Hi,

I went to the track recently and after doing a warm up lap, my ABS light came on. I tried driving a few gentle laps and then coming into the pits to switch the car off, cool off then go out again.

However, the light woudl still come on after a warm up or a moderately hard lap.

I eventually decided to just drive the hell out of it without ABS, which got me a not half bad lap but also resulted in me locking up in a big skid while heavy braking and flatspotting my tyre.

After coming back to the street, the ABS light has stayed off.

Anyone with suggestions on what migth be wrong?

 

Pull the code when it comes back on.
Maybe the sensor is too far away or something? Take a look under and see if both sides have the same spacing between them.

 

Did you change tires? Brakes? Anything else, other than how hard you were pushing the car?

 

Could be that the sensor is on the verge of being too far away, and under deflection during hard cornering and braking it is intermittently losing signal.

FWIW, my ABS light came on soon after having the right rear bearing replaced on my car. I let it stay on.

ABS = perfect tool for preventing people from learning how to threshold brake!

IMO, not having it can be better at the track. In addition to forcing you to learn how to use the brakes, it allows you to lock all four wheels and keep them locked in the event of a spin. Which is preferable to the possibility of gaining traction at the wrong instant and shooting back across the track. Wheels locked => spinning car follows predictable path.

 

Unless you have some way to adjust the F/R bias of the brakes, it's not a good idea to have a disabled ABS system. The car is designed with too much rear brake bias, and the ABS is relied upon to keep the car stable under heavy braking.

Furthermore, it is not "better at the track" to have the ABS not working. In a spin, if you hit the brakes you will lock them up and they will stay locked up, even with the ABS. The ABS system on the S2000 is pretty capable.