Recently changed mine with a used switch for a S&M issue. In retrospect wish I'd simply tried rotating prior to replacement.

For your situation simple check may be as suggested loosen bolts & rotate. If that doesn't work remove and rotate through travel several times and try it again. Contacts inside get dirty.

One check is what you already did, faulty indication of gear selection.
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I'll tackle that tomorrow and report back. Thanks!

 

Can we please refer to the transmission fault indicators as M&S lights and not an S&M issue?

 

Probably not unless many consider it offensive.


From D2 Workshop Manual:
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I was trying only to inject a little humor.

 

Worked and glad to know you're not S&M or dyslexia phobic.
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How do you get the electrical connection apart without using a hammer and/or wire cutters?

 

Squeeze the connector while pulling the plug, they lock together.

 

Which connector?

 

The wire connection for the "XYZ" switch on the transmission.

**edit**
Also, is there a way to test this switch at all to see if it is indeed dead before I spend the money on a replacement?