Four Wheel Drive (4Wd) System (If Equipped); 4Wd System Indicator Lights; 4Wd System Messages In Message Center (If Equipped); Driving Off-Road With Truck And Utility Vehicles - Mercury 2005 Mariner Owner's Manual

FOUR WHEEL DRIVE (4WD) SYSTEM (IF EQUIPPED)

For important information regarding safe operation of this type
of vehicle, see Preparing to drive your vehicle in this chapter.
Your vehicle is equipped with an intelligent 4WD System that
continuously monitors vehicle conditions and automatically adjusts the
power distribution between the front and rear wheels. It combines
transparent all-surface operation with highly capable four-wheel drive.
The 4WD system is always active and requires no driver input. It is
capable of handling all road conditions, including street and highway
driving as well as off-road and winter driving.
During very extreme off-road events, the 4WD system has a heat
protection mode to protect itself from damage. If the system detects an
overheat condition, it will enter a locked mode. If the heat in the 4WD
system continues to rise in locked mode, it will disable itself. To exit heat
protection mode, simply stop the vehicle and allow it to cool.

4WD system indicator lights

• Blinks continuously when 4WD
system is disengaged (i.e. two
wheel drive) due to heat
protection mode.
• Blinks several times every minute when 4WD system requires
service. Please bring your vehicle to your local dealer for service.

4WD system messages in Message Center (if equipped)

• SERVICE 4WD: Displayed when 4WD system requires service. Please
bring your vehicle to your local dealer for service.
• 4WD LOCKED TEMPORARILY: Displayed when 4WD system is
locked (i.e. permanent four wheel drive) due to heat protection mode.
• 4WD DISABLED TEMPORARILY: Displayed when 4WD system is
disengaged (i.e. two wheel drive) due to heat protection mode.
• 4WD AUTO RESTORED: Displayed when normal 4WD system
function is restored when heat protection mode is exited.

Driving off-road with truck and utility vehicles

4WD vehicles are specially equipped for driving on sand, snow, mud and
rough terrain and have operating characteristics that are somewhat
different from conventional vehicles, both on and off the road.
2005 Mercury Mariner (mrn)
Owners Guide (post-2002-fmt)
USA_English (fus)
Driving
189