Yes, in many vehicles, the steering wheel heating function typically automatically deactivates when the Adaptive Cruise Control (ACC) system is disengaged. This behavior is part of the integrated control between the vehicle's climate control system and ACC. Here's how this works:

1. Integration Between ACC and Steering Wheel Heating:

• In some advanced vehicles, steering wheel heating is directly linked to the ACC system. When ACC is active, the heating system may engage to provide added comfort, especially during long drives or in cold weather.
• Once the ACC is turned off (either manually by the driver or due to a change in driving conditions), the vehicle may automatically deactivate the steering wheel heating as well, since the system is no longer needed to support the functions of ACC.

2. Purpose of Deactivation:

• The heating function is typically intended to improve driver comfort during long highway drives, where ACC is actively controlling the vehicle's speed and distance from other cars. When the ACC system is no longer needed (e.g., when the driver manually disengages it), the vehicle's climate control system may interpret that as a sign that the heating is no longer necessary, and thus turn off the heating.
• This automatic deactivation helps to conserve energy and prevent excessive use of power, which is especially important in electric or hybrid vehicles where energy efficiency is crucial.

3. Driver Control and Customization:

• While the heating function can automatically deactivate with the disengagement of ACC, some vehicles may allow the driver to manually override this. For example, the driver might be able to keep the steering wheel heating active even after ACC is disengaged by using specific controls on the steering wheel or through the vehicle's infotainment system.
• In some models, the driver can choose to disable automatic deactivation of the heating system, ensuring it remains active even if ACC is no longer engaged.

4. System Variations:

• The exact behavior of the steering wheel heating in relation to ACC disengagement can vary by vehicle make and model. Some vehicles may require manual control to deactivate the heating, while others integrate this feature as part of the ACC settings to ensure a seamless and efficient driving experience.

Conclusion:

In most vehicles, the steering wheel heating function will automatically deactivate when the ACC system is disengaged, as part of an integrated system designed for comfort and energy efficiency. However, there may be options for the driver to override this behavior and keep the heating active if desired.