See "Related Questions" below for more
Its a whole led unit replace whole deal not bulb
Per the Owners Manual, DOT 3 type brake fluid.See "Related Questions" below for moreDOT 3 brake fluid
For a 1997 Mercury Sable : ( DOT 3 brake fluid meeting Ford specification ESA-M6C25-A )
'P'arking or emergency brake
To replace the brake line on a 1999 Mercury Sable, first, safely lift the vehicle and secure it on jack stands. Locate the damaged brake line, then use a line wrench to disconnect it from the brake components and remove any mounting clips. Cut and replace the line with a new pre-bent brake line, ensuring proper routing and securing it with clips. Finally, bleed the brake system to remove any air before testing the brakes.
DOT 3 brake fluid
What kind of brake problem(noise,pulling)?
There are a couple of bulbs in the taillight: turn, brake & backup.See "Related Questions" below for a Taurus/Sable lightbulb-round-up...
To check the brake light switch on a Ford Taurus or Mercury Sable, first ensure the vehicle is turned off and the keys are removed. Locate the brake light switch, typically found near the brake pedal. Inspect the switch for any visible damage and use a multimeter to test for continuity by pressing the brake pedal—if there's no continuity when the pedal is pressed, the switch may need replacement. Additionally, check the wiring and connections for any signs of wear or disconnection.
3/16
On a 1999 Mercury Sable : In the fuse panel by the brake pedal : ( # 17 is a 30 amp fuse for the front wiper / washer )
If you mean the exclamation point and the " P " above the word " BRAKE " in the lower right side of the gauge cluster in a 1998 Mercury Sable that means either the parking brake / emergency brake is on , or the brake fluid level in the brake master cylinder in your engine compartment is LOW