[VonDutch]

When the TCS comes into play, the system can reduce engine power and/or apply the rear brake(s) to limit wheel spin.

When AH is engaged by the computer, any of the brakes can be applied to help maintain directional stability.

Scenario 1 - Both systems are armed every time the vehicle is started and both/either system can be engaged by the computers depending on circumstances. This is done so that the vehicle will assist the driver in maintaining control of the vehicle under most conditions.

Scenario 2 - If I push the Active Handling button on the console, the FIRST thing that happens is that BOTH systems are TURNED OFF. This condition would not permit the vehicle's computers to assist in an emergency control situation.

Scenario 3 - If I HOLD the button for 5 seconds, I enter Competitive Mode where the AH remains engaged but the TCS is disabled.
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Scenario 1 is set each and every time the vehicle is started and is presumably the "safest" driving condition.

Scenario 2 disables ALL computer assist and therefore would be the "unsafest" condition.

Scenario 3 allows "half" as much computer assist and would therefore fall somewhere between safest and unsafest.