Ok, so I was successful in programming the HomeLink to my garage door opener, but this disabled the HomeLink of my wife's car and 3 other handheld remotes.. Help?

 

Looks like you just reset opener when you programming Maxima.
Only reprogramming wife car, and other remotes will fix the problem.

 

+1
This happens to me every time I program a new car.... Have to reprogram them all very carefully.

 

Yes, i've deactivated all openers in range setting this up. After 4 tries, and with wife's help, this was successful. Lol.

 

This system is unnecessarily messy. My wife and I are living between two houses at the present time, one with two garage doors and one with three. Every time we get one vehicle right, the others are messed up.

 

Yup. Always have the same problem. This time we were programming a new keypad on the outside and two Nissans. Starting with the keypad, then did my wife's new Murano, and interestingly enough did not have to reprogram my 2016 Maxima.