Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use this procedure to troubleshoot the climate control seat system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer to confirm the problem.
Click here .gif)
|
| 3. | PRE-CHECK |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
|
| 4. | CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTC.
Click here
| Result | Proceed to |
|---|---|
| DTC B14B5 is not output | A |
| DTC B14B5 is output | B |
| B | .gif) | GO TO SEAT HEATER SYSTEM |
|
| 5. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table | A |
| Fault is listed in Problem Symptoms Table | B |
| B | | GO TO STEP 7 |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Terminals of ECU
Click here
(b) On-vehicle Inspection
Click here
(c) Inspection
Click here
|
| 7. | REPAIR OR REPLACE |
|
| 8. | CONFIRMATION TEST |
| NEXT | | END |
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE SEAT HEATER SYSTEM HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function, first make sure that the function can be cu ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the battery voltage is low, the climate control seat system may not operate. When "Operation of Electrical Items Restricted." is displayed on the multi-information di ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > How To Troubleshoot Ecu Controlled Systems: General Information
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A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve inspecting the ECU c ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Panel Switches do not Function
CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System. Click here PROCEDURE 1. CHECK PANEL SWITCH (a) Check fo ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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