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Discussion Starter #1
hi guys. new to the forum. here is my dilemma. 2005 k1200lt with 27000 miles . came home from work and parked the bike in the garage. went out the next morning turned the key on hit the start button. no crank on the starter. lights come on .no clicks, no whirl,no buzz,no nothing.it is in neutral and in forward gear.kill switch is in the middle position.tried another battery no change.after 7 hours of testing i think it has something to do with the silver box in front of the radiator overflow tank. never a problem like this before. i dont think i have an alarm. bought the bike used with one key. no key fob. took the silver box apart . have power to the lead directly from the battery and nothing else even trying the start button. starter will turn over if i jump it. HELP.
 

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Wrencher Extraordinaire
2005 K1200LT
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13,781 Posts
That is the reverser controller and does not effect the starter (exept during reversing). To the best of my knowledge all 05's came with the alarm and central locking. So it could be the immobilizer has activated. You can look under the top case to see if an alerm is in there. Actually you can just remove the rear seat and by the barrel connector at the center rear area there will be a flat two pin connector. If you have that connector you have an alarm. There is an article in the technical section that shows how to bypass the alarm. Alarm Bypass
 

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Welcome Mark
The silver aluminum box is the reversing controler , what it does is lower the voltage to the starter/reverse motor so as to have a proper slow speed rev and the lower voltage is easer on DC electric motors used more than a few seconds at a time . The -12VDC wire for the starter relay goes through the reverse shift linkage micro switch and then into the reverse silver box to complete the circuit .
If it were me I would get help to push start the bike , is not hard just clumsy and easy to drop the big girl , then try the reverse , this will tell you if it is the electric starter motor or the interlocks or starter relay up under the fuel tank .
When trouble shooting BMW motorcycles you can not rely on the frame for a -12 volts , best to go to battery post .

Bob G
 

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Discussion Starter #4
well i looked under the seat and found a two wire flat connector with what looked like to me gray colored wires. where will the alarm be? one dealer told me if you unhook and hook the battery back up the alarm will sound. any truth to that? i will look at the alarm bypass tomorrow. the dealer also told me there was no way to bypass the alarm.reverser box goes back together tomorrow. thanks for all the help guys .
 

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Wrencher Extraordinaire
2005 K1200LT
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13,781 Posts
The dealers don't know everything. We have successfully bypassed all model year alarms. Sure you have to remove the top case and then the plate under that but then you just have to jump two sets of wires and you are running again. If it was the alarm in the first place.
 
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