Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Inspection
INSPECTION
PROCEDURE
1. INSPECT PRELOAD
| (a) Secure the steering column assembly in a vise using aluminum plates, cloths and wooden blocks. NOTICE:
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| (b) Install 2 service nuts to the steering main shaft. Recommended Service Nut: Thread Diameter 12.0 mm (0.472 in.) Thread Pitch 1.25 mm (0.0492 in.) |
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(c) Simultaneously rotate the service nut that was installed first counterclockwise and rotate the service nut that was installed second clockwise to lock them.
NOTICE:
Do not apply excessive torque to the service nuts by using a tool such as an impact wrench.
HINT:
The service nuts are used for turning the steering main shaft during inspection of the steering main shaft rotating torque.
Remove the service nuts after performing this inspection.
| (d) Using a torque wrench, turn the steering main shaft at a constant rate of approximately 1 revolution every 4 seconds and measure the preload. Preload: 1.3 to 2.7 N*m (13.3 to 27.5 kgf*cm, 11.6 to 23.8 in.*lbf) If the preload is not as specified, replace the power steering ECU assembly or electric power steering column sub-assembly with a new one. |
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(e) Remove the 2 service nuts.
2. INSPECT STEERING COLUMN ASSEMBLY
| (a) Check that the 2 bushings are securely installed to the steering column assembly. If the bushings are deformed, missing or damaged, replace the electric power steering column sub-assembly with a new one. |
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Disassembly
DISASSEMBLY CAUTION / NOTICE / HINT NOTICE:
Do not drop the power steering ECU assembly, strike it with tools or subject it to impacts.
If the power steering ECU assembly is subjected to an impac ...
Installation
INSTALLATION PROCEDURE 1. ALIGN FRONT WHEELS FACING STRAIGHT AHEAD 2. INSTALL STEERING COLUMN ASSEMBLY NOTICE: Make sure that the wire harness is not interfering with the steering column assembly. (a) ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Steering Lock System: Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The steering lock ECU (steering lock actuator or upper bracket assembly) stores DTCs when a malfunction occurs in the system. These DTCs can be confirmed by using the Techstream. NOTICE:
When using the Techstream with the engine switch off to confirm DTCs or Data ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Dynamic Torque Control Awd System: Fail-safe Chart
FAIL-SAFE CHART FAIL-SAFE FUNCTION
If a malfunction is detected in the 4WD ECU assembly, the 4WD ECU assembly may stop AWD control and transfer all torque to the front wheels, or function in a such a way as to prevent damage to the system.
If a malfunction is detected in the sensor or actuator, ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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