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.
When Removing Battery
When removing battery, power supply is cut off and the information stored in the computer memory is volatilized. Therefore, setting information of some device is initialized to the factory default. The device and functions initialized by removing battery are as follows.
| No. | Item | Job contents when connecting battery |
|---|---|---|
| 1 | Clock (MFD) (settings that the customer set) | Set the clock to the current time. |
| 2 | MFD (high grade type) | Set to the contents checked before disconnecting the battery. |
| 3 | Audio (settings that the customer set) | Set to the contents checked before disconnecting the battery. |
| 4 | Navigation system (settings that the customer set) |
|
| 5 | Temperature setting of fully automatic air conditioner (settings that the customer set) | Set to the contents checked before disconnecting the battery. |
| 6 | Power window system | Initialize automatic full open/close of driver's window (power window system). For the initialization procedure, refer to "GW" section. < Ref. to OPERATION , Power Window System.> |
| 7 | Electronic throttle system | Turn the ignition switch to ON, wait for 10 seconds or more, and start the engine. |
| 8 | Engine control system | Let the engine run at idle until it fully warms up (the radiator fan turns 2 times or more) under no electrical load condition. |
| 9 | Past trouble history (memory code) | - |
| 10 | Active grille shutter system | Perform active test to close the shutter. For procedures, refer to EN(H4DO HEV) (diag). < Ref. to OPERATION , System Operation Check Mode.> |
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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.