If your horn ring rattles it is a relatively easy repair.
Obtain from your MB dealer or MB parts supplier 3- A115 464 00 24 plug, steering column.
1- Remove central steering wheel pad.
2- Remove the six nuts and washers holding the wheel to the steering boss.
3- Raise the wheel enough to disconnect the horn wires.
4- Take the wheel to your work bench and invert it.
5- Remove the three Phillips screws
6- Mark the position of the plate so that it goes back in the same location and lift of the plate,horn contacts and ring.
7- You will then see the three plugs that require renewing,remove the old and push in the new plugs using a blunt instrument
(i used a twist drill - not the sharp end )
8- Refit the horn ring in the new plugs,horn contact,round plate and three screws (make sure the three male indentations match up with the female
indentations in the plate)
9- Refit the steering wheel ,connect horn wires and pad.
Well worth the effort.
