Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
When the fold seat control ECU (RH/LH seat) is replaced , it is necessary to perform initialization.
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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 probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Fold/Return functions do not operate. (Using fold seat switch assembly and No. 1 fold seat switch assembly) | Initialization | |
| Proceed to "Power Source Circuit" | | |
| Proceed to "Park/Neutral Position Switch Circuit" | | |
| Proceed to "IG Signal Circuit" | | |
| Proceed to "Power Seat Motor Circuit" | | |
| Fold seat control ECU (RH seat) | | |
| Fold seat control ECU (LH seat) | | |
| Fold/Return functions do not operate. (Using No. 1 fold seat switch assembly) | Proceed to "Back Door Courtesy Switch Circuit" | |
| Proceed to "Fold Seat Switch Circuit" | | |
| Fold seat control ECU (RH seat) | | |
| Fold seat control ECU (LH seat) | | |
| Fold/Return functions do not operate. (Using fold seat switch assembly) | Proceed to "Fold Seat Switch Circuit" | |
| Fold seat control ECU (RH seat) | | |
| Fold seat control ECU (LH seat) | | |
| Buzzer sounds continuously even though the rear No. 2 power seat is in the fully folded or returned position | Initialization | |
| Operation check | | |
| Proceed to "Position Sensor Circuit" | | |
| Fold seat control ECU (RH seat) | | |
| Fold seat control ECU (LH seat) | | |
| Jam protection function operates unnecessarily | Check for foreign objects around the rear No. 2 power seat | - |
| Initialization | | |
| Operation check | | |
| Proceed to "Position Sensor Circuit" | | |
| Fold seat control ECU (RH seat) | | |
| Fold seat control ECU (LH seat) | |
Initialization
INITIALIZATION 1. INITIALIZATION (INITIAL POSITION CLEAR) NOTICE: It is necessary to perform initialization (initial position clear) if any of the following conditions are met.
The fold seat contro ...
Terminals Of Ecu
TERMINALS OF ECU CHECK FOLD SEAT CONTROL ECU (RH SEAT) (a) Disconnect the x15 and x16 fold seat control ECU (RH seat) connectors. (b) Measure the resistance and voltage according to the value(s) in t ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Quarter Trim Speaker (w/ Rear No. 2 Seat): Inspection
INSPECTION PROCEDURE 1. INSPECT QUARTER SIDE SPEAKER ASSEMBLY (a) With the speaker installed, check that there is no looseness or other abnormalities. (b) Check that there is no foreign matter in the speaker, no tears on the speaker cone or other abnormalities. (c) Measure the resistance of the s ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Canister: Installation
INSTALLATION PROCEDURE 1. INSTALL CHARCOAL CANISTER LEAK DETECTION PUMP SUB-ASSEMBLY HINT: Only perform this procedure when replacement of the charcoal canister leak detection pump sub-assembly is necessary. (a) Engage the 2 claws to install a new charcoal canister leak detection pump sub-assembl ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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