For today's typical high-torque engines, traction control (ASR) can increase both comfort and safety, particularly when you're driving on slippery roads or loose surfaces. Traction control gives you smooth starting and acceleration through the full speed range without wheel-spin or fishtailing. ASR only operates in conjunction with the electronic accelerator and uses components of the anti-lock braking system. If one wheel suddenly begins to slip, ASR intervenes in the engine management system and reduces power until the wheel stops spinning. ASR also reduces tyre wear. Activation of the system is indicated by a flashing light in the instrument cluster. The system also incorporates the electronic differential lock and makes up part of the electronic stabilisation program (ESC). ASR can be deactivated by pressing the ESC switch.