Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Problem Symptoms Table
If a normal system code is displayed during the DTC check, but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting information.
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See |
|---|---|---|
| Wireless control function and entry function do not operate | Proceed to "All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate" | Refer to All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate |
| Wireless control function does not operate but entry function operate | Replace electrical key transmitter | - |
| Luggage compartment door open function only does not operate | Perform operation check | Refer to OPERATION CHECK |
| Proceed to "Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment" | Refer to Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment | |
| Answer-back function only does not operate | Proceed to "No Answer-Back" | Refer to No Answer-Back |
| Automatic lock function only does not operate normally | Perform operation check | Refer to OPERATION CHECK |
| Lighting system (door courtesy light switch circuit) | Refer to Door Courtesy Switch Circuit | |
| Main body ECU | - | |
| Illuminated entry function only does not operate | Perform operation check | Refer to OPERATION CHECK |
| Lighting system (illuminated entry function) | Refer to PROBLEM SYMPTOMS TABLE | |
| Main body ECU | - | |
| Door ajar warning function only does not operate | Perform operation check | Refer to OPERATION CHECK |
| Lighting system (door courtesy light switch circuit) | Refer to Door Courtesy Switch Circuit | |
| Main body ECU | - | |
| Panic alarm function only does not operate | Perform operation check | Refer to OPERATION CHECK |
| Horn system | - | |
| Main body ECU | - |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.