semiatic
ABS

ABS light that stays on until you ride off

On a motorbike the ABS light is normally on every time you switch on, and goes out only after the bike has moved off and passed a few km/h, because the ABS cannot check its wheel-speed sensors until the wheels turn. Lit at start-up is normal; still lit after that speed, or coming on while riding, means an ABS fault.

Check your bike's manual — makers differ.

How urgent is it? What each maker says

  • On from switch-on, out once moving: Fine to ride. Yamaha (MT-09, 2021): “In normal operation, the ABS warning light comes on when the vehicle is turned on, and goes off after traveling at a speed of 5 km/h (3 mi/h) or higher.”
  • Flashing from switch-on until 10 km/h: Fine to ride. Triumph (Tiger 1200): “When the ignition switch is turned to the ON position, it is normal that the ABS warning light will flash on and off. The light will continue to flash after engine start-up until the motorcycle first reaches a speed exceeding 6 mph (10 km/h) when it will go off.”
  • Still on after 5 km/h, or comes on while riding: Have it checked soon. Yamaha (MT-09, 2021): “Use extra caution to avoid possible wheel lock during emergency braking. Have a Yamaha dealer check the vehicle as soon as possible.”
  • On continuously above 5 km/h: Stop now. Royal Enfield (Hunter 350): “Do not run the motorcycle incase of ABS indicator lamp is ‘ON’ continuousely above 5 kmph / 3.1 mph.”
  • Lit while riding: Have it checked soon. Triumph (Tiger 1200): “Do not continue to ride for longer than is necessary with the warning light illuminated. In the event of a fault, contact an authorized Triumph dealer as soon as possible to have the fault checked and rectified.”
  • Lit yellow with “ABS failure!”: Have it checked soon. BMW Motorrad (R 1250 GS Adventure): “Onward journey possible. Ride carefully to next specialist workshop.” The manual says the ABS function is not available but it remains possible to continue riding.

What it is for

Watch for it to go out as you ride off. The switch-off speed is in each manual: 5 km/h (3 mph) for Royal Enfield (Hunter 350, Himalayan 450), Yamaha (MT-09), Bajaj (Dominar 250) and BMW (R 1250 GS Adventure, where the light flashes until the self-diagnosis is done); 10 km/h (6 mph) for Triumph (Tiger 1200).

These pages report what each maker’s owner’s manual says, and quote it wherever safety is involved. They are not a diagnosis and add no riding advice of our own; your own bike’s manual is the authority for your model.

What it looks like
The letters ABS, usually in a circle between two curved brackets, lit or flashing from the moment you switch on.
Colour
Yellow on the Bajaj Dominar 250 (“ABS Indicator (Yellow)”); BMW’s manual says the ABS fault symbol “lights up yellow”. The Yamaha, Royal Enfield and Triumph manuals read do not state its colour.
Names makers use
ABS warning light (Yamaha, Triumph); ABS MIL / ABS indicator lamp (Royal Enfield); ABS indicator (Bajaj); ABS self-diagnosis not completed; ABS fault; ABS failure (BMW Motorrad)

Where makes differ

This is the big difference from a car, whose ABS lamp goes out a few seconds after the engine starts. Flashing versus steady differs by maker: BMW flashes it while the self-diagnosis is incomplete and lights it steadily for a fault; Triumph flashes it until 10 km/h, lights it steadily when the rider has switched ABS off and flashes it slowly in its off-road ABS setting (see the ABS off page); Royal Enfield, Yamaha and Bajaj describe a steady light that goes out.

What it does not mean

Lit at switch-on, it does not mean there is a fault. It does not mean the brakes have failed either: the Yamaha, Triumph and BMW manuals say the brakes keep working as ordinary brakes without ABS when ABS is unavailable.

Related

Other symbols with the same shapes

Sources

No standard we could read defines these motorcycle lamps — UN Regulation No. 60 and ISO 2575 cover motorcycle tell-tales, but neither could be read when we checked, so this meaning is taken from 5 makers’ own manuals and support pages, each fetched and read on the date shown:

Written in our own words; quotations are the makers’ wording.