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Old 12-02-2012, 10:10 AM   #394
jensdad
Registered User
 
Join Date: Nov 2012
Location: NH
Posts: 5
My Ride: 330Ci
as noted prev., I have the old battery out. When I opened up the fob, I noticed a whitish film or corrosion on the circuit board in the area of the squiggly (antenna) line and going up the board a bit. I tested the old battery & got 3v. I placed the old battery back in the battery clamshell holder and tested the actual battery contacts on the circuit board, 3v. Good. So I have battery contact. I then put the tester probes on each side of the little push button switch that opens the doors (there are 3 switches). I had my wife use a toothpick and push down that switch, nothing, no reading just 000. I then did the same on the center switch, got 3 v. I didn't test the last switch. I wonder if I have a bad "door opener" switch due to past corrosion? I will still install the new battery when it's delivered but corrosion may have damaged the circuit board. I'll keep you posted.
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