I don't know how many of you all know this, or if this has been addressed before, but Pete at Lexus of Westminster let me know that one touch dialing can be used while your driving the car, and also showed me how to program the numbers.
The only real limitation, is you can only program 18 numbers for one touch.

 

That function is on all the gen 4 and gen 5 navigation systems.

 

If you couldn't use one touch dialing while driving, the system would basically be useless.

 

It is a pretty nice feature to have.

 

Please advise how this is done since I know that it will work to about 10MPH, but there after it is useless.

Thanks!

 

you can dial, but it just wont show the phone # on the screen while you are driving. The buttons still work though -- just have to memorize what number is assigned to each button

 

You can transfer entries from your phonebook to the one touch entries (18 of them). If you label the numbers in the phone book like (Home or John Smith - Cell, etc) you can organize each entry on each touch screen. The number that is displayed with the name disappears after you start moving the vehicle. But the one touch dialing is available anytime. This is Lexus's way of at least allowing you to dial the phone while the car is in motion. I guess the thinking is, you can look away for a second to hit one button instead of taking a few seconds longer to punch in the numbers on the screen, even though we do it all the time with our cell phones now. If you want to actually dial a number that is not in a one touch entry, you have to either use your actual cell phone or wait until the vehicle has stopped moving to use the cars phone system.

As I stated before, in my opinion if you could not use this one touch dialing while moving, the system would be basically useless, since you would not be able to dial from the cars phone system while driving. Actually pretty lame when you think about it. Isn't the whole point of the Bluetooth system suppose to be hands free? Acura has had voice dialing in their BT system for years now.

Luckily the Gen 5 allows voice dialing, unfortunately all of us with the Gen 4 are screwed.

 

After you program, the name shows on the one touch dial screen.

 

Thank you all!!!!

 

so this is the only provider that makes it mandatory to populate the 17 (no.6 is a redial function and cannot be programmed) one touch dials from numbers that you have called or received calls from. If you go to the trouble to transfer your favorite phone numbers into the cars bluetooth you can then move the names and numbers easily into one touch dials in settings provided you're not on Verizon....The Gen 5 Nav eliminates this problem as it allows you to manually input multiple numbers into your car's bluetooth phonebook. Gen. 5 allows voice number dialing also. This will be available on the '07 GS350/430/450h. The new VGA screen is brighter and has improved graphics too. Since the GS is standard with a screen the only thing missing would be a standard back up camera....

Rock