Actually my cell phone has the option to call then pause for an extension and it works fine....I am going to try to just transfer the the number/extension from my cell phone using a blutooth app on my phone to transfer to the nav system in the rx400, maybe that will work. I know directly inputting the number into the nav didn't work
...not to mention the other problem I stripped the McGARD security socket ordered 2 new ones and both of those stripped due to an apparent overly tight nut, so I hammered on a 3/4'' 1/2 drive 12pt socket and it came right off but I cant get the socket off the nut to do the other 3 because I don't have a strong enough vise and I don't want to bother using a torch so I ended up just ordering 3 more sockets I hate these security lug nuts there is 6 points of contact but the damn things are only a few millimeters deep what a crappy design... oh well