The only auto feature mention in the owner book is on page 3-15:

"Push the UNLOCK button on the intelligent Key once.

Any door should be opened within 1 minute after the door is unlocked. Otherwise all the doors will be locked again automatically."

It will lock itself only after a false unlock - that is if you unlock the car but don't open any of the doors within 5 minutes.

Mine also does that. If I unlock it with the button on the handle but do not open any of the doors within a few minutes, it locks them again automatically . On the other hand if I do open a door and shut it they stay unlocked, unless I lock them again.

^^ that's true

It's actually a great safety feature. Prevents some crazy dude from walking up to your car and trying to open the door while you're sitting at a red light. And I never have to manually unlock my car whenever I park it.

My car did not come like that when it was delivered to me, but I asked the dealership to program it so it would do that. Apparently there are a number of features that can be programmed by the dealership if you ask them, since they don't come from the factory that way. My assumption would be that they can do that with the '07s as well. So, it you would prefer it to do that, then I would call the dealer and ask them if they can.

Nice feature! Occasionally, when I park in a less than stellar area, I'm paranoid about accidentally unlocking the door while the key is in my pocket as I walk away from the car (happened only once or twice in a few years with my previous car, but now it makes me cautious if I'm parked in public in a not too safe area). With the G35's automatic lock feature, it would at least lock my car automatically just in case.

Just came from the service department and they said this function is not possible. Maybe I talked to the wrong guy but he said they aren't able to turn on this feature and that the car doesn't even have the capablity to do this.. I'm going to try again with someone else. Hope you guys have better luck and work with someone that knows a little bit more about the car

I too miss the auto lock feature I had in my Pacifica. Above 5mph the doors would lock. Shut off the car, open the door and all doors would unlock (you could turn that feature off). It's a great safety feature like someone else mentioned, to prevent someone from walking up to your car and opening the door (when you live in a major city like LA, and you have a hot car such as the G35, it's a nice feature). Not sure why people would hate this feature. Now I have to manually lock all the doors, and then unlock it to get out. Gonna check with my dealer to see if this can be changed.

Pretty sure its a dealer programable feature. I have a list of those features somwhere here.

Yes, the previous gen does it as well.

I would have thought that if the intellikey is not within range of the car, the car should lock it's self, otherwise, what's the point of the intellikey if you have to take it in and out of your pocket/purse to secure or enter the car.

If the car is locked and you approach with the key, does the car unlock and all you need to do is push the button on the door handle? so you can keep the key in your pocket.

If you drive the car, shut it off and walk away, the car doesn't lock? it stays unlocked for anyone to just open the door? so what method is everyone using to lock the doors? are you taking the key out of your pocket. I would think there should be a setting to lock the doors if the key isn't present. of which could be over ridden by pressing the intellikey buttons.

The car doesn't lock or unlock automatically, you just push the button on the door handle to lock/unlock and you can keep the key in your pocket all the time.

Ah cool, didn't know the handle button also served to lock... does it do anything else? i.e. if you hold it, pop the trunk?

If you press it once it opens the drivers door, press it twice it opens all doors and when it is unlocked 1 press locks all doors (assuming you have selective unlock activated in the settings menu). The trunk has it's own button.

My 04 did not lock on its own, so when I had my Python alarm installed, I had that added to the functions. Now I unlock the car with the Python remote and when I start the car, all the doors lock about 2 seconds later. I like this. It does not unlock automatically when I stop the car, and I like it to stay locked until I'm ready to leave. I don't know if it can be programmed to unlock automatically. I also had it programmed to open the trunk and roll the windows down AND up (although I almost never use the latter).

KP Technologies (www.kptechnologies.com) makes a device that will lock the doors and one that will allow remote window raising also, if you wish.

Has anyone found a way to turn on the automatic lock/unlock function without visiting the dealer? I'm speaking of the function that automatically locks the doors when the transmission is put in Drive, or a certain speed is reached.

Thanks