I replaced the battery with new Energizer 2032 battery, delivered today from Amazon.
key battery warning did not go out. pulled battery, checked on battery tester and voltage. OK.
Then found old Energizer two pack from store.
checked voltage etc. ok.
still did had key battery low error.
Next found very old Maxell. check voltage. all were 3.31 to 3.35 v
This one worked no error.
It is interesting that one seller of unknown to me brand, said specifically, NOT FOR CAR REMOTES
2018 Pathfinder.
Feedback please