When disconnecting the plastic deformed negative battery cable, expand the gap of the negative battery terminal using a flathead screwdriver, and remove the nut.
NOTE:
The negative battery cable nut cannot be removed to prevent it from falling off.
WARNING:
Before removing the SRS air bag system-related parts, always disconnect the negative battery cable and wait for 1 min. or more to allow the back-up power supply to deplete its stored power. (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM].)
| System name | Conditions after disconnecting the negative battery cable | Required procedure | Reference |
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| Before disconnecting negative battery cable | After connecting negative battery cable |
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| Power window system | Reset to initial setting and auto-function is disabled. | − | Perform the power window system initial setting. | ||
| Sunroof system | Reset to initial setting and function is disabled. | − | Perform the sunroof system initial setting. | ||
| Clock and audio | Clock display and audio system memory are reset. | Verify the setting content. | Set the verified content before disconnecting negative battery cable. | − |
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| Tire pressure monitoring system (TPMS) | The tire pressure monitoring system detection accuracy decreases. | − | Perform the tire pressure monitoring system initialization. | (See TIRE PRESSURE MONITORING SYSTEM INITIALIZATION PROCEDURE.) |
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1. Switch the ignition off.
2. Disconnect the negative battery cable.
CAUTION:
When tightening the negative battery cable, tighten it to the specified torque. If it is not tightened to the specified torque, the battery charging/discharging may be affected. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)
1. Perform services required after connecting the negative battery cable. (See Required procedure after negative battery cable disconnection/connection.)
1. Switch the ignition off.CAUTION:
If the nut for the current sensor is loosened with the negative battery cable terminal connected to the battery, excessive torque will be applied to the negative battery cable terminal and the battery terminal will be damaged. When removing the negative battery cable terminal and current sensor, be careful not to damage the battery terminal.
Be careful not to contact the positive battery cable terminal.
Disconnect the current sensor connector before disconnecting the negative battery cable. If the negative battery cable is disconnected first, the PCM may mistakenly recognize a signal from the current sensor causing interference with engine control.
2. Disconnect the current sensor connector.
3. Disconnect the negative battery cable terminal.
When disconnecting the plastic deformed negative battery cable, expand the gap of the negative battery terminal using a flathead screwdriver, and remove the nut.
NOTE:
The negative battery cable nut cannot be removed to prevent it from falling off.
CAUTION:
Connect the negative battery cable before connecting the current sensor connector. If the current sensor connector is connected first, the PCM may mistakenly recognize a signal from the current sensor and learn the battery condition incorrectly.
Verifying the tightness while holding the current sensor may apply excessive force to the terminal and the terminal could loosen, causing poor engine starting. When verifying the tightness of the negative battery cable terminal, only hold the terminal area, not the current sensor.
1. Perform services required after connecting the negative battery cable. (See Required procedure after negative battery cable disconnection/connection.)