Audi's Q7 luxury SUV has as one of its options a four-zone fully automatic climate control system designed and engineered by Delphi Corporation and Audi, and manufactured by Delphi. The system uses separate front and rear HVAC modules with independent air controls for each zone. It includes Delphi heat exchangers and evaporators, and a battery disconnect safety device designed to help mitigate short-circuiting in collision events.