Mercury 2005 Mariner Owner's Manual page 492

Driving
fuse has blown or the vehicle's brakelamps are not operating properly.
Refer to Fuses and relays in the Roadside Emergencies chapter.
If the fuse is not blown, perform the following procedure:
1. Apply the parking brake, turn the ignition to LOCK, then remove the
key.
2. Using a screwdriver or similar
tool, carefully pry out the small,
round, tethered Brake Transmission
Shift Interlock (BTSI) cover cap
located to the right of the gearshift
lever.
3. Insert a screwdriver or similar
tool straight down into the access
hole and press downward while
pulling the gearshift lever out of the
P (Park) position and into the N
(Neutral) position.
4. Remove tool and reinstall BTSI tethered cover cap.
5. Start the vehicle and release the parking brake.
Do not drive your vehicle until you verify that the brakelamps
are working.
Always set the parking brake fully and make sure the gearshift is
latched in P (Park). Turn the ignition to the LOCK position and
remove the key whenever you leave your vehicle.
If the parking brake is fully released, but the brake warning lamp
remains illuminated, the brakes may not be working properly.
See your dealer or a qualified service technician as soon as possible.
184
2005 Mercury Mariner (mrn)
Owners Guide (post-2002-fmt)
USA_English (fus)