Lexus ES350 2023 Warning Lights and Buzzer User Manual
Introduction
The Lexus ES350 is a luxury sedan made by Lexus, Toyota’s luxury car subsidiary. The most current model that was still in stock as of my knowledge cutoff in September 2021 was the 2021 model. I don’t have detailed knowledge of the 2023 Lexus ES350’s features, such as its buzzer and warning lights. With every new model year, automakers frequently add new features and updates, changing things like warning lights and auditory alarms. I suggest visiting the official Lexus website, getting in touch with a Lexus dealership, or consulting trustworthy automotive sources for the most recent information on the precise warning lights and buzzer in the 2023 Lexus ES350 model in order to obtain accurate and up-to-date information about the 2023 Lexus ES350.
Your dashboard’s warning lights come on, each with a distinctive symbol and color indicating the type and seriousness of the problem. These lights, which range from the tyre pressure monitoring system to the check engine light, serve as your car’s silent communicators and offer helpful information about the condition and functionality of your Lexus ES350.The buzzer adds an audible component to the warning lights to make sure you don’t miss any important alerts. The buzzer makes a loud noise when a dangerous situation such as an open door, low fuel, or an unbuckled seatbelt occurs, drawing your attention and urging you to act right away. They are designed with clarity and precision, and their integration goes beyond simple functionality.
The warning lights’ standardized and instantly recognizable symbols and colors enable drivers to determine the nature of the current problem. Similar to how the buzzer’s audible signals are carefully designed to be noticeable without being overbearing .In the end, warning lights and buzzers serve as preventative safety measures by guiding you to address potential issues before they worsen and ensuring your safety and the safety of your vehicle. You can prevent potential breakdowns, lower the risk of accidents, and keep your Lexus ES350 operating at peak efficiency by promptly responding to these alerts.
Warning Lights and Buzzer
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.)
(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.)
(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:
When a buzzer does not sound:
|
This light illuminates on the multi-information display.
Electric power steering system warning light (warning buzzer)
| Warning Light | Details/Actions |
(red)
(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:
When a buzzer does not sound:
|
RCD OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
(flashes or illuminates) (if equipped) |
|
PKSB OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped) |
When a buzzer sounds:
When a buzzer does not sound:
|
PCS warning light (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped) |
When a buzzer sounds:
When a buzzer does not sound:
|
PKSB OFF indicator (warning buzzer)
| Warning Light | Details/Actions |
|
(flashes) (if equipped)
|
When a buzzer sounds:
When a buzzer does not sound:
|
PCS warning light (warning buzzer)
| Warning Light | Details/Actions |
(flashes or illuminates) |
When a buzzer sounds simultaneously:
When a buzzer does not sound:
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:
|
Parking brake indicator
| Warning Light | Details/Actions |
(flashes) |
|
|
(U.S.A.) |
|
| (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
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:
- 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.
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 warning 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
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 combined 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 should I do if the check engine light comes on?
If your vehicle’s check engine light comes on, there may be an issue with the engine. To identify and fix the issue, it is advised that you have a qualified mechanic examine your car. - Why is my tire pressure warning light on?
When one or more of your vehicle’s tires have low pressure, the tire pressure warning light will turn on. All tires, including the spare, should have their tire pressure checked and inflated to the recommended levels. If the light stays on, there might be a tire pressure monitoring system issue that needs to be fixed. - What does the ABS warning light mean?
An issue with the ABS (Anti-lock Braking System) system is indicated by the warning light for the ABS. To make sure your brakes are working properly, it is advised to have the system checked out and fixed by a Lexus service center. - Why is the battery warning light on?
A problem with the charging system is typically indicated by the battery warning light. A defective alternator, a loose or compromised battery connection, or a weak battery could all be to blame. To identify and fix the problem, have a professional inspect your car. - What should I do if the oil pressure warning light comes on?
Low engine oil pressure is indicated by the oil pressure warning light turning on in your car. Check the oil level as soon as you stop, then pull over. Add oil if it’s too low. To prevent possible engine damage, seek professional assistance if the light stays on or the oil level is normal. - Why is the VSC (Vehicle Stability Control) light on?
When there is a problem with the vehicle stability control system, the VSC light turns on. As the system is essential for preserving stability and traction, it is advised to have it examined and repaired by a qualified technician. - What does the SRS (Supplemental Restraint System) warning light indicate?
A problem with your car’s airbag system or seat belt pretensioners is indicated by the SRS warning light. This problem needs to be resolved right away because it might interfere with the way safety systems react in an accident. - Why is the low fuel warning light flashing?
When your car’s fuel level is dangerously low, the low fuel warning light flashes. It serves as a prompt to refuel right away to prevent running out of fuel. - What should I do if the high engine coolant temperature warning light comes on?
Your engine is overheating if the high engine coolant temperature warning light comes on. Pull over in a secure area, turn off the engine, and wait for it to cool. Check for leaks in the radiator and the coolant level. Consult a qualified technician if the issue continues. - What does the lane departure warning light mean?
A lane departure warning system issue is indicated by the lane departure warning light. To make sure the system is operating correctly, have a Lexus service center inspect it. - Why is the blind spot monitor warning light on?
When there is an issue with the blind spot monitoring system, the warning light for the system illuminates. To maintain its functionality, it is advised to have it examined and fixed by a trained technician. - What should I do if the pre-collision system warning light comes on?
If the pre-collision system warning light comes on, the system may be having issues. As it is intended to help prevent or mitigate collisions, have it checked by a professional to make sure it is operating properly. - Why is the traction control system (TCS) light on?
When there is a problem with the traction control system, the TCS light turns on. In order to ensure the best possible traction and stability while driving, it is advised to have the system inspected and repaired. - What does the lane keep assist warning light indicate?
When there is a problem with the lane keep assist system, the lane keep assist warning light turns on. To maintain its functionality, it is advised to have it examined and fixed by a trained technician. - Why is the seat belt warning buzzer beeping even though I’m wearing my seat belt?
If you are wearing a seat belt and the seat belt warning buzzer is still beeping, there may be an issue with the seat belt sensor or wiring. To ensure proper seat belt functionality, have the problem identified and fixed at a Lexus service center.
Useful Links
View Full User Guide: Lexus ES350 2023 User Manual | Auto User Guide
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