Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Initialization

• The fold seat control ECU has been replaced with a new one.
• Initialization Cancel (Initial Position Reset) has been performed.
• The cable was disconnected from the negative (-) battery terminal when a rear power seat was being operated.

HINT:

• Initialization can only be performed using the rear power seat switch of the rear power seat to be initialized. If the fold seat switch assembly is operated before initialization has been completed, a buzzer will sound continuously.
• If initialization has not been completed, the rear power seat can only be reclined using the rear power seat switch.
• The rear power seat switch is a collective term for the rear power seat switch RH and the rear power seat switch LH.

• The fold seat control ECU has been replaced with a used one.
• The rear seatback has been moved with the fold seat control ECU removed.
• The position of the rear seatback is abnormal due to the seat being disassembled or parts of the seat being replaced.

• Initialization has been completed.
• The rear power seat switch and fold seat switch assembly are not being operated.
• The vehicle is stopped.

  Engine Switch State	Condition
  Engine switch on (IG)	Shift lever in P, stop light switch assembly on or parking brake applied
  	Vehicle speed below 5 km/h (3.1 mph)
  Engine switch off	-

• The back door is open.

System Description

SYSTEM DESCRIPTION REAR POWER SEAT CONTROL SYSTEM DESCRIPTION The rear power seats have the following functions: reclining, fold and return, and jam protection. Both the left and right rear seat ...

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual > Specifications: Fuel information
You must only use unleaded gasoline. Select premium unleaded gasoline with an octane rating of 91 (Research Octane Number 96) or higher required for optimum engine performance and fuel economy. If the octane rating is less than 91, damage to the engine may occur and may void the vehicle war ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Ignition System: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. PERFORM SPARK TEST CAUTION: To prevent injury due to contact with an operating V-ribbed belt or cooling fan, keep your hands and clothing away from the V-ribbed belt and cooling fans when working in the engine compartment with the engine running or the engine switc ...