ABS NISSAN ALTIMA 2011 Owners Manual

Front-seat Active Head Restraints
The Active Head Restraint moves forward utiliz-
ing the force that the seatback receives from the
occupant in a rear-end collision. The movement
of the head restraint helps support the occu-
pant’s head by reducing its backward movement
and helping absorb some of the forces that may
lead to whiplash-type injuries.
Active Head Restraints are effective for collisions
at low to medium speeds in which it is said that
whiplash injury occurs most.Active Head Restraints operate only in certain
rear-end collisions. After the collision, the head
restraints return to their original position.
Adjust the Active Head Restraints properly as
described in this section.

ANTI-LOCK BRAKING SYSTEM
(ABS)

Normal operation
The ABS operates at speeds above3-6MPH(5
- 10 km/h) . The speed varies according to road
conditions.
When the ABS senses that 1 or more wheels are
close to locking up, the actuator rapidly applies
and releases hydraulic pressure. This action is
similar to pumping the brakes very quickly. You
may feel a pulsation in the brake pedal and hear a
noise from under the hood or feel a vibration from
the actuator when it is operating. This is normal
and indicates that the ABS is operating properly.
However, the pulsation may indicate that road
conditions are hazardous and extra care is re-
quired while driving.The Vehicle Dynamic Control (VDC) system uses
various sensors to monitor driver inputs and ve-
hicle motion. Under certain driving conditions,
the VDC System helps to perform the following
functions:
● Controls brake pressure to reduce wheel
slip on one slipping drive wheel so power is
transferred to a non slipping drive wheel on
the same axle.
● Controls brake pressure and engine output
to reduce drive wheel slip based on vehicle
speed (traction control function) .
● Controls brake pressure at individual wheels
and engine output to help the driver maintain
control of the vehicle in the following condi-
tions:
– understeer (vehicle tends to not follow the steered path despite increased steer-
ing input)
– oversteer (vehicle tends to spin due to certain road or driving conditions)
The VDC system can help the driver to maintain
control of the vehicle, but it cannot prevent loss of
vehicle control in all driving situations. When the VDC system operates, the

Extended storage switch (if so
equipped)
If any electrical equipment does not operate,
remove the extended storage switch and check
for an open fuse.
NOTE:
The extended storage switch is used for
long term vehicle storage. Even if the ex-
tended storage switch is broken it is not
necessary to replace it. Replace only the
open fuse in the switch with a new fuse.How to replace the extended storage switch:
1. To remove the extended storage switch, be sure the ignition switch is in the OFF or
LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs
1found on each
side of the storage switch.
5. Pull the storage switch straight out from the fuse box
2.

CAUTION
●Do not use axle-mounted hitches.
● The hitch should not be attached to or
affect the operation of the impact-
absorbing bumper.
● Do not modify the vehicle exhaust sys-
tem, brake system, etc. to install a
trailer hitch.
● To reduce the possibility of additional
damage if your vehicle is struck from
the rear, where practical, remove the
receiver when not in use.
● After the hitch is removed, seal the bolt
holes to prevent exhaust fumes, water
or dust from entering the passenger
compartment.
● Regularly check that all trailer hitch
mounting bolts are securely mounted.
Tire pressures
● When towing a trailer, inflate the ve-
hicle tires to the recommended cold
tire pressure indicated on the Tire
and Loading Information label.
● Trailer tire condition, size, load rating
and proper inflation pressure should
be in accordance with the trailer and
tire manufacturer’s specifications.
Safety chains
Always use suitable safety chains between your
vehicle and the trailer. The safety chains should
be crossed and should be attached to the hitch,
not to the vehicle bumper or axle. Be sure to leave
enough slack in the chains to permit turning
corners.
Trailer lights