Battery registration after replacement?

[TypeRD]

This is the first time a Honda I've owned required a reset/recalibrate when disconnecting power. Whenever I disconnect/reconnect power or certain sensors, my 2022 Civic Sport Touring throws error codes en masse. I just connect my OBD2 scanner, hit clear all codes, restart engine, and everything is good again.

Sometimes they don’t like to be completely disconnected from a power source. It can make the ECU freak out and in some cases it might reset some of your custom settings or cause the alarm to go off…things like that. Once, when I had AutoZone replace a battery in my FA5, they hooked up a dummy load to the ECU to prevent that from happening. It seems to be more of a precaution than a necessity. I’ve changed several batteries since then and never needed a dummy load…though I do recall that in our older CRV I had to unlock radio again.

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[ctechauto]

Sometimes they don’t like to be completely disconnected from a power source. It can make the ECU freak out and in some cases it might reset some of your custom settings and things like that. Once, when I had AutoZone replace a battery in my FA5, they hooked up a dummy load to the ECU to prevent that from happening. It seems to be more of a precaution than a necessity. I’ve changed several batteries since then and never needed a dummy load.

Its not really a precaution, rather a workaround to CYA because as I mentioned about the resetting of the voltage monitor through HDS or similar diagnostic tool, AutoZone wouldnt have or be using (nor would I expect them to)...just in case the particular car needs it reset.

I have not needed to do said FSM procedure for the reset from any customer I've replaced batteries or disconnected the battery for, for any FK8 or FL5.