LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2007 >> Prius Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Door Lock >> Key Reminder Warning System >> Problem Symptoms Table
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Problem Symptoms Table

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.

Key reminder warning system 

PROBLEM SYMPTOMS TABLE

Symptom Suspected area See
Key reminder buzzer does not sound 1. Front door courtesy light switch circuit (driver side) FRONT DOOR LOCK 
2. Combination meter FRONT DOOR LOCK 
3. Power source circuit FRONT DOOR LOCK 
4. Key slot FRONT DOOR LOCK 
5. Wire harness FRONT DOOR LOCK 
6. Transponder key ECU FRONT DOOR LOCK