Problem Symptoms Table
WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOMS
| Symptom | Suspect Area | Action |
|---|---|---|
| SET cannot be done and/or CANCEL cannot be done. (DTC is Normal) |
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| SET cannot be done and/or CANCEL cannot be done. (DTC is not output) |
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| Actual vehicle speed deviates above or below the set speed. |
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| Gear shifting occurs frequently between 3rd and O/D when driving on uphill road. (Hurting) |
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| Cruise control is not cancelled even when brake pedal is depressed. |
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DTC P0571/52: BRAKE SWITCH "A" Circuit HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE |
| Cruise control not cancelled, even when transmission is shifted to "N" position. |
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| Control switch does not operate. (+/SET, +/RES, CANCEL not possible) |
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| SET possible at 40 km/h (25 mph) or less, or CANCEL does not operate at 40 km/h (25 mph) or less. |
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| Poor response is ACCEL and RESUME modes. |
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| O/D does not resume even though the road is not uphill. |
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| DTC memory is erased. |
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or |
| DTC is not output, or is output when should not be. |
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| Cruise MAIN indicator light remains ON or fails to come on. |
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| Cruise MAIN indicator light does not come on. |
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