Dynamic Stability Traction Control(DSTC)

Dynamic Stability Traction Control(DSTC)  - Stability system - Starting and driving - Volvo XC90 Owners Manual - Volvo XC90

The stability system consists of a number of functions designed help reduce wheel spin, counteract skidding, and to generally help improve directional stability.

NOTE
A pulsating sound will be audible when the system is actively operating and is normal.

Traction control (TC)
This function is designed to help reduce wheel spin by transferring power from a drive wheel that begins to lose traction to the wheel on the opposite side of the vehicle (on the same axle).

TC is most active at low speeds.

This is one of DSTC's permanent functions and cannot be switched off.

Spin control (SC)
The spin control function is designed to help prevent the drive wheels from spinning while the vehicle is accelerating.

Under certain circumstances, such as when driving with snow chains, or driving in deep snow or loose sand, it may be advisable to temporarily switch off this function for maximum tractive force.

Temporarily switching off Spin control

Temporarily switching off Spin control
1. Turn the thumbwheel (1) on the left-side steering wheel lever until the DSTC menu is displayed.
2. Hold down the RESET button (2) to toggle between DSTC SPIN CONTROL ON or OFF.

NOTE
Х The message DSTC SPIN CONTROL OFF indicates that the stability system's spin control function has temporarily been switched off.
Х The stability control indicator light will illuminate and remain on until spin control has been reactivated.
Х The spin control function is automatically enabled each time the engine is started.
Х DSTC ON indicates that all system functions are active.

Active Yaw Control (AYC)
This function helps maintain directional stability, for example when cornering, by braking one or more of the wheels if the vehicle shows a tendency to skid or slide laterally.

This is one of DSTC's permanent functions and cannot be switched off.

WARNING
The car's handling and stability characteristics will be altered if the DSTC system functions have been disabled.

DSTC-related messages in the text window
Х TRACTION CONTROL TEMPORARILY OFF Ц The system has been temporarily switched off due to high brake temperature and will automatically switch on again when the brakes have cooled.
Х "ANTI SKID SERVICE REQUIRED" Ц the system has been automatically disengaged due to a fault. A trained and qualified Volvo service technician should check the system.

    See also:

    Changing wheels with TPMS
    Please note the following when changing or replacing the factory installed TPMS wheels/ tires on the vehicle: Only the factory-mounted wheels are equipped with TPMS sensors in the valves. If t ...

    Using the information button
    1. Press the information button 2. All of the indicator lights will flash sequentially for approximately 7 seconds to indicate that the PCC is receiving information from the vehicle. If any of the ...

    Driver distraction
    A driver has a responsibility to do everything possible to ensure his or her own safety and the safety of passengers in the vehicle and others sharing the roadway. Avoiding distractions is part of ...