there are no factory seat heaters on the R1200C. On the dresser R1200CL and CLC, there is, and that is controlled by a rocker switch on the handlebar. The passenger seat heater should have a rocker either on the side of the seat or under the right edge of the seat. off, low, and high.
If it is a R1200C, Corbin made a heated seat for this and there is a simple on off switch.
The r1200c is one of the few bmw's made where the seat does not unlatch. It is bolted on. U may have remove the saddlebags(if any) and or the side panels under the fuel tank. these pull off from the bottom. .
The original comes with a backrest(97/98) very comfortable and the back rest can be moved to the rear to support the passenger seat. Practical
adjust the throttle
How do you turn on the car seat automatic mode for the seats to automatically mole to your body when you tart the engine of BMW 750Li series
Buckle the seat belt
Under the motor, tucked up inside the crankcase.
Under the right side chrome air cleaner cover.
click it or ticket
Look here for precise instructions: http://pokiespages.com/pokie/oil.htm
use ignition key in helmet lock on right side of seat turn and seat will unlock. lift main seat up then you can remove the back section.
20W50 is generally recommended by BMW for the boxer engines. They sell their own branded motor oil at the dealerships which is very expensive, but supposedly meets all of the requirements of the engine. You do not need to use synthetic oil.
behind the driver's seat mike's bmw service