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Actions To Take After Removing Battery Or Disconnecting Ground Terminal Of Battery Sensor Or Battery Negative Terminal

When removing the battery or disconnecting the battery terminal, always be sure to turn the ignition switch to OFF and disconnect the ground terminal of the battery sensor (except for hybrid model) or battery negative terminal (for hybrid model) first.

When removing the battery or disconnecting the battery terminal, power supply is cut off and the information stored in the computer memory is volatilized. Therefore, setting information of some devices 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 Set the clock to the current time.
2 MFD 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)
  • Time setting is not necessary because the time information is received via GPS.
  • Set the sound and other settings (items that were set in the selection) to the contents checked before disconnecting the battery.
5 Temperature setting of fully automatic air conditioner (settings that the customer set) Set to the contents checked before disconnecting the battery.
6 Steering lock system (model with keyless access with push button start) If the engine does not start, initialize the steering lock system. For the initialization procedure, refer to "Diagnostics with Phenomenon" of "KEYLESS ACCESS WITH PUSH BUTTON START SYSTEM (DIAGNOSTICS)". Ref. to KEYLESS ACCESS WITH PUSH BUTTON START (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>ENGINE DOES NOT START .
7 EyeSight (model with EyeSight) Set to the contents checked before disconnecting the battery.
8 Electronic throttle system Turn the ignition switch to ON, wait for 10 seconds or more, and start the engine.
9 Engine control system Except for hybrid model
  • Let the engine run at idle until it fully warms up (the radiator fan turns 2 times or more) under no electrical load condition.
  • After connecting the ground terminal to the battery sensor, wait for 10 seconds or more and turn the ignition switch to ON.

Hybrid model
  • Perform the initial learning operation (A/F and AVCS) in the following procedure.
    1. After the battery ground terminal is connected, wait for 10 seconds or more to turn the ignition switch to ON.
    2. After turning the ignition switch to ON, activate the "Service mode".
    3. After activating the "Service mode", set to READY_ON and start the engine.
    4. Let the engine run in P range until it fully warms up (the radiator fan starts turning).
    5. Shift the selector lever to D range and confirm the engine stops.
    6. If the engine does not stop, shift the lever to P range again and leave undone for five minutes, then repeat the procedures from Step 5. (Perform steps  5 and  6 until the engine stops.)
    7. When confirming the engine stops, turn the ignition switch to OFF to terminate the procedure.
10 Telematics Perform the Bluetooth connection procedure between head unit (without navigation) and smartphone. Ref. to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BLUETOOTH CONNECTION PROCEDURE BETWEEN HEAD UNIT (AUDIO WITHOUT NAVIGATION) AND SMARTPHONE .
11 Past trouble history (memory code) -
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