilt motor and the power telescopic motor, based on signals from each switch, to adjust the steering position.
(b) Power tilt motor (with tilt position sensor)
This motor is activated by a signal from the multiplex tilt and telescopic ECU and adjusts the tilt position.
The tilt position sensor in the motor detects the tilt position by counting the number of pulses as the motor rotates.
(c) Power telescopic motor (with telescopic position sensor)
This motor is activated by a signal from the multiplex tilt and telescopic ECU and adjusts the telescopic position. The telescopic position sensor in the motor detects the telescopic position by counting the number of pulses as the motor rotates.
2. MANUAL OPERATION
(a) The tilt and telescopic positions can be adjusted as desired by operating the tilt and telescopic switch.
3. AUTO AWAY/RETURN FUNCTION
(a) When the engine switch is turned off, the steering column moves forward, away from the driver, and also tilts up for easy exit and entry.
(b) When the engine switch is turned on (IG), the steering column returns to the previously set position.
(c) The auto away/return function can be disabled using the Techstream.
4. DRIVING POSITION MEMORY FUNCTION (with Seat Position Memory)
(a) The steering column moves to the previously set position by pressing the seat memory switches.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.