Bob has told us that all the individual LEDs are on in both stop and tail situations.
This means an unusual setup in the LED assembly so that the group of LEDS is fed through different resistors for each of the stop and tail functions to give different brightnesses.
This is copied from my YRV manual and I'm sure it holds pretty much for the Terios too.
If the gears drag and crunch the clutch plate is not releasing fully when you press the pedal, so your clutch cable needs tightening, which is done under the bonnet.
