Ford Mercury Villager 1997 Owner's Manual page 14

Anti-Lock Brake System Warning Light (If Equipped)
To check the anti-lock brake warning light, turn the ignition key
to the ON position. The ABS warning light should glow
momentarily.
NOTE: If it does not glow at all or stays on for a long time,
have your vehicle's electrical system checked
immediately.
Anti-lock brake system warning light
If the anti-lock brake system warning light remains on or
comes on while driving, have the braking system
checked by a qualified service technician as soon as
possible.
NOTE: If a fault occurs in the anti-lock system, and the brake
warning light is not lit, the anti-lock system is disabled
but normal brake function remains operational.
10
WARNING