I am trying to reset the diagnostic codes on my 1995 850 GLT. Haynes says plug into A6 (I've been told A7 as well, but it doesn't work either), hold button for more than 5 seconds, LED will light and stay on, then hold button down for another 5 seconds.
I've made sure to have the ignition on when it needs to be, and to check all the numbers (A1, A2 etc.) before resetting - no luck. I get one quick flash and that's it.
Is there a fault somewhere keeping this from being reset? I get no light patterns on several numbers (not the blanks).
Thanks in advance.
Greg
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