Originally Posted by Rockville

unless you have too. You can lever the cap on the driver's door handle at the little groove at the bottom. The plastic cap comes off but is more difficult to put back on. You press the release for the metal key on the key fob and pull the metal key out and unlock the door with it. If you have a dead car battery you will now need a jump start so pop the hood. Once you have jumpers connected put your foot on the brake and push the start button when you see the green light.

Earlier in the thread there was a question that implied that your seat and mirror positions are related to the smartkey. Not on the Lexus. That is why there is no confusion over whose key is recognized if both are present. If both smartkeys are present and one is left in the car it will not lock however....

If the smartkey's battery is low hold it right next to the start button and there should be enough residual signal to start the car.

As Wolverine stated the trunk mechanical key lock only unlocks the trunk.

Originally Posted by hashs99

which is true?? Is there a recognition or not?

Originally Posted by gstois

There is recognition, if you customize the setting. I have it set on my 350.

Originally Posted by diablo1

Yes, for valet parking, they recommend you manually lock the glove compartment and trunk, take the physical key part with you, and leave the remote control part of the key with the valet. I'm not sure how that works exactly, but I just read this in the manual yesterday.

Originally Posted by is350

off topic, but just wondering what is this key for???

i thought the IS have no key hole?

Originally Posted by fz1

Originally Posted by kensteele
That wouldn't be practical since that would mean the key went undetected and then the car locked, it could possibly go undetected and lock when it shouldn't (as in you didn't walk away or the remote battery went dead). Besides, I like to keep my car unlocked in my garage.

Originally Posted by ShooExpert

Why not? That is the way the car should work. The Corvette unlocks the dorr for you when you get within a certain distance and after you get out of the car it locks the doors for you after a certain distance. That way you don't have to mess around with the fob at all.

Originally Posted by mkivbadger

I apologize in advance if this has already been covered, but I searched and didn't find a clear answer.

My wife and I just ordered an IS350 and she asked a question that neither I nor the Lexus salesman knew the answer:

With the Smart Key - what happens if/when the Smart Key battery dies? There is no key way in the doors. Does this mean that you have to use the auxiliary key and crawl through the trunk?

Then what? With a dead battey in the Smart Key, could you still start the car?

Thanks!

Originally Posted by ShooExpert

Why not? That is the way the car should work. The Corvette unlocks the dorr for you when you get within a certain distance and after you get out of the car it locks the doors for you after a certain distance. That way you don't have to mess around with the fob at all.