P3250moderate severityPowertrain
Regenerative Braking System Performance Reduced
on 2010 Toyota Highlander 3.3L V6 Hybrid · AWD
What this code means
The regenerative braking system is not recovering the expected amount of energy during deceleration. The system may be partially or fully disabled.
Symptoms
- Reduced regenerative braking force
- Conventional brakes used more than normal
- Brake pedal feel changed
- Battery not charging during deceleration
- Lower fuel economy (hybrid)
- Reduced range (EV)
Common causes
- HV battery fully charged or too cold
- Motor/generator fault limiting regen
- Battery management limiting charge rate
- Friction brake system compensating
- Traction control intervening during regen
Diagnostic steps
- Check battery SOC and temperature
- Monitor regen torque during deceleration
- Check for other hybrid system DTCs
- Inspect brake system for related codes
- Review BMS charge acceptance limits
Repair notes
Diagnose root cause - battery temperature, SOC limits, or motor fault. Regen may be intentionally limited by BMS to protect battery.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1