Join Date: Dec 2006
Location: Pasadena, CA, USA
Battery Tender Goes to Error after 2/3 Full - BMW Charger
I have a 07R1200RT. When I bought the bike I purchased the BMW battery tender. Went home plugged it in (and not in any particular order or procedure - bike turned off plugged tender into wall then into accessory socket) - always worked like a charm.
Months pass and I decided to have my dealer install my Garmin 2820 with XM puck antenna, and Valentine 1 Radar all routed through an Autocom. Took the bike home and have not been able to use the tender since without it going to error. When it goes to error there is a light clicking sound. When I went to locate the source of the sound (took off the seat) I noticed that the clicking sound coordinated with the power light on the autocom blinking. So bike sat over the summer (I know - for shame) and ofcourse lost the battery. Got a new battery. Same issue.
Took the bike and tender to the dealer - they set up and let it run overnight and OF COURSE it worked fine - no error. They gave me a sheet of paper from BMW indicating that the "proper" procedure - that I never used before the gps and valentine install and it worked fine. I followed the procedure exactly as printed and voila - same problem. I even switched outlets in the garage - just in case.
I do know that the power for the gps, valentine, etc, was hooked up through the accessory socket. Dealer indicates that should not be a problem. I have tried the other socket under the passenger seat - same result.
HELP - any ideas suggestions?
"But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security." - Declaration of Independence