The Service manual does not say anything about pairing the battery. Just that the power window and tailgate autoclose function has to relearn. And check all modules for error codes and delete them.
HOW TO DISCONNECT 12V BATTERY TERMINAL
Disconnect 12V battery terminal according to Instruction 1 or Instruction 2 described below.
For vehicles parked by ignition switch OFF, refer to Instruction 2.
INSTRUCTION 1
1. Open the hood.
SEF289H
PCS-4
< PRECAUTION > [IPDM E/R]
PRECAUTIONS
2. Turn key switch to the OFF position with the driver side door opened.
3. Get out of the vehicle and close the driver side door.
4. Wait at least 3 minutes. For vehicle with the engine listed below, remove the battery terminal after a lapse
of the specified time.
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
5. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
INSTRUCTION 2 (FOR VEHICLES PARKED BY IGNITION SWITCH OFF)
1. Unlock the door with intelligent key or remote keyless entry.
NOTE:
At this moment, ACC power is supplied.
2. Open the driver side door.
3. Open the hood.
4. Close the driver side door.
5. Wait at least 3 minutes.
CAUTION:
While waiting, never operate the vehicle such as locking, opening, and closing doors. Violation of
this caution results in the activation of ACC power supply according to the Auto ACC function.
6. Remove 12V battery terminal.
CAUTION:
After installing 12V battery, always check self-diagnosis results of all ECUs and erase DTC.
Still There is a counter that reads something and it has to be cleared.
CUMULATIVE BATTERY DISCHARGE CURRENT CLEAR
Description INFOID:0000000011009276
CUMULATIVE BATTERY DISCHARGE CURRENT CLEAR is an operation to clear the cumulative value of
battery discharge current which is memorized in IPDM E/R. This operation is necessary after replaced the battery.
Work Procedure INFOID:0000000011009277
1.CLEAR CUMULATIVE BATTERY DISCHARGE CURRENT VALUE
1. Turn ignition switch ON.
2. Select "CML B/DCHRG CRNT CLEAR" in "Work Support" mode of "IPDM E/R" using CONSULT.
3. Touch "CLEAR" to clear the cumulative value of battery discharge current.
My theory is that when removing the battery and connecting the cars pos and neg lead together, it sets all modules to theyr basic values.
Sorted that way wife's 8 gen civic rain sesnor problem after getting it back from body repair shop. It wiped almost all the time with no rain.
Did the same way, disconnected both leads from the battery, hold them together about 20 sec and reconnected the leads. Rain sensor worked again.
