Lexus ES manuals

Lexus ES: Hybrid system precautions

Take care when handling the hybrid system, as it is a high voltage system (about 650 V at maximum) as well as contains parts that become extremely hot when the hybrid system is operating. Obey the warning labels attached to the vehicle.

System components

Lexus ES. Hybrid system

The illustration is an example for explanation and may differ from the actual item.

  1. Warning label
  2. Service plug
  3. Hybrid battery (traction battery)
  4. High voltage cables (orange)
  5. Electric motor (traction motor)
  6. Power control unit
  7. Air conditioning compressor

■Running out of fuel When the vehicle has run out of fuel and the hybrid system cannot be started, refuel the vehicle with at least enough gasoline to make the low fuel level warning light go off. If there is only a small amount of fuel, the hybrid system may not be able to start. (The standard amount of fuel is about 2.4gal. [9.0 L, 2.0], when the vehicle is on a level surface. This value may vary when the vehicle is on a slope. Add extra fuel when the vehicle is inclined.)

■Electromagnetic waves

■Hybrid battery (traction battery) The hybrid battery (traction battery) has a limited service life. The lifespan of the hybrid battery (traction battery) can change in accordance with driving style and driving conditions.


■High voltage precautions This vehicle has high voltage DC and AC systems as well as a 12-volt system. DC and AC high voltage is very dangerous and can cause severe burns and electric shock that may result in death or serious injury.

Lexus ES. Hybrid system

■Road accident cautions Observe the following precautions to reduce the risk of death or serious injury:

■Hybrid battery (traction battery)

When reselling or handing over your vehicle, the possibility of an accident is extremely high because the person receiving the vehicle may not be aware of these dangers.


■Hybrid battery (traction battery) Do not carry large amounts of water such as water cooler bottles in the vehicle.

If water spills onto the hybrid battery (traction battery), the battery may be damaged. Have the vehicle inspected by your Lexus dealer.

Hybrid battery (traction battery) air intake vent

There is an air intake vent under the rear seat (right side) for the purpose of cooling the hybrid battery (traction battery). If the vent becomes blocked, the hybrid battery (traction battery) may overheat, leading to a reduction in the hybrid battery (traction battery) output.

Lexus ES. Hybrid system


■Hybrid battery (traction battery) air intake vent

Emergency shut off system

When a certain level of impact is detected by the impact sensor, the emergency shut off system blocks the high voltage current and stops the fuel pump to minimize the risk of electrocution and fuel leakage. If the emergency shut off system activates, your vehicle will not restart. To restart the hybrid system, contact your Lexus dealer.

Hybrid warning message

A message is automatically displayed when a malfunction occurs in the hybrid system or an improper operation is attempted.

If a warning message is shown on the multi-information display, read the message and follow the instructions.

Lexus ES. Hybrid system

■If a warning light comes on, a warning message is displayed, or the 12-volt battery is disconnected The hybrid system may not start. In this case, try to start the system again. If the "READY" indicator does not come on, contact your Lexus dealer.


 Theft deterrent system

Immobilizer system The vehicle's keys have built-in transponder chips that prevent the hybrid system from starting if a key has not been previously registered in the vehicle's on-board computer.

 Vehicle status information and indicators

 Warning lights and indicators

The warning lights and indicators on the instrument cluster, center panel and outside rear view mirrors inform the driver of the status of the vehicle's various systems. Warning lights and indi


 Drive Motor "A" Circuit Current Out of Range (P0BFF1D)

DTC SUMMARY MALFUNCTION DESCRIPTION This DTC is stored when the motor generator control system is malfunctioning and current does not flow as commanded. The cause of this malfunction may be one of the following: Area Main Malfunction Description Inside of inverter Inverter with converter

 Software Incompatibility with Body Control Module Not Programmed (U032251)

DESCRIPTION If the forward recognition camera cannot verify the vehicle information sent from the main body ECU (multiplex network body ECU), the forward recognition camera stores DTC U032251. DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from U032251

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