Safety starts with Grand Cherokee's Electronic Stability Program (ESP)* with advanced four-wheel antilock brake system (ABS) featuring large four-wheel disc brakes, zinc-dipped, corrosion resistant calipers, brake lines and heavy-duty rotors. The ESP employs sophisticated sensors to actively assist you as you drive and safely manage the vehicle. Challenging conditions ahead? When ESP detects a difference between driver intent and vehicle performance, corrective actions automatically and instantly deploy using all-speed traction control, Brake Assist and Electronic Roll Mitigation technologies where applicable. All help safely maintain vehicle stability wherever you choose to travel.