My '01 Maxima SE used to flash the blinker lights and sound the horn when locking the car using the key fob. All of a sudden only the lights flash no horn. This was extremely useful when parking at the mall and then coming out trying to locate the car. Did I somehow put it into 'silent mode' , and if so how do I get it back to normal. Any help would be greatly appreciated.

 

Just look at the back of the key fob for instructions:

'PRESS BOTH
LOCK & UNLOCK 2SEC
BEEP <---> QUIET'