The loop antenna of the electronic immobilizer may fail. As a result, the motor does not get the necessary signal to trigger a start operation. The loop antenna should be included in the baggage of every BMW driver. Very easy to assemble:
1. Deduct the cable plug from the old antenna.
2. Connecting new antenna.
3. Holding spare key to the ring antenna.
4. Start with original key.

K72 BMW F650GS and F800GS
BMW K40
BMW K43
BMW K44
BMW R1200GS
BMW R1200R
BMW R1200ST
BMW R1200RT
BMW R1200S