2010 Lexus HS250h transmission

459
4-3. Do-it-yourself maintenance
4
Maintenance and care
10AM27. 5 A
Smart access system with push-button
start, hybrid system, multiport fuel
injection system/sequential multiport
fuel injection system, P position con-
trol system, cruise control system,
dynamic radar cruise control system
11ECU-B27. 5 A
Smart access system with push-button
start, multiport fuel injection system/
sequential multiport fuel injection sys-
tem, trunk opener switch
12MAYDAY10 ALexus link system
13ECU-B310 AAir conditioning system, rear window
defogger, mirror heater
14TURN & HAZ10 ATurn signal lights, emergency flashers
15ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
16ABS MAIN NO.120 AElectronically controlled brake system
17P/I 240 A
P position control system, hybrid sys-
tem, transmission, smart access sys-
tem with push-button start, horn,
headlights (low beam), back-up lights
18ABS MTR 130 AElectronically controlled brake system
19ABS MTR 230 AElectronically controlled brake system
20H-LP HI MAIN20 AHeadlights (high beam)
21AMP NO.230 AAudio system, navigation system
22DOOR NO.225 ANo circuit
FuseAmpereCircuit

5
When trouble arises
483
5-1. Essential information
If your vehicle needs to be towed
Before towing
The following may indicate a problem with your hybrid transmission.
Contact your Lexus dealer before towing.
● The hybrid s
ystem is operating but the vehicle will not move.
● The v
ehicle makes an abnormal sound.
Emergency towing
If a tow truck is no t available in an
emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency
towing eyelet(s). 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
vehicle’s wheels, drive train, axles,
steering and brakes must be in
good condition.
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
flatbed truck.

Use a safety chain system for all towing , a
nd abide by all state/provincial
and local laws.

488
5-1. Essential information
NOTICE
■To prevent damage the vehicle when towing using a wheel-lift type truck
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.
■To prevent body damage when towing using a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent causing serious damage to the transmission when emergency towing
Never tow a vehicle from the rear with four wheels on the ground. This may cause
serious damage to the transmission.

5
When trouble arises
493
5-2. Steps to take in an emergency
Have the vehicle inspected by your Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
High engine coolant temperatur e warning light (flashes or
comes on) Indicates that the engine is overheating P. 5 4 1
• Flashes: Engine is overheating. Drive carefully.
• Comes on: Engine is overheated. Stop the vehicle.
Warning lightWarning light/Details
Brake system warning light (yellow indicator) Indicates a malfunction in:
• The regenerative brake system; or
• The electronically controlled brake system
(U.S.A.)

(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The hybrid system;
• The electronic engine control system;
• The electronic throttle control system; or
• The hybrid transmission control system
SRS warning lightIndicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
(U.S.A.)

(Canada)
“ABS” warning lightIndicates a malfunction in:
•The ABS; or
• The brake assist system
Warning lightWarning light/Details

546
5-2. Steps to take in an emergency
NOTICE
■To avoid damage to the hybrid transmission and other components
●Avoid spinning the wheels and depressing the accelerator pedal more than nec-
essary.
●If the vehicle remains stuck even after these procedures are performed, the vehi-
cle may require towing to be freed.

566
6-1. Specifications
Warning: The temperature grades of a tire assume that it is properly inflated
and not overloaded. 
Excessive speed, underinflation, or excess iv
e loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sureTire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sureThe maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of transmission, power
steering, power brakes, power windows, power seats,
radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipp ed, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of: 
(a) Curb weight 
(b) Accessory weight 
(c) Vehicle capacity weight 
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows

600
Alphabetical index
Seat beltsAdjusting the seat belt.........................74
Automatic Locking Retractor ........ 75
Child restraint system 
installation ............................................ 124
Cleaning and maintaining 
the seat belt ....................................... 407
Emergency Locking Retractor ..... 75
How to wear your seat belt..............73
How your child should wear 
the seat belt .......................................... 75
Pre-collision seat belts .................... 232
Pregnant women, 
proper seat belt use......................... 75
Reminder light .....................................495
Seat belt extenders .............................. 76
Seat belt pretensioners .......................74
Seat heaters ............................................ 375
Seat position memory ............................68
Seat ventilator ........................................ 375
Seating capacity .................................... 243
Seats Adjustment .................................... 64, 68
Adjustment 
precautions ..................................67, 70
Child seats/child restraint 
system installation ............................ 124
Cleaning.................................................406
Driver’s seat position 
memory.................................................. 68
Head restraint........................................... 71
Properly sitting in the seat ................ 101
Seat heaters .......................................... 375
Seat position memory ........................ 68
Ventilated seats .................................. 375 Service reminder indicators .............165
Shift lever
Transmission.......................................... 155
Side airbags ............................................. 103
Side marker lights Replacing light bulbs ....................... 469
Switch ........................................................ 183
Wattage ................................................. 556
Side mirrors Adjusting and folding ......................... 83
Mirror position memory ................... 68
Side turn signal lights Replacing light bulbs ........................479
Wattage ................................................. 556
Smart access system with 
push-button start Antenna location ...................................46
Entry functions ........................................ 44
Starting the engine.............................. 147
Starting the hybrid system .............. 147
Smart entry & start system Antenna location ...................................46
Entry function .......................................... 44
Starting the engine.............................. 147
SOS button ............................................. 395
Spare tire Inflation pressure ............................... 555
Storage location .................................. 521
Spark plug ............................................... 552
Specifications ......................................... 548
Speedometer ...........................................162