| Cause of malfunction | Method of elimination |
| Temperature or fuel gauge not working | |
| Damaged instrument cluster | Check the instrument cluster and replace if faulty |
| The device sensor is faulty | Replace the sensor |
| The wires are damaged or their tips are oxidized | Replace damaged wires, strip terminals | The control lights do not work |
| The light bulb burned out | Replace the lamp |
| The lamp sensor is faulty | Replace the sensor |
| The wires are damaged or their tips are oxidized | Replace damaged wires, strip terminals |
| The lamp socket contacts are not pressed tightly enough to the printed circuit board | Bend the contacts of the lamp socket or replace the socket |
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