Lexus ES250 2023 Warning Lights and Buzzer Sounds User Manual
Introduction
A sophisticated and technologically cutting-edge luxury car that provides a relaxing and delightful driving experience is the Lexus ES250 2023. The car is equipped with a variety of warning lights and buzzer sounds as part of its extensive safety and diagnostic system to notify the driver of different conditions and problems. Assuring the driver’s safety and the proper operation of the car, these warning lights and buzzer noises play a vital part in keeping them informed about the condition of the vehicle. They are made to deliver succinct and unambiguous notifications so the driver may respond appropriately.
The dashboard of the Lexus ES250 2023 has a number of warning lights, each with a distinctive emblem and color. These lights turn on when the vehicle’s systems identify a particular problem or condition. The check engine light, tyre pressure warning light, battery charge warning light and brake system warning light are just a few examples of popular warning lights. The Lexus ES250 2023 is equipped with both warning lights and a buzzer system that emits unique noises to correspond to particular warning lights or particular scenarios. For instance, the buzzer might go off to let the driver know if a door is open or a seatbelt is not fastened. It’s critical for Lexus ES250 2023 drivers to become familiar with these warning lights.
Warning Lights and Buzzer Sounds
If a warning light turns on or a warning buzzer sounds
Calmly perform the following actions if any of the warning lights comes on or flashes. If a light comes on or flashes, but then goes off, this does not necessarily indicate a malfunction in the system. However, if this continues to occur, have the vehicle inspected by your Lexus dealer.
Actions to the warning lights or warning buzzers
Brake system warning light (warning buzzer)
| Warning Light | Details/Actions |
(U.S.A.) or
(red) (Canada) |
Indicates that:
|
Brake system warning light (warning buzzer)
| Warning Light | Details/Actions |
(yellow) |
Indicates a malfunction in the parking brake system Have the vehicle inspected by your Lexus dealer immediately. |
High coolant temperature warning light* (warning buzzer)
| Warning Light | Details/Actions |
|
Indicates that the engine coolant temperature is too high Immediately stop the vehicle in a safe place. |
This light illuminates on the multi-information display.
Charging system warning light* (warning buzzer)
| Warning Light | Details/Actions |
 |
Indicates a malfunction in the vehicle’s charging system Immediately stop the vehicle in a safe place and contact your Lexus dealer. |
*: This light illuminates on the multi-information display.
| Warning Light | Details/Actions |
 |
Indicates that the engine oil pressure is too low Immediately stop the vehicle in a safe place and contact your Lexus dealer. |
*: This light illuminates on the multi-information display.
Malfunction indicator lamp (warning buzzer)
| Warning Light | Details/Actions |
(U.S.A.) or
(Canada) |
Indicates a malfunction in:
Immediately stop the vehicle in a safe place and contact your Lexus dealer. |
SRS warning light (warning buzzer)
| Warning Light | Details/Actions |
 |
Indicates a malfunction in:
Have the vehicle inspected by your Lexus dealer immediately. |
ABS warning light (warning buzzer)
| Warning Light | Details/Actions |
(U.S.A.) or (Canada) |
Indicates a malfunction in:
Have the vehicle inspected by your Lexus dealer immediately. |
Inappropriate pedal operation warning light* (warning buzzer)
| Warning Light | Details/Actions |
|
When a buzzer sounds:
Follow the instructions displayed on the multi-information display. When a buzzer does not sound:
Release the accelerator pedal and depress the brake pedal. |
*: This light illuminates on the multi-information display.
Electric power steering system warning light (warning buzzer)
| Warning Light | Details/Actions |
(red) or
(yellow) |
Indicates a malfunction in the EPS (Electric Power Steering) system
Have the vehicle inspected by your Lexus dealer immediately. |
Low fuel level warning light
| Warning Light | Details/Actions |
 |
2WD models: Indicates that remaining fuel is approximately 2.4 gal. (9 L, 2.0 Imp.gal.) or less AWD models: Indicates that remaining fuel is approximately 2.1 gal. (8 L, 1.8 Imp gal.) or lessRefuel the vehicle. |
Driver’s and front passenger’s seat belt reminder light (warning buzzer)
| Warning Light | Details/Actions |
 |
Warns the driver and/or front passenger to fasten their seat belts. Fasten the seat belt. If the front passenger’s seat is occupied, the front passenger’s seat belt also needs to be fastened to make the warning light (warning buzzer) turn off. |
Driver’s seat belt warning buzzer
The driver’s seat belt warning buzzer sounds to alert the driver that his or her seat belt is not fastened. Once the engine switch is turned to IGNITION ON mode, the buzzer sounds. If the seat belt is still unfastened, the buzzer sounds intermittently for a certain period of time after the vehicle reaches a certain speed.
Front passenger’s seat belt warning buzzer
The front passenger’s seat belt warning buzzer sounds to alert the front passenger that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermittently for a certain period of time after the vehicle reaches a certain speed.
Rear passengers’ seat belt reminder lights*1 (warning buzzer)
| Warning Light | Details/Actions |
 |
Warns the rear passengers to fasten their seat belts Fasten the seat belt. |
- This light illuminates on the multi-information display. Regardless of whether or not a rear passenger is present, if the engine switch is turned to IGNITION ON mode with the rear seat belts unfastened, this light will also illuminate for a certain period of time.
- Rear passengers’ seat belt warning buzzer: The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermittently for a certain period of time, after the seat belt is fastened and unfastened and the vehicle reaches a certain speed.
Tire pressure warning light
| Warning Light | Details/Actions |
(flashes) |
When a buzzer sounds:
Have the vehicle inspected by your Lexus dealer immediately. When a buzzer does not sound:
Follow the instructions displayed on the multi-information display. |
RCD OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
(flashes or illuminates) (if equipped) |
Indicates a RCD (Rear Camera Detection) function is malfunctioning or disabled. Follow the instructions displayed on the multi-information display. (®P.228, 357) |
PKSB OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped) |
When a buzzer sounds:
Have the vehicle inspected by your Lexus dealer immediately. When a buzzer does not sound:
Follow the instructions displayed on the multi-information display. (®P.235, 357) |
PCS warning light (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped) |
When a buzzer sounds:
Have the vehicle inspected by your Lexus dealer immediately. When a buzzer does not sound:
Follow the instructions displayed on the multi-information display. (®P.235, 357) |
PKSB OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped)
|
When a buzzer sounds:
Have the vehicle inspected by your Lexus dealer immediately. When a buzzer does not sound:
Follow the instructions displayed on the multi-information display. (®P.235, 357) |
PCS warning light (warning buzzer)
| Warning Light | Details/Actions |
(flashes or illumi- nates) |
When a buzzer sounds simultaneously:
Have the vehicle inspected by your Lexus dealer immediately. When a buzzer does not sound:
Follow the instructions displayed on the multi-information display. (®P.172, 357) If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control) system is disabled, the PCS warning light will illuminate. |
Slip Indicator
| Warning Light | Details/Actions |
|
Indicates a malfunction in:
Have the vehicle inspected by your Lexus dealer immediately. |
Parking brake indicator
| Warning Light | Details/Actions |
(flashes) |
|
(U.S.A.) |
Indicates a malfunction in the parking brake system. Have the vehicle inspected by your Lexus dealer immediately. |
| (flashes) | |
| (Canada) |
Brake hold operated indicator (warning buzzer)
| Warning Light | Details/Actions |
 (flashes) |
Indicates a malfunction in the brake hold system Have the vehicle inspected by your Lexus dealer immediately. |
Master warning light (warning buzzer)
| Warning Light | Details/Actions |
|
A buzzer sounds and the warning light comes on and flashes to indicate that the master warning system has detected a malfunction. |
Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound. Front passenger detection sensor, seat belt reminder and warning buzzer
- If luggage is placed on the front passenger seat, the front passenger detection sensor may cause the warning light to flash and the warning buzzer to sound even if a passenger is not sitting in the seat.
- If a cushion is placed on the seat, the sensor may not detect a passenger, and the warning light may not operate properly.
SRS warning light
This warning light system monitors the air-bag sensor assembly, front impact sensors, side impact sensors (front door), side impact sensors (front), side impact sensors (rear), driver’s seat position sensor, driver’s seat belt buckle switch, front passenger occupant classification system (ECU and sensors), “PASSENGER AIR BAG” indicator lights, front passenger’s seat belt buckle switch, seat belt pretensioners, airbags, interconnecting wiring and power sources P.28)
Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily drops, the electric power steering system warning light may come on and the warning buzzer may sound.
When the tire pressure warning light comes on
- Inspect the tires to check if a tire is punctured.
- If a tire is punctured: P.361
- If none of the tires are punctured:
- Turn the engine switch off then turn it to IGNITION ON mode. Check if the tire pressure warning light comes on or blinks.
- If the tire pressure warning light blinks for approximately 1 minute then stays on There may be a malfunction in the tire pressure warning system. Have the vehicle inspected by your Lexus dealer immediately.
- If the tire pressure warning light comes on
- After the temperature of the tires has lowered sufficiently, check the inflation pressure of each tire and adjust them to the specified level.
- If the warning light does not turn off even after several minutes have elapsed, check that the inflation pressure of each tire is at the specified level and perform initialization. (P.321)
The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air leaks and tire inflation pressure changes caused by temperature. In this case, adjust-ing the tire inflation pressure will turn off the warning light (after a few minutes).
When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-ter. If a tire goes flat, the tire pressure warn-ing light will not turn off even though the flat tire has been replaced with the spare tire. Replace the spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure warning light will go off after a few minutes.
Conditions that the tire pressure warning system may not function properly
P.320
WARNING
If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehicle will become extremely unstable during braking, and the ABS system may fail, which could cause an accident resulting in death or serious injury.
When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is restricted. When the light comes on red, the assist to the power steering is lost and handling operations of the steering wheel become extremely heavy. When steering wheel operations are heavier than usual, grip the steering wheel firmly and operate it using more force than usual.
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of vehicle control and result in death or serious injury.
- Stop your vehicle in a safe place as soon as possible. Check and adjust the tire inflation pressure immediately.
- If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
- Avoid abrupt maneuvering and braking.
If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
Maintenance of the tires
Each tire, including the spare (if pro-vided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label (tire and load information label). (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label [tire and load information label], you should determine the proper tire inflation pressure for those tires.)
WARNING
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS-tire pressure warning system) that illuminates a low tire pressure telltale (tire pressure warning light) when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale (tire pressure warning light) illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that the TPMS (tire pressure warning system) is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) malfunction indicator to indicate when the system is not operating properly. The TPMS (tire pressure warning system) malfunction indicator is cobined with the low tire pressure telltale (tire pressure warning light). When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the mal-function indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS (tire pressure warning system) from functioning properly. Always check the TPMS (tire pressure warning system) malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS (tire pressure warning system) to continue to function properly.
NOTICE
To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.
FAQs
- What does it mean when the “Check Engine” light comes on in my Lexus ES250 2023?
When the “Check Engine” light comes on, the engine or one of its linked components likely has a problem. To identify the precise problem, it is advised to have the car diagnosed by a skilled mechanic. - Why is the “Oil Pressure” warning light flashing in my Lexus ES250 2023?
A flashing “Oil Pressure” indicator indicates a decline in oil pressure, which, if left unattended, can cause catastrophic engine damage. Check the oil level after stopping at a secure spot and switching off the engine. Add oil if it’s too low. Ask for expert help if the issue continues. - What does it mean if the “Battery” warning light turns on in my Lexus ES250 2023?
A problem with the charging system is often indicated by the “Battery” light. It can be a bad alternator, a loose or damaged connection, or a bad battery. To prevent unanticipated malfunctions, the electrical system must be inspected. - What should I do if the “Brake System” warning light illuminates in my Lexus ES250 2023?
The “Brake System” light indicates a problem with the braking system when it illuminates, such as low brake fluid, a broken brake system part, or a brake fluid leak. To ensure safe driving, the brakes must be tested and fixed as away. - Why is the “Tire Pressure” warning light on in my Lexus ES250 2023?
One or more tires may have low pressure, according to the “Tire Pressure” light. Utilizing a gauge, check the tire pressure and inflate it to the acceptable levels. If the light stays on, a tire puncture or a malfunctioning tire pressure sensor might need to be fixed. - What does it mean if the “ABS” warning light is illuminated in my Lexus ES250 2023?
The “ABS” light indicates that the Anti-lock Braking System is malfunctioning. It can be a sign of an ABS sensor issue, an ABS module issue, or brake system troubles. Have an expert go over the car to find the issue and fix it. - Why is the “Airbag” warning light on in my Lexus ES250 2023?
The “Airbag” light indicates an issue with the airbag system when it illuminates. It’s important to not disregard this warning since it could prevent the airbags from deploying in the case of a collision. To identify and fix the problem, consult a licensed service facility. - What does it mean if the “Power Steering” warning light illuminates in my Lexus ES250 2023?
A power steering system issue is indicated by the “Power Steering” light. It can be a faulty power steering pump, low power steering fluid, or a broken steering part. Have the car looked at so you can pinpoint the issue and fix it right away. - Why is the “Lane Departure Alert” warning light flashing in my Lexus ES250 2023?
The “Lane Departure Alert” light is blinking to show that the system may be sensing lane departure. It serves as a prompt to maintain focus and prevent inadvertent lane changes. To reduce erroneous alarms, examine your driving style and make sure the system is being used properly. - What does it mean if the “Pre-Collision System” warning light is on in my Lexus ES250 2023?
The “Pre-Collision System” light denotes an issue with the system in charge of anticipating collisions. Given that it is so important in preventing accidents, it must be examined by a qualified technician to assure correct operation. - Why is the “Blind Spot Monitor” warning light illuminated in my Lexus ES250 2023?
The “Blind Spot Monitor” light’s illumination denotes a problem with the system that tracks blind spots. It is advised to check the sensors to make sure they are clear and spotless. If the light continues, expert help could be required. - What does it mean if the “Cruise Control” warning light comes on in my Lexus ES250 2023?
A problem with the cruise control system is indicated by the “Cruise Control” light. It can be a sensor issue, a switch issue, or a throttle issue with the car. Have a specialist examine the system to discover and fix the issue. - Why is the “Low Fuel” warning light on in my Lexus ES250 2023, even though there is enough fuel?
Having adequate fuel but the “Low Fuel” indicator is still on could be a sign that the fuel level sensor is malfunctioning. It’s possible that the sensor is broken, which would cause a false reading. Have the sensor checked, and if required, have it replaced. - What does it mean if the “Maintenance Required” light illuminates in my Lexus ES250 2023?
The “Maintenance Required” light serves as a notification that routine maintenance is approaching. It acts as a reminder to have routine maintenance performed, such as oil changes, filter replacements, or system inspections, but it does not signal a specific issue. - Why is the vehicle emitting a continuous buzzer sound in my Lexus ES250 2023?
Continuous buzzing could be a sign of a serious problem, such as an open door, a seatbelt that isn’t attached, or an issue with the engine or safety systems. Look for any obvious problems, then continue your troubleshooting by consulting the vehicle’s manual. If the issue continues, get help from a Lexus service center.
Useful Links
View Full User Guide: Lexus ES250 2023 User Manual | Auto User Guide
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