Lexus GS450h 2010 Using The Audio System / LEXUS 2010 GS450H OWNERS MANUAL (OM30C81U)

When trouble arises5
521
GS_HV_U (OM30C81U)
January 28, 2010 11:33 am
5-1. Essential information
Emergency flashers............... 522
If your vehicle needs 
to be towed ............................ 523
If you think something is 
wrong ....................................... 531
Event data recorder .............. 5325-2. Steps to take in an 
emergency
If a warning light turns 
on or a warning buzzer 
sounds..................................... 534
If a warning message is 
displayed................................ 543
If you have a flat tire (Vehicles 
with standard tires) ............. 560
If you have a flat tire (Vehicles 
with run-flat tires)................ 570
If the hybrid system will 
not start .................................. 572
If the shift lever cannot be 
shifted from “P”.................... 573
If you lose your keys ............... 574
If the electronic key does not 
operate properly .................. 575
If the 12 volt battery is 
discharged ............................ 578
If your vehicle overheats ...... 581
If the vehicle becomes 
stuck........................................ 584
If your vehicle has to be stopped 
in an emergency .................. 586

522
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
5-1. Essential information
Emergency flashers
NOTICE
■To prevent 12 volt battery discharge
Do not leave the emergency flashers on longer than necessary when the hybrid sys-
tem is off.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5
When trouble arises
523
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
If your vehicle needs to be towed
Before towing
The following may indicate a problem with your transmission. Contact
your Lexus dealer before towing.
●The hybrid system is operating, but the vehicle will not move.
●The vehicle makes an abnormal sound.
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing, and abide by all state/provincial
and local laws.
If towing from the rear, the wheels and axle on the ground must be in good
condition.
If they are damaged, use a towing dolly or flat bed truck.

524
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be tem-
porarily towed using a cable or chain secured to the emergency towing
eyelet. This should only be attempted on hard, surfaced roads for short
distances at under 18 mph (30 km/h).
A driver must be in the vehicle to steer and operate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and brakes must be in good condi-
tion.
Towing eyelet
■Emergency towing procedure
Release the parking brake.
Put the shift lever in “N”.
The “POWER” switch must be in the ACCESSORY mode (hybrid system
off) or the ON mode (hybrid system on).
STEP1
STEP2
STEP3

5
When trouble arises
525
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
CAUTION
■While towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelet and the cable or chain. Always use caution for the
surroundings and other vehicles while towing.
●If the hybrid system is off, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the front with the rear wheels on the ground.
This may cause serious damage to the transmission.

526
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Installing towing eyelet
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body, as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by hand.
Tighten down the towing eyelet
securely using a wheel nut wrench.
STEP1
STEP2
STEP3

5
When trouble arises
527
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Location of the emergency towing eyelet
P. 5 6 0
CAUTION
■Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing. This may lead
to accidents that cause serious injury or even death.

528
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Towing with a sling-type truck
NOTICE
■To prevent body damage
Do not tow with a sling-type truck, either from the front or rear.

5
When trouble arises
529
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Towing with a wheel lift-type truck
From front
Use a towing dolly under the rear
wheels.
From rear
Turn the “POWER” switch to the
ACCESSORY mode so that the
steering wheel is unlocked.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the front with the rear wheels on the ground.
■To prevent damaging the vehicle
●Do not tow the vehicle with the “POWER” switch is OFF. 
The steering lock mechanism is not strong enough to hold the front wheel
straight.
●When raising the vehicle, ensure adequate ground clearance for towing at the
opposite end of the raised vehicle. Without adequate clearance, the vehicle
could be damaged while being towed.

530
5-1. Essential information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Using a flat bed truck
If your Lexus is transported by a
flat bed truck, it should be tied
down at the locations shown in the
illustration.
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45.
Do not overly tighten the tie-
downs or the vehicle may be dam-
aged.