Repair Contents: Note: Battery

WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.

ACTIONS TO TAKE AFTER REMOVING BATTERY OR DISCONNECTING GROUND TERMINAL OF BATTERY SENSOR

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 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	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	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.
10	Telematics	Perform the Bluetooth connection procedure between head unit (without navigation) and smartphone. Ref. to REPAIR CONTENTS>NOTE>BLUETOOTH CONNECTION PROCEDURE BETWEEN HEAD UNIT (AUDIO WITHOUT NAVIGATION) AND SMARTPHONE .
11	Power seat memory system	Initialize the power seat. For the initialization procedure, refer to "Power Seat System" of "SEAT". Ref. to SEATS>Power Seat System>ADJUSTMENT .
12	Past trouble history (memory code)	-

GROUND TERMINAL REMOVAL OR INSTALLATION

Disconnect the ground terminal from battery sensor.

Courtesy of SUBARU OF AMERICA, INC.

NOTE: Open the rear gate as necessary before disconnecting the ground terminal from the battery sensor.

Connect the ground terminal to battery sensor.
NOTE:
- Install the battery sensor while holding it by hand to prevent rotating.
- Clean the battery cable terminals and apply grease to retard the formation of corrosion.
- Connect the positive terminal of the battery, and then connect the ground terminal to the battery sensor.
- Some DTCs may be detected, so after connecting the ground terminal to the battery sensor, wait for 10 seconds or more and then turn the ignition switch to ON.
- After the battery is installed, initial diagnosis of the electronic throttle control is performed. Wait for 10 seconds or more after turning the ignition switch to ON, and then start the engine.
- For battery replacement procedures, refer to "Battery" of "STARTING/CHARGING SYSTEMS (H4DOTC)". Ref. to STARTING/CHARGING SYSTEMS (H4DOTC)>BATTERY .
Tightening torque:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)