Many people think, that a weak turning signal lever is caused by hard rubber boot over the lever. It may be true to some degree, but main issue is worn tip inside the lever mechanism.
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On the right is 18 years old tip from a turn signal lever and on the left is new looking tip from a wipers lever.
These tips slide inside grooves, but when the tip is dull, it will not hold inside a groove and fall out easily.

Getting the column out

To get the column out you need to remove the steering wheel and both plastic covers. To remove steering wheel you can use other guide on this site, but basically:

  1. Unplug the battery
  2. Remove three screws holding driver airbag (inbus 5) and its connectors
  3. Remove steering wheel (24mm)
  4. Remove bottom cover three screws (inbus 3) and cover itself
  5. Remove two screws (inbus 3) from top cover
  6. Unplug all the connectors and unscrew one brass screw (inbus 5) holding the column
  7. remove the column - watch out for the plastic piece on the top, so you won't break it like I did (n)

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Getting things done

Now that you have the colmn outside, you can start disassembling.
First of all remove three phillips screws from the clock spring. Then remove four screws from body of the column. Don't forget to remove the brass clip from back site. Then you can carefuly unhook 4 plastic clips from top and bottom and separate the colmn into two pieces.
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If everything went well, you should have back piece with both levers still inside
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Then you can remove the levers and check the tips for wear. It is also a good idea to clean every contact surface you see with contact cleaner or alcohol and q-tip.
Since you can not buy just this tip you have a few options what to do:

  1. just swap the two tips, since wipers should hold fine like this
  2. sharpen the worn tip (and swap it)
  3. get second column and use the good tip from it

You can also stretch the springs that push those tips

Now just grease everything with a fresh grease and put it back together. Watch out for a light selector rod - it has to go between two plastic pieces, or you won't be able to turn on the lights. Then just snap everything back together, test if everything works and put it back into a car.

You can also fit a cruise control lever if you want.

I hope this guide helped you (y)
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