Best Answer

Wrong Answer:

i have nover heard of being able to replace the mast, most the ones that i have worked on you will have to replace the comlete motor and assembly with mast.

Correct Answer:

The above answer is incorrect as the question pertains to the Lexus SC 300 / 400. My answer is probably true for most Lexus vehicles (it has been my experience that they utilize nearly the same engineering for most common pieces.) Although I've never heard of being able to "nover" anything.

First make sure you only need the mast assembly. If when turning on or off the radio you hear the antenna motor turning its gears in attempt to raise or lower the antenna, then you are good to go. If not, you will need to replace the complete motor housing (which should always come with a new antenna mast assembly.)

Next Google 'Your Vehicle' Replacement Antenna Mast, where 'Your Vehicle' is the year and model of your vehicle. So, 92 SC400 Replacement Antenna Mast in the case above. Of course, the mast assembly is interchangeable for all SC300/400 models from 1992 to 2000. You will notice around the web they sell for about 50 bucks, but if you check eBay you can typically find them for 15 to 20 dollars shipped. At this point if your motor was broken you should search for, Complete Antenna Replacement Unit. They can be had on eBay, used but with a brand new mast, for 60 to 100 dollars shipped.

If all you need to do is replace the mast, utilizing a flathead screw driver and a mallet (preferably rubber), tap the round locking nut on the top of your rear, drivers side quarter panel to loosen it, thus allowing it to be removed. Pull the antenna and mast out of the motor housing. Make sure that it is the same length as the replacement mast, if it's not then you've got some broken pieces inside the motor. If that's the case you're going to need to clear out the trunk panels in order to gain access to the motor. Remove the motor from it's mounting brackets and fish out the remaining plastic piece or pieces.

Once you have either replaced the motor or removed the mast, simply slide the lock washer and locking nut over the mast and insert the mast into the hole left in the quarter panel. Ensure that the business end of the mast is inserted into the motor housing and push down on the mast seating it as deep into the motor as it will go. Loosely screw down the locking nut, just in case you need to trouble shoot the next step.

Turn on the radio. The motor should lower, then raise in an attempt to grab the new antenna. If it fails to do so, make sure that the mast was properly inserted into the motor. Nine times out of ten if something goes wrong at this point it's because the plastic end isn't properly seated into the motor housing. After the motor is able to raise and lower the antenna, secure the locking nut. If all went well the antenna will be successfully installed leaving nothing to do but enjoy the silent radio waves as they stream music into your audio system through your newly installed power antenna!

User Avatar

Wiki User

โˆ™ 2011-09-12 21:00:57
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you replace the mast on a 1992 Lexus sc 400 antenna?
Write your answer...
Still have questions?
magnify glass
Related questions

How do you replace power antenna mast?

how do I replace a power antenna on my jeep Cherokee 1992

How do you replace the old antenna mast on a power antenna for a 93 Jeep Grand Cherokee?

Go to They have a replacement mast for the power antenna for $14.95 + shipping.

How do you replace the antenna on a 1998 VW Beetle?

Buy a new mast and it just screws on.

How do you replace broken antenna mast for 1994 Lexus LS 400?

pa purr e zaan la wachawa nu khpala ba theek she da kanjere na paydaa

How do you replace an antenna on a 98 Jeep Cherokee?

The antenna mast screws into the antenna mount on the fender. Unscrew the old one and crew in the new one. If you need to replace the entire antenna mount, you will need a new antenna mount assembly with antenna cable.

How do you replace a 1996 infinity I30 antenna mast?

Begin by removing the wiring harness from the bottom of your antenna. Remove the antenna retaining nuts. Reverse the process to install your new antenna.

How do you Replace the antenna mast on a Volvo s70?

Begin by removing the wiring harness from your Volvo antenna. Remove the antenna retaining nuts. The antenna will come off. Reverse the process to install your new antenna.

Can you replace power antenna on 99 4 runner without replacing it with a power antenna?

There are a lot of aftermarket antenna masts that you can get to fit your 4 runner and if you do decide to go with a fixed mast just make sure that you make sure that the wiring harness at the mast doesn't ground out on any metal. Other than that there is no problem with replacing it with a fixed mast antenna.

How do you replace a 1994 Honda Prelude antenna?

You would need to get a tool to remove the notched chrome piece that holds the antenna mast, or carefully use pliers to unscrew it out. After you remove that, the antenna itself is held by a 10mm bolt. to get to it you'll need to open up the trunk lining near the antenna location and remove that bolt. Then, pull the antenna far enough to disconnect the antenna wire and power. Assuming the antenna motor is still functional, you can then replace the antenna mast with a new one. Or, you can install an aftermarket rubber antenna.

How do you replace radio antenna on 87 volkswagen cabriolet?

the actual antenna mast can be accessed from underneath the driver-side fender flare. Hope that gets you on your way!

How do you install antenna on Mercedes e320?

The antenna assembly is accessed from the inside of the trunk by removing the panels. If you just want to replace the mast try this link.How_do_you_replace_an_antenna_on_a_mercedes_300EHope this helps.

How do you install a power antenna mast or antenna on a four-door 1992 Acura Legend?

go to buy the shaft and follow their easy instructions, I did it works great

People also asked