tow Lexus GS450h 2007 Hybrid system / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. (OM30727U) Owner's Guide

341
3-7. Other interior features
3
Interior features
Wait a few seconds until the compass direction is displayed.
The calibration is complete.
■Circling calibration
If “CAL” appears on the display,
driv
e the vehicle at 5 mph (8 km/
h) or less in a circ le until a direction
is displayed.
If there is not enough space to
drive in a circle, drive around the
block until the direction is dis -
played.
STEP4
■Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●The vehicle is stopped immediately after turning.
●The vehicle is on an inclined surface.
●The vehicle is in a place where the earth's magnetic field is subject to interfer -
ence by artificial magnetic fields (underground car park/parking lot, under a
st
eel tower, between buildings, roof car pa rk/parking lot, near an intersection,
near a large vehicle, etc.).
●The vehicle has become magnetized. 
(There is a magnet or metal object near the inside rear view mirror.)
●The 12 volt battery has been disconnected.
●A door is open.

355
4
Maintenance and care
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct proce-
dure given in these sections.
ItemsPa r t s a n d t o o l s
12 volt battery condition (P. 3 7 1)
•Grease
• Conventional wrench 
(for terminal clamp bolts)
Brake fluid level ( P. 3 7 0 )
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
• Funnel (used only for adding brake
fluid)
Engine/inverter coolant level 
( P. 3 6 8 )
• “Toyota Super Long Life Coolant”
or similar high quality ethylene gly-
col based non-silicate, non-amine,
non-nitrate and non-borate coolant
with long-life hybrid organic acid
technology.
For the U.S.A.: 
“Toyota Super Long Life Coolant”
is pre-mixed with 50% coolant and
50% deionized water.
For Canada: 
“Toyota Super Long Life Coolant”
is pre-mixed with 55% coolant and
45% deionized water.
• Funnel (used only for adding cool- ant)

356
4-3. Do-it-yourself maintenance
CAUTION
The engine compartment contains many mechanisms and fluids that may move sud-
denly, become hot, or become electrically energized. To avoid death or serious injury.
■When working on the engine compartment:
●Keep hands, clothing, and tools away from the moving fan and engine drive belt.
●Be careful not to touch the engine, inverter, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
●Do not leave anything that may burn easily , such as paper or rags, in the engine
compartment.
●Do not smoke, cause sparks or expose an open flame to fuel or the battery. Fuel
and battery fumes are flammable.
●Be extremely cautious when working on the battery. It contains poisonous and
corrosive sulfuric acid.
ItemsPa r t s a n d t o o l s
Engine oil level ( P. 3 6 3 )
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used only for adding engine oil)
Fuses ( P. 3 9 5 )• Fuse with same amperage rating as
original
Headlight aim ( P. 4 1 1 )• Phillips-head screwdriver
Radiator and condenser (P. 3 6 9 )
Tire inflation pressure ( P. 3 8 5 )• Tire pressure gauge
• Compressed air source
Wa s h e r f l u i d ( P. 3 74 )
• Water washer fluid containing anti-
freeze (for winter use)
•Funnel

When trouble arises5
419
5-1. Essential information ........... 420If your vehicle needs to be 
towed........................................... 420
If you think something is 
wrong .......................................... 427
Event data recorder ................. 428 5-2. Steps to take in an

emergency............................ 430
If a warning light turns on or a 
warning buzzer sounds............ 430
If a warning message is 
displayed.................................... 436
If you have a flat tire 
(Vehicles with run-flat 
tires) ............................................. 455
If you have a flat tire 
(Vehicles with standard 
tires) ............................................. 456
If the hybrid system will not 
start .............................................. 466
If the shift lever cannot be 
shifted from P........................... 467
If you lose your keys ................. 468
When the electronic key  battery is discharged ............ 469
If the 12 volt battery is 
discharged .................................. 471
If your vehicle overheats ........ 475
If the vehicle becomes 
stuck ............................................ 478

420
5-1. Essential information
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 s
ystem is running, but the vehicle will not move.
● The v
ehicle makes an abnormal sound.
Emergency towing
If a tow truck is not available, in an emergency your vehicle may be tem-
porarily towed using a cable or ch ain secur
ed to the emergency towing
eyelet. This should only attempted on hard, surfaced roads for short dis-
tances at low speeds. 
A driver must be in the vehicle to steer and oper
ate the brakes. The vehi-
cle’s wheels, drive train, axles, steering and br
akes must be in good condi -
tion.
If towing is necessary, we recommen d 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 , a
nd abide by all state/provincial
and local laws.
The wheels and axle on the ground must be in good condition.
If they are damaged, use a to wing dolly
or flat bed truck.

5
When trouble arises
421
5-1. Essential information
Towing eyelet
■Emergency towing procedureRelease the parking brake.
Put the shift lever in “N”.
The power switch must be in the “ACC” mode (hybrid system off) or the
“IG-ON” mode (hybrid system on).
CAUTION
■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.
●If the hybrid system is not running, the power assist for the brakes and steering
will not function, making steeri ng 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 dama ge to the transmission.
STEP1
STEP2
STEP3

422
5-1. Essential information
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
secur
ely using a wheel nut wrench.
STEP1
STEP2
STEP3
■Location of the emergency towing eyelet
P.
4 5 6

5
When trouble arises
423
5-1. Essential information
Towing with a sling-type truck
CAUTION
■Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet ma y come loose during towing. This may lead
to accidents that cause serious injury or even death.
NOTICE
■To prevent body damage
Do not tow with a sling type truck, either from the front or rear.

424
5-1. Essential information
Towing with a wheel lift-type truck
From frontUse a towing dolly under the rear
wheels.
When not using a towing dolly, turn
the power switch to “ACC” mode
and shift the shift lever to “N”.
NOTICE
■To prevent causing serious damage to the transmission
Never tow this vehicle from the front with the rear wheels on the ground.

5
When trouble arises
425
5-1. Essential information
From rearSwitch to “ACC” mode so that the
steering wheel is unlock
ed.
NOTICE
■To prevent damaging the vehicle
●Do not tow the vehicle with the power switch “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. Wi thout adequate clearance, the vehicle
could be damaged while being towed.