1996 W140 Parktronic Issue

Discussion in 'Electronics' started by jjrodger, Mar 21, 2014.

  1. jjrodger

    jjrodger Hardcore MB Enthusiast

    Apr 7, 2004
    I am presently running a 1996 w140 S420 saloon.

    The factory fit parktronic is displaying the following odd behaviour. The front system is activating at all speeds below about 50mph, rather than only below about 15mph. This is somewhat irritating (especially at night) if not the end of the world.

    I have looked at the wiring diagram (attached) and done a bit of searching, but nothing obvious leaps out at me.

    Any thoughts?

    As always, all help is very grateful appreciated.
    View attachment 6327.pdf
  2. guydewdney

    guydewdney Hardcore MB Enthusiast

    Feb 14, 2004
    Porlock, Zomerzet
    906 Sprinter 313cdi
    Bet a speed sensor has gone south. Get codes read?

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