When i step on the gas the dash lights go out including my spedometer,my abs light goes on and my blower goes out also my radio gets staticy and quiet(music is not, static is).. when i step on the brakes and get down to about 20 or so mph they come back on and if I'm sitting at the light long enough the blower will come back on

SOURCE: ABS messed up

abs relay
change it before your breaks dont work at all

SOURCE: 2001 Mercury Grand Marquis brake and ABS dash lights on and off

The red brake light is the key here. That usually indicateds a hydraulic problem. Check you fluid level in master cylinder and see if it is low. Also the level indicator sensor there in the master cylinder maybe sticking or corrioded. If ABS sees the red brake light it will shut off and turn on the ABS light,also traction control would be disabled as well.

SOURCE: I own a 2004 Mercury Mountaineer, and the ABS

On a Car like that you have little sensors on each one of the wheels. These sensors are small, delicate and finicky. You probably have a loose one or when the wheel heats up or reaches a certain speed, highway driving, it loses the connection and the light comes on.
The best way to fix this is go to a shop. Since the answer lies in the computer somewhere they need to check it. Note that the computer on your car stores the data when this happens and they should download the stored data if everything " seems fine ". Hope that helps

Josh

• 122 Answers
• Posted on Apr 19, 2010

SOURCE: at highway speeds brake warning lights come on

might be a wheel speed sensor

SOURCE: I have head and brake light but no tail and dash board light

I have a 1993 grand marquis n all my lights come except the taillights no blown bulbs check all d fuses no bad ones can I just get a good answer to my problem