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I was about to install one of the back door sensor with a new one that I bought. When I took it out I noticed that there is some blueish paste on it. My question is "Do I have to put some more of that paste on the new or will it be ok without it?"
Yeah, I replaced mine last night. I don't know what that paste is for but what I did was squeezed the black connector and gently pulled the sensor and it came right out. Then I slipped the new sensor all the way in until it snapped and locked. Very easy!!