techno
Registered user
IBS
IBS is a way of detecting a tail light failure by monitoring the current through it. It is not unique to BMW's bikes though.
If there is no current through the filament, then the bulb has blown and in order for you to have some rearward light, the system then provides a reduced voltage (or limited current) through your brake filament to simulate a tail light.
As an LED panel uses much less power (and therefore less current) the fitting of such will cause the system to 'think' there is a blown bulb (if IBS is on the bike that is) and put some voltage through the brake circuit. This causes the LED panel to appear to be in brake mode all the time. To combat this extra resistance is used in parallel to the LED circuit to draw the extra current.
If you have a normal brake system, you don't need the extra resistance.
This might be a daft question but what is IBS![]()
IBS is a way of detecting a tail light failure by monitoring the current through it. It is not unique to BMW's bikes though.
If there is no current through the filament, then the bulb has blown and in order for you to have some rearward light, the system then provides a reduced voltage (or limited current) through your brake filament to simulate a tail light.
As an LED panel uses much less power (and therefore less current) the fitting of such will cause the system to 'think' there is a blown bulb (if IBS is on the bike that is) and put some voltage through the brake circuit. This causes the LED panel to appear to be in brake mode all the time. To combat this extra resistance is used in parallel to the LED circuit to draw the extra current.
If you have a normal brake system, you don't need the extra resistance.


