how do you reset the service wrench on 1998 mercedes benz c230 its at 1200. on 1998 Mercedes-Benz C230

its at 1200 right now would like to no more about it and how to fix it thanks.

Asked by for the 1998 Mercedes-Benz C230
In drivers seat, all doors closed, turn key to run, engine off. Within 4 seconds push the 'O' button, for the odometer, twice. Within 10 seconds turn the key off, to lock position, where you can take the key out. Press and hold the 'O' button again while turning the key on, after about 10 seconds a signal will sound, and the display should show 10,000 and release the 'O' button.
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