Antenna Replacement - '95 SC300

Mar 17, 2005 6 Replies

I noticed that the antenna on my 1995 SC300 was not extending all the way like it used to. It is the original mast. It still goes up and down when it should, it just doesn't go all the way up anymore.



I assumed that a new antenna mast would let it extend fully again.



I bought an official LEXUS replacement mast. (I always use official manufacturer parts on my Lexus and Toyota cars)



I removed the cap nut on the mast, and then removed the plastic spacer at the fender.



With the key in the ignition and in the LOCK position, I pressed and held the [AM] and [CD] buttons on the stereo. (This "magic" is supposed to eject the antenna.)



I turned the key to Accessory.



The stereo display showed "AnT".



The antenna went up, but the antenna mast did not eject. It didn't go any higher than it did when I turned the radio on in normal conditions. It didn't sound like it was straining to push the antenna out.



Have I missed something, or do I have to disassemble the automatic antenna mechanism?



Thanks for your help.



Ken - West Union, SC Population 270 + 2 (counting dogs and chickens) "If you only have a hammer, you tend to see every problem as a nail."



- Abraham H. Maslow


Does anyone have any suggestions for how to remove the old antenna mast?

Thanks,

Ken

Follow these directions - they should be the same for your car:

formatting link
luck!

Thanks for your input Ray O. I don't want to seem ungrateful, but the web site wasn't helpful. In fact these instructions can not be followed, since they are either self contradictory or they leave out enough steps to make them useless.

The web site you refered me to said, "These instructions work only if power antenna motor runs when car stereo is turned on/off. See guide below for applications and ordering new antenna mast."

My antenna does go up when I turn the radio on and it goes down when I turn the radio off.

In the fourth picture on that web site, it simply says to turn the radio on and remove the antenna. Here is the exact text included with the picture. "1) Turn car stereo on and remove antenna mast. Turn off ignition."

When I turn the radio on (after removing the antenna nut, the antenna goes up and stops. It does not release the antenna and I can not pull it out.

Then the instructions say to turn the ignition off.

Two pictures later after the instructions tell you to insert the new antenna, the instructions say to turn the radio off, but now the ignition is off and the radio will have gone off with the ignition.

Thanks again for trying Ray O.

Does anyone else have any helpful suggestions.

Ken - West Union, SC Population 270 + 2 (counting dogs and chickens) "If you only have a hammer, you tend to see every problem as a nail."

- Abraham H. Maslow

OK, if the antenna does not come out with the locknut removed and then turning on the radio, then the next step is to have a helper turn on the radio while you stand by the antenna. As the antenna extends, grab the mast as close to the mounting point as you can and pull straight up when the antenna is almost fully extended but before the motor stops turning.

The geared drive cable is wound around a drum, much like film threaded in a

35 mm camera and sometimes you have to help it un-catch.

When you re-install the antenna, you will have to jiggle the drive cable until it catches on the drum and starts to wind in, being careful to get the mast aligned with the hole as soon as the cable catches. It will probably take several on-off cycles to get it to catch.

Good luck!

Hi Ray O,

Thanks again. I already tried that. I had my wife turn on the radio while I pulled as hard as I could. We did this several times and it didn't help.

Previously I have replaced the mast on a '93 Camry and a '91 Celica. It would have been simple if the plastic cable had not been broken in both. Just like you said, Remove the cap, turn on the radio and out it comes. The Camry and Celica run the motor until the antenna stalls because it can not go any farther, I don't know if it senses the stall, or it just times out and shuts off power to the motor.

On another web site (Sorry I can't remember which one) I found some instructions that said Lexus radios manage the height of the antenna. It puts it higher for AM or FM and lower for the other. Then it said the procedure for removing the antenna was:

1) Turn the key off 2) Remove the nut 3) Press the AM and the DISC buttons (and hold them) 4) Turn the key to ACC 5) The radio display will say ANT 6) The antenna motor will run an extra long time to eject the antenna

7) Release the AM and DISC buttons

8) Leave the key on ACC

9) Compare the length of the plastic gear/cable

10) If they are the same, thread the new plastic gear/cable into the hole with the gear facing to the rear. 11) Turn the key off. The antenna motor will run an extra long time to pull the antenna all the way in. 12) Replace the nut

13) If the length of the old and new cables is different, you must disassemble the motor to get the broken piece out.

I have tried this procedure and every part of it happens, up to step #6 when the antenna does not eject. The radio display does indeed display "AnT" just like step #5.

Thanks again.

Ken

Oh well, sorry it didn't work - good luck!

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required