The 2022 Chevrolet Bolt EUV's One Pedal Driving feature provides strong regenerative braking when lifting off the accelerator. When this system malfunctions, drivers notice reduced deceleration and must rely more heavily on friction brakes.
How One Pedal Driving Works
One Pedal Driving uses aggressive regenerative braking to slow the vehicle when you release the accelerator. The electric motor acts as a generator, converting kinetic energy back to electricity while providing deceleration up to 0.2g.
Causes of One Pedal Driving Malfunctions
Battery State of Charge Limitations
When the high-voltage battery is nearly full (above 90%), regenerative braking is limited because there's no room to store recovered energy. This is normal behavior, not a malfunction.
Battery Temperature Extremes
Very cold or hot battery temperatures reduce regenerative braking capability. The system protects battery cells by limiting charging rate, which directly affects regen strength.
Motor Position Sensor Issues
The motor resolver provides rotor position information essential for regenerative braking control. Sensor faults affect the motor controller's ability to manage regeneration properly.
Brake System Integration Faults
One Pedal Driving integrates with the traditional brake system. Faults in the brake control module or wheel speed sensors can trigger reduced regenerative braking as a safety measure.
When to Seek Service
If One Pedal Driving remains weak regardless of battery state and temperature, or if warning lights accompany the reduced function, professional diagnosis is recommended.