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.
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HOMESERVICE MANUALSHYUNDAI2003TIBURON L4-2.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSKEY REMINDER FUNCTION
2003 Hyundai Tiburon L4-2.0L
Key Reminder Function
2003 Hyundai Tiburon L4-2.0LSECTION Key Reminder Function
KEY REMINDER
1. Function explanation When ignition key is in the key cylinder and driver's side door or the passenger's side door is open, if the knob is locked, then it outputs automatically to prevent the door lock.
2. Related schematic diagrams.
- See the Immobilizer Control System, Courtesy & Luggage Room Lamp.
3. Input/output signal.
- Fuse F18 (10 A)
- Input Door warning switch (H4), Driver's side door switch (E9), Passenger's side door switch (E4)
4. Related Hi-scan(pro) failure diagnosis.
1. Input/output monitoring.
1. Select "01 POWER" and press [ENTER] Then the following screen will be displayed. Check BCM input condition against door warning switch.
2. Select "04 DOOR" and press [ENTER] Then, the following screen will be displayed. Check BCM input condition against driver's side door switch and passenger's side door switch.
5. Expected failure symptoms.
Key reminder function does not work.
6. Actions by failure symptoms
Key reminder function does not work.
1. Function explanation When ignition key is in the key cylinder and driver's side door or the passenger's side door is open, if the knob is locked, then it outputs automatically to prevent the door lock.
2. Related schematic diagrams.
- See the Immobilizer Control System, Courtesy & Luggage Room Lamp.
3. Input/output signal.
- Fuse F18 (10 A)
- Input Door warning switch (H4), Driver's side door switch (E9), Passenger's side door switch (E4)
4. Related Hi-scan(pro) failure diagnosis.
1. Input/output monitoring.
1. Select "01 POWER" and press [ENTER] Then the following screen will be displayed. Check BCM input condition against door warning switch.
2. Select "04 DOOR" and press [ENTER] Then, the following screen will be displayed. Check BCM input condition against driver's side door switch and passenger's side door switch.
5. Expected failure symptoms.
Key reminder function does not work.
6. Actions by failure symptoms
Key reminder function does not work.
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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.