I've only had my lude since october, and have about 2400 miles of driving with it. My 4ws light and abs light were on when i got it and it seemed to be a little louder then usual at idle sometimes. recently its been extremely cold but then soared to the high 50's the past 2 days. In those 2 days, no abs light (even though 4ws is still on) and it runns much smoother and quieter. I'm not complaining, but what the heck happened lol? As long as it stays like this ill be happy. Btw, before i accquired this car, it hadn't been driven in over a year.

 

ABS light on my JDM comes on when the ABS is pumping the brakes back to stop them locking, you can feel it through the bedal when braking hard.

Should not be on all the time.

The 4ws llight is always on when the engine is running so the bulb may have blown.

its possible one of your caliper pistons were ceasing causing the abs light to stay on by the ABS sensor thinking it was locking.