2006 VOLVO XC90 wheel torque

2006 VOLVO XC90
the difference in speed is immediately detected. This triggers the Anti-\
lock Brake System, which brakes
the spinning wheel until the difference in rotational speed is corrected\
.
TC is most active at low speeds, and a pulsating sound will be audible w\
hen the system is regulating
wheel spin. This is quite normal.
This is one of the DSTC system's permanent functions and is not affected\
when the DSTC button on the
center control panel is pressed.
2. Spin control (SC)
The spin control function is designed to help prevent the drive wheels f\
rom spinning while the vehicle is
accelerating. This is done by temporarily reducing engine torque to the \
drive wheels, which helps
improve tractive force.
Under certain circumstances, such as when driving with snow chains, or d\
riving in deep snow or loose
sand, it may be advisable to temporarily switch off this function for ma\
ximum tractive force. This is
done by pressing the DSTC button on the center control panel for at leas\
t a half a second.
When the SC function has been switched off:
l The text window will briefly display "DSTC SPIN CONTROL OFF"
l The LED in the DSTC button will be off.
3. Active Yaw Control (AYC)
This function helps maintain directional stability, for example when cor\
nering, by braking one or more
of the wheels if the vehicle shows a tendency to skid or slide laterally\
. This is done by activating the
Anti-lock Braking System. A pulsating sound will be audible when the fun\
ction is active, which is quite
normal. If you apply the brakes while this function is active, the brake\
pedal will feel stiffer than usual.
This is also one of the DSTC system's permanent functions and is not aff\
ected when the DSTC button on
the center control panel is pressed.
4. Roll Stability Control (RSC)
RSC utilizes a gyro-sensor to monitor the vehicle's angle of inclination\
, and the rate at which this angle
changes. If necessary, RSC activates the Anti-lock Brake System to brake\
one or more of the wheels to
help maintain stability. A pulsating sound will be audible when the func\
tion is active, which is quite
normal. If you apply the brakes while this function is active, the brake\
pedal will feel stiffer than usual.
This is one of the DSTC system's permanent functions and is not affected\
when the DSTC button on the
center control panel is pressed.
The DSTC button
The DSTC button in the center control panel is used to switch the Spin C\
ontrol (SC) function on or off.
file:///K|/ownersdocs/2006/2006_XC90/06xc90_06b.htm (4 of 18)12/30/200\
6 5:32:46 PM

2006 VOLVO XC90
Changing a wheel:
1. Park the vehicle on a firm, level, non-slippery surface.
2. Engage the parking brake and put the gear selector in the Park positi\
on.
3. Loosen the wheel bolts by exerting downward pressure on the lug wrenc\
h.
4. Remove the wheel cap (where applicable) using the lug wrench in the\
tool bag.
5. With the wheels still on the ground, use the lug wrench to loosen the\
wheel bolts 1/2 - 1 turn. Turn the
bolts counterclockwise to loosen the bolts. CAUTION
- The vehicle must not be driven with wheels of different dimensions or \
with a spare tire other than
the one that came with the vehicle. The use of different size wheels can\
seriously damage your
vehicle's transmission.
- Correct tightening torque on wheel bolts must be observed.
- The wheel bolts should never be greased or lubricated.
- Extended, chromed wheel bolts must not be used with steel rims, as the\
y make it impossible to fit
the hub caps.
pg. 129 Wheels and tires
file:///K|/ownersdocs/2006/2006_XC90/06xc90_08.htm (21 of 22)12/30/200\
6 5:32:49 PM