Went through the car wash with antenna up! Found instructions on replacing:
What you have to do is, with the key in the ignition switch "LOCK" position, press the "AM"and "DISC"buttons on the radio simultaneously with turning the ignition switch to "ACC." Then the radio"LCD"display will read "ANT"and the antenna mast will hyper-extend, disengaging the cable. With the ignition switch still in "ACC," the new cable is inserted to a full stop into the motor antenna assembly through the mast pipe hole in the body panel, with the teeth on the antenna cable toward the rear of the vehicle. Then, as the person in the driver's seat switches the key to "LOCK," feed the cable and mast pipe in. After it retracts completely, replace the retaining nut.
The only issue is "ANT" will not show on the LCD display and retraction is not fully extended. Any advice?

 

Here is a copy of the actual TSB in case you don’t have it. https://www.clublexus.com/forums/att...eplacement.pdf

only advice try again following the TSB

 

Thank you. That is the document I was following, still unable to see ANT when it extracts. It does go in and out of the track without difficulty.

 

I would check the length of the track on the new one versus what came out of the broken one. If they are substantially different some of the track may still be in the housing.

 

Read my post in the other thread below..works like a charm.