Problem Symptoms Table
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Use the table below to help determine the cause of the problem symptom 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
- The power tilt and power telescopic steering column system uses the CAN communication system, so check its diagnostic system before proceeding to troubleshooting.
- If the instruction "PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE" is given in the flowchart of a symptom, proceed to the next suspected area in the table below to continue the check.
- If the problem still occurs when there is no abnormality in the related circuits, check the multiplex tilt and telescopic ECU and replace it if necessary
Power tilt and power telescopic steering column system
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Only manual switch does not operate | Tilt and telescopic manual switch | TILT AND TELESCOPIC MANUAL SWITCH CIRCUIT |
| Windshield wiper switch | TILT AND TELESCOPIC MANUAL SWITCH CIRCUIT | |
| Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto away/return function does not operate | Check customization status of auto away function using intelligent tester or Techstream | CUSTOMIZE PARAMETERS |
| IG power source circuit | IG POWER SOURCE CIRCUIT | |
| Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto away function does not operate | Smart access system with push button start function | PROBLEM SYMPTOMS TABLE |
| Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only auto return function does not operate | Smart access system with push button start function | PROBLEM SYMPTOMS TABLE |
| Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU | |
| Only memory function does not operate | Seat memory switch LH | INSPECTION |
| Multiplex tilt and telescopic ECU | MULTIPLEX TILT AND TELESCOPIC ECU |