Question about 1993 Mercedes-Benz E-Class

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The automatic antenna does not rise when the radio

The automatic antenna does not rise on my 1993 300E (2.8) when the radio is turned on. Checked the fuse, which is o.k.

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I disagree with Duane. What you need to do is turn on the ignition and power up the radio. If you hear the motor trying to work, you can try giving gentle assistance to the antenna as it may need cleaning/greasing. Turn the radio back off. You can have someone help you or you can hit ON and quickly step out and gently try to assist the antenna up. If it goes up, it probably needs to be cleaned and greased. This happened on my 300E before.

If you hear NOTHING from the antenna motor, you may need to check the cable that connects to the motor. It might be loose. If you can verify that power is reaching the motor and you are getting no result, then the motor may be burned out. But check all of the alternatives first as replacing the motor itself is much more expensive than the cables and such.

Posted on Jan 08, 2011

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This can go each of the ways previously mentioned. There is also one more issue to look at other than power to the unit or mast broken. There is a control board either in or on the unit then over time corrodes due to moisture. Try going to a junkyard if the other answers dont work and get a new control board and replace.
Good Luck.

Posted on Nov 01, 2011

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The motor is bad, need a new one. Probably in the winter it broke, trying to force the gears as it tried to break ice and snow.

Posted on Jul 09, 2010

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please rate service.

Automatic Electric Antenna
Removal
  1. Lower electric antenna (18850) .
  1. Remove rear retaining screws of RH front wheel splash shield for access to antenna lower retaining bolt.
  1. Remove lower retaining bolt.
  1. Remove radio antenna nut (18865) from top of motor tube and remove electric antenna through fender/splash shield access.
  1. Disconnect signal cable and motor wire connector(s).
Installation
  1. To install, reverse Removal procedure.
  1. Tighten top radio antenna nut to 6-8 Nm (54-70 lb-in).
  1. Tighten lower electric antenna retaining bolt to 5.8-7.8 Nm (51-69 lb-in).
  1. Check operation of electric antenna and radio chassis .

    Automatic Electric Antenna


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mast
Mast, Power NOTE: A power antenna mast which is bent or broken can be replaced without replacing the motor and tube assembly.
Removal
  1. Remove radio antenna nut (18865) and radio antenna stanchion (18919) .

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  1. Loosen retaining nut inside tube using 14 mm (9/16 inch) socket, and slide nut part-way up mast.
  1. Raise antenna to run plastic drive wire at bottom of mast out of motor. Note direction of teeth on plastic drive wire.
  1. Saw off damaged portion of antenna mast. Remove burrs from mast and slide nut and contact tube off stationary tube.
Installation
  1. With the teeth on the plastic drive wire facing toward motor on antenna, push end of plastic drive wire of replacement mast assembly down into tube. Push it around curve at bottom of tube until end enters drive mechanism.
  1. Run motor down while pushing on plastic drive wire until about 305 mm (12 inch) of wire has been drawn into the tube. Stop motor and insert bottom of antenna mast into tube. Lower mast.
  1. Slide contact tube and radio antenna nut down antenna mast. Tighten nut to 0.45 Nm (4 lb-in).

  2. Raise and lower antenna several times to ensure proper operation.
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