Recently a mechanic replaced my steering box and aligned my steering wheel. My Turn signals no longer work correctly. If I am at or close to a dead stop and apply my signal they come on correctly and turn off when the steering is turned back in the opposite direction like normal. If I am driving with much forward movement and apply the signal I have to turn them off manually at the completion of the turn. Do you think he may have applied lubrication causing a lack of friction. I'm not really sure what is supposed to turn them on and off.

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