Will programming new fob key invalidate chip keys?

Maintenance/Repairs
1

I have a 2011 8th-gen Honda Civic with a couple transponder keys (the kind with the built-in chip) and one electronic “fob” key that has lock/unlock/panic buttons on it. My wife likes to use the fob key.

Basic problem: The fob key stopped working, and replacing the 1620 wafer battery doesn’t help. Tried cleaning the tiny batt terminals too, didn’t help. The fob electronics appear to be kaput.

There is apparently an easy reprogramming procedure that I could do: I could buy a new replacement fob key, open it up, and switch the electronic innards of it into my old fob key. Then there is a simple procedure for linking the car with the new electronics in the fob key. This is a very cheap solution, it seems.

Question: If I do link a key fob as described above, will it invalidate the link with the simple transponder chip keys for this car? Or should the old transponder chip keys still work?

2

These guys should be able to give you the correct answer. They have a van stationed outside many Costco locations, and it’s likely that there is one reasonably near you.

3

I don’t know if I have any chip keys. Why not just buy two new fobs and be done with it? I have had a new fob programmed for my Acura with no problems and had two new ones for the Pontiac programmed by the dealer. The new fobs made the old ones inactive so maybe just ask the dealer. One place on line sells the replacement rubber insert pad for about $10. That might b3 the issue.

chalk this up to a non responsive response.