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96 E320(traded), 99 S500, 02 CLK430 Cabriolet, 07 200T(traded), 11 200T
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280 Posts
Discussion Starter #1
Only the top black plastic section and the first chrome section of the antenna mast extended.

The middle chrome section(s) got stuck and won't extend. Motor is working, antenna extends and retracts, just not to the full length.

With the mast half raised, some of the AM high frequency stations has poor receiption. Not sure if it is related to the antenna not in full length extension.

Any idea how to fix this? What part do I need to consider for replacement. Thanks.
 

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'14 E350, '07 CLK350, '01 SLK320
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1,148 Posts
I would try extending (or removing) the mast and lubricating it with some silicone spray. Give it a good shot and let it soak down into the segments and see if that loosens it up. Don't forget to wipe off the excess.

If you decide to replace it, stay away from the no-name ebay parts. They are complete junk.
 

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99 S320 (Sold at 280,000 miles) 2010 S550, 2008 C300, 08 SLK
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437 Posts
If the above mentioned lub does not yeild results, the teeth in the tether strip may be stripped. If you go the replacement route, again as bobs stated, stay away from the after market ones. Becker is the way to go. I replaced mine last year. Not a big deal at all. Just peel away the trunk lining and it all becomes obvious.
 

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1997 S500V, 1999 S500 grand edition, 2006 s65 amg
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7,356 Posts
Original is Hirschmann. Now if you take the mast out and the mast is not stripped then the main gear might be damaged. if the motor works the antenna can be rebuilt for about $60
 
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