my abs and brake light comes on sometimes.if i turn the car off and wait a bit it goes off, it's not everytime

either the emc is goig bad or you have a speed sensor going bad I would think but not possitive

You can hook up a scan tool and get ABS codes, resistances and watch wheel speed at individual speeds while someone else drives. Usually, it's a Wheel Speed sensor. In my world of working Police Interceptors, it's often an axle bearing gone bad allowing the toothed sensor to bounce. A few ABS Modules have failed too. You really should hook up a scan tool before anything else.

I have a 06' Crown Police Interceptor. Why do it have 4 sensors? My engine light kept coming on so my mechanic replaced one sensor. However, 1 day later the engine light is back on. What are my options?

dirty abs sensors or loose wire in harness in front sensors !!!no codes that is what i would check???

What makes my abs light goes on and off on a 1998 p71 crown vic