when locking car with remote horn does not sound on 2001 Nissan Quest

The horn no longer "toots" when I lock the doors of my 2001 Quest with the key fob remote. Nor do the lights flash when I unlock it

Asked by for the 2001 Nissan Quest
Check that the fob is set for SECURITY mode and NOT VALET mode, it does make a difference. Good luck.

Ron-subaru master
1 more answer
Your key fob is set to "QUIET". Look at the back of your fob for instructions to set back to "honk" mode.