check engine Lexus ES300h 2015 Playing an audio CD and MP3/WMA/AAC discs / (OM33B99U) Workshop Manual

760What to do if... (Troubleshooting)
ES350_300h_OM_OM33B99U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, new genuine mechanical keys
can be made by your Lexus dealer. ( P. 125)
●If you lose your electronic keys, the risk of vehicle theft
increases significantly. Contact your Lexus dealer immediately.
( P. 1 2 6 )
●Is the electronic key battery weak or depleted? ( P. 5 8 4 )
●Is the “START STOP ENGINE” <“POWER”> switch in
IGNITION ON mode?
When locking the doors, turn the “START STOP ENGINE”
<“POWER”> switch off. ( P. 206, 213)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the elec-
tronic key on your person.
●The function may not operate pr operly due to the condition of
the radio wave. ( P. 1 3 4 )
If you have a problem, check the following before contacting your
Lexus dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked

764What to do if... (Troubleshooting)
ES350_300h_OM_OM33B99U_(U)●
The seat belt remind
er light is flashing
Are the driver and the front passenger wearing the seat belts?
( P. 6 2 9 )
●The parking brake indicator is on
Is the parking brake released? ( P. 231)
Depending on the situation, ot her types of warning buzzer may
also sound. ( P. 626, 636)
●Did anyone inside the vehicle op en a door during setting the
alarm?
The sensor detects it and the alarm sounds. ( P. 8 8 )
To stop the alarm, turn the “START STOP ENGINE” <“POWER”>
switch to IGNITION ON mo de or start the engine system>.
●Is the electronic key left insid e the vehicle or the moon roof
opened?
Check the message on the multi-information display.
( P. 6 3 6 )
A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle

770Alphabetical index
ES350_300h_OM_OM33B99U_(U)
Emergency, in case ofIf a warning buzzer sounds..................................................626
If a warning light turns on...............626
If a warning message is displayed ....................................... 636
If the 12-volt battery is discharged ........................... 680, 684
If the electronic key does not operate properly ........ 677
If the engine will not start................ 672
If the hybrid system will not start ................................................ 674
If the shift lever cannot be shifted from P ............676
If you have a flat tire ......................... 659
If you think something is wrong...............................................624
If your vehicle becomes stuck ......................................................697
If your vehicle has to be stopped in an emergency ........... 615
If your vehicle needs to be towed .........................................617
If your vehicle overheats .... 688, 691
Emergency flashers ...............................614
Energy monitor ........................................ 114 Engine
Accessory mode ............................... 206
Compartment .....................................545
Engine switch ............................205, 212
Hood..........................................................541
How to start the engine..................205
How to start the hybrid system .................................................... 212
Identification number....................... 702
If the engine will not start ............... 672
Ignition switch (“POWER” switch).................................................... 212
Ignition switch (“START STOP ENGINE” switch) .........................205
Overheating..............................688, 691
“POWER” switch. ............................... 212
“START STOP ENGINE” switch ...................................................205
Engine compartment cover..............547
Engine coolant Capacity................................................. 707
Checking ...............................................553
Preparing and checking before winter ...................................... 341
Engine coolant temperature gauge ......................................................... 97
Engine immobilizer system ................. 84
Engine oil Capacity................................................. 705
Checking ...............................................548
Oil level warning message ........... 644
Oil pressure warning message........................... 637
Preparing and checking before winter ...................................... 341