check engine LEXUS RX200T 2017 Service Manual

6077-3. Do-it-yourself maintenance
7
Maintenance and care
RX350/RX200t_EE_OM48F32E
Check the radiator, condenser and intercooler radiator and clear away any for-
eign objects.
If any of the above parts are extremely dirty or you are not sure of their condition,
have your vehicle inspected by any au thorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
Check the battery as follows.
■Caution symbols
The meanings of each caution symbol on the top of the battery are as follows:
■Battery exterior
Make sure that the battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.
Terminals
Hold-down clamp
Radiator, condenser and intercooler radiator
WARNING
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries, such as burns.
Battery
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating
instructions
Keep away from childrenExplosive gas
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6407-3. Do-it-yourself maintenance
RX350/RX200t_EE_OM48F32E
Turn the engine switch off.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid off.
Left side instrument panel (left-hand drive vehicles)
Remove the lid.
Left side instrument panel (right-hand drive vehicles)
Remove the lid.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown. If
this happens, check and repl ace the fuses as necessary.
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6537-3. Do-it-yourself maintenance
7
Maintenance and care
RX350/RX200t_EE_OM48F32E
■LED lights
The headlight low beams, headlight high beams, front turn signal lights (vehicles with tri- ple-beam headlights), front position lights and daytime running lights, front fog lights, cornering lights (if equipped), rear fog lights, rear turn signal light (vehicles with triple-
beam headlights), side turn signal lights, st op/tail lights, rear side marker lights, high mounted stoplight, license plate lights, and outer foot lights consist of a number of LEDs.If any of the LEDs has burned out, take your vehicle to any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional to have the light replaced.
■Condensation build-up on the inside of a lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional for more info rmation in the following situations:
●Large drops of water have built up on the inside of a lens.
●Water has built up inside a headlight.
■When replacing light bulbs
 P. 642
WARNING
■To prevent injury
Before performing any light bulb replacement procedure, be sure to turn the engine switch off. Failure to do so may result in burns from hot components or a part of your body may get caught on an operating co mponent, possibly causing serious injury.
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid- able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb. Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or wate r entering the headlight unit. This may damage the head- lights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble the light bulbs, connectors, electric circuits
or component parts. Doing so may result in death or serious injury due to electric shock.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.

6708-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
■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 passen-ger is not sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warn-ing light may not operate properly.
■Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficien t or the voltage temporarily drops, the electric power steering system warning lig ht may come on and the warning buzzer may sound.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes completely empty. If the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp
will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus dealer or repairer, or another duly qualified and eq uipped professional as soon as possible.
■When the tire pressure warning light comes on
Inspect the tires to check if a tire is punctured.
If a tire is punctured: P. 679, 693
If none of the tires are punctured: Turn the engine switch off then turn it to IGNITION ON mode. Check if the tire pressurewarning light comes on or blinks.
If the tire pressure warning light comes on
After the temperature of the tires has lowere d 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. 616)
If the warning light does not turn off severa l minutes after the initialization has been per- formed, have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional immediately.
If the tire pressure warning light blinks for 1 minute then stays on
There may be a malfunction in the tire pressure warning system. Have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional immediately.
■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 or tire inflation pressure changes caused by temperature. In this case, adjusting the tire inflation pressure will turn off th e warning light (after a few minutes).
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6768-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
Take the appropriate actions as instructed in the message displayed.
If any of the following messages are displayed, also refer to this Owner’s Manual.
■If “Shift to P Before Exiting Vehicle” is shown
Message is displayed when the driver’s door is opened without turning the
engine switch off with the shift lever in any position other than P.
Shift the shift lever to P.
■If “Power Turned Off to Save Battery” is displayed
This message is displayed when the po wer was cut off due to the automatic
power off function.
The next time the engine is started, increase the engine speed slightly and
maintain it at that speed for approximately 5 minutes to recharge the battery.
■If “AWD System Overheated Switch ing to 2WD Mode” or “AWD System
Overheated 2WD Mode Engaged” is displayed (AWD models)
This message may be displayed when dr iving under extremely high load con-
ditions.
Drive the vehicle at low speeds or stop the vehicle in a safe place with the
engine running until the message is cleared.
If the message is not cleared, have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
■If “A New Key has been Registered Cont act Your Dealer for Details” is dis-
played
This message will be displayed each time the driver’s door is opened when the
doors are unlocked from the outside for approximately one week after a new
electronic key has been registered.
If this message is displayed but you have not had a new electronic key regis-
tered, ask any authorized Lexus dealer or repairer, or another duly qualified
and equipped professional. to check if an unknown electronic key (other than
those in your possession) has been registered.
Other messages displayed on the multi-information display

6778-2. Steps to take in an emergency
8
When trouble arises
RX350/RX200t_EE_OM48F32E
■When “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunctioning. Have the vehicle inspected by
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional immediately.
●The LED headlight system
●The automatic headlight leveling system
●AHS (Adaptive High-beam System) (if equipped)
●Automatic High Beam (if equipped)
■If “Forward Camera System Unavailable” or “Forward Camera System
Unavailable Clean Windshield” is displayed (if equipped)
The following systems may be suspende d until the problem shown in the mes-
sage is resolved.
●PCS (Pre-Crash Safety system)
●LKA (Lane-Keeping Assist)
●Dynamic radar cruise control with full-speed range
●AHS (Adaptive High-beam System)
●Automatic High Beam
●RSA (Road Sign Assist)
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is scheduled to be changed. (The indicator will not
work properly unless the message has been reset.)
Check the engine oil, and change if necessary. After changing the engine oil,
the message should be reset. ( P. 604)
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be changed. (After the engine oil is
changed and the message has been reset.)
Check and change the engine oil, and oil filter by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional. After chang-
ing the engine oil, the message should be reset. ( P. 604)

6948-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
●Stop the vehicle in a safe place on a hard, flat surface.
●Set the parking brake.
●Shift the shift lever to P.
●Stop the engine.
●Turn on the emergency flashers. (P. 656)
●Check the degree of the tire damage.
A tire should only be repaired with
the emergency tire puncture repair
kit if the damage is caused by a nail
or screw passing through the tire
tread.
• Do not remove the nail or screw
from the tire. Removing the
object may widen the opening
and disenable emergency repair
with the kit.
• To avoid sealant leakage, move
the vehicle until the area of the
puncture, if known, is positioned
at the top of the tire.
■A flat tire that cannot be repaired with the emergency tire puncture repair kit
In the following cases, the tire cannot be repaired with the emergency tire puncture
repair kit. Contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
●When the tire is damaged due to driving without sufficient air pressure
●When the tire lost air pressure due to a crack or damage in the tire sidewall
●When the tire is visibly separated from the wheel
●When the cut or damage to the tread is 4 mm (0.16 in.) long or more
●When the wheel is damaged
●When 2 or more sharp objects, such as nails or screws, have passed through the tread
on a single tire
●When there is more than one hole or cut in the damaged tire
●When the sealant has expired
Before repairing the vehicle

7008-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
Attach the sticker as shown.
Check the specified tire inflation pressure.
Tire inflation pressure is spec ified on the label as shown. (P. 737)
Start the engine. (P. 246)
To inject the sealant and inflate the
tire, turn the compressor switch on.
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Left-hand drive vehiclesRight-hand drive vehicles
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7098-2. Steps to take in an emergency
8
When trouble arises
RX350/RX200t_EE_OM48F32E
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. (P. 714)
●There may be a malfunction in the steering lock system.
Contact any authorized Lexus dealer or repairer, or another duly qualified and equipped professional if the problem cannot be repaired, or if repair procedures are unknown.
When the engine does not start, the foll owing steps can be used as an interim
measure to start the engine if the engine switch is functioning normally.
Turn the engine switch to IGNITION ON mode and check that the parking
brake is set. ( P. 247, 259)
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
The starter motor does not turn over , the interior lights and headlights
do not turn on, or the horn does not sound.
Emergency start function
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7128-2. Steps to take in an emergency
RX350/RX200t_EE_OM48F32E
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a buzzer sounds and the engine switchwill turn to IGNITION ON mode.
When the smart entry & start system is deactivated in customization setting, theengine switch will turn to ACCESSORY
mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the engine switch.
In the event that the engine still cannot be operated, contact any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
Starting the engine
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