I have a universal key sorta I recently used my 3rd gen key to open up the door to my friends 4th gen. But his key doesnt open mine. I couldn't start his car though Is it possible that his door lock is really worn down? Or my key maybe? I think mine has more teeth.

 

his door lock could be really worn down.

 

It is possible I think. Cause I remember with my Corrado....I was able to open the driver door with my Maxima key

 

the key should wear out waay before the lock. I recently replaced one of mine, fortunatly I had a spare in new condition to copy.

 

That's fortunate that you had a pristine key to work from. If not, is there a key code somewhere on the car to utilize when cutting a new key?

 

I need to know this info too as my drivers side key cylinder is really really loose.

 

Yeah, take your car to a good locksmith, and they should be able to cut you new keys. Hey man, that clip on your sig is slightly disturbing.

 

look in your glovebox

 

yeah, that signature, what the hell is he doing and where did you get that from??? ohh and for this topic, you can go to nissan and they can send you a new key....right?

 

 

When I got my max the original owner gave me a small metal tag along with the keys, its a serial number. thats probably what your looking for. It's really small, easy to loose.

 

lol..someone should tell that guy to stop ringing his bells.