Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Brake Modes: Notes
Because much of the brake torque required to stop the vehicle can be achieved through regenerative braking, it is not always necessary for the conventional friction brakes to be applied. The PCM and the High-Voltage Traction Battery (HVTB) continually communicate over the HS-CAN1 to determine if the electric motor can be used to slow the vehicle. This is based on several factors including the current voltage status of the High-Voltage Traction Battery (HVTB), vehicle speed and vehicle charging system status. The brake pedal uses a pedal feel simulator acting against a curved bracket to give the driver a simulated pedal resistance as the brake pedal is applied. When the driver presses the brake pedal, the PCM and the High-Voltage Traction Battery (HVTB) determine which of the 2 brake modes are needed to bring the vehicle to a safe stop.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.