Problem Symptoms Table
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
Use the table below to help you find the cause of the problem.
The numbers indicate the ranked order of probability of each of the possible causes.
Check each part in order.
Replace the applicable parts as necessary.
TRANSFER SYSTEM
PROBLEM SYMPTOMS TABLE
| Symptom | Suspected Area | Information |
|---|---|---|
| Noise | Oil (Level low) | ADJUSTMENT |
| Oil (Wrong) | ADJUSTMENT | |
| Transfer faulty | TRANSFER ASSEMBLY | |
| Oil leakage | Oil (Level too high) | ADJUSTMENT |
| Gasket (Damaged) | TRANSFER ASSEMBLY | |
| Oil seal (Worn or damaged) | TRANSFER ASSEMBLY | |
| O-ring (Worn or damaged) | TRANSFER ASSEMBLY | |
| Shift from 4WD (H4) to 4WD (H4) impossible | Four wheel drive control switch | INSPECTION |
| Wire harness | INSPECTION | |
| Four wheel drive control ECU | INSPECTION | |
| Shift from 4WD (L4) to 4WD (H4) impossible | Four wheel drive control switch | INSPECTION |
| Wire harness | INSPECTION | |
| Four wheel drive control ECU | INSPECTION |