Page 234 of 392
234 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
BatteryCheck the battery as follows:
■ Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, observe the following before recharging:
● If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.
Page 236 of 392
236 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
Washer fluidFor vehicles sold in U.S.A. If the washer fluid level is at
“LOW”, add washer fluid.
For vehicles sold in Canada If any washer does not work or
the low washer fluid warning light
comes on, the washer tank may
be empty. Add washer fluid.
NOTICE
■When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.
Page 262 of 392
262 4-3. Do-it-yourself maintenance
Scion_xB_OM_OM12F03U_(U)
9 H-LP MAIN 50 AH-LP LH LO, H-LP RH LO, H-LP
LH HI, H-LP RH HI
10 ECU-B2 10 A Air conditioning system
11 ECU-B 10 A Gauges and meters, body ECU,
vehicle stability control system
12 RAD NO.1 15 A Audio system
13 DOME 10 A Interior light, personal light, lug-
gage compartment light, wireless
remote control system
14 AM2 NO.2 7.5 A No circuit
15 ALT-S 7.5 A Charging system
16 TURN-HAZ 10 A Turn signal lights, emergency
flashers
17 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
18 AM2 30 AMultiport fuel injection system/
sequential multiport fuel injection
system, starting system
19 STRG LOCK 20 A No circuit
20 SPARE Spare fuse
21 SPARE Spare fuse
22 SPARE Spare fuse
23 EFI MAIN 20 AMultiport fuel injection system/
sequential multiport fuel injection
system, EFI NO.1, EFI NO.2
24 HORN 10 A Horn
FuseAmpereCircuit
Page 265 of 392

265
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xB_OM_OM12F03U_(U)
9 MIR HTR
10 AMultiport fuel injection system/
sequential multiport fuel injection
system, outside rear view mirror
defoggers
10 IGN 7.5 AMultiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, steer-
ing lock system
11 METER 7.5 A Gauges and meters
12 HTR-IG 10 A Air conditioning system
13 WIPER 25 A Windshield wipers
14 RR WIPER 15 A Rear window wiper
15 WASHER 15 A Washer
16 ECU-IG NO.1 10 A Multiport fuel injection system/
sequential multiport fuel injection
system, electric power steering,
electric cooling fan, anti-lock brake
system, vehicle stability control
system, shift lock control system,
audio system, body ECU
17 ECU-IG NO.2 10 A Back-up light, emergency flasher,
air conditioning system, rear win-
dow defogger, charging system,
multiport fuel injection system/
sequential multiport fuel injection
system, front passenger’s seat belt
reminder light
FuseAmpereCircuit
Page 290 of 392
290 5-2. Steps to take in an emergency
Scion_xB_OM_OM12F03U_(U)
Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Scion dealer.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
High engine coolant temperature warning light Indicates that the engine is almost overheating.
(P. 323)
Page 320 of 392

320 5-2. Steps to take in an emergency
Scion_xB_OM_OM12F03U_(U)
■Starting the engine when the battery is discharged
Vehicles with an automatic transmission, the engine cannot be started by
push-starting.
■ To prevent battery discharge
●Turn off the headlights and the air conditioning system while the engine is
turned off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
Maintain the engine speed of the second vehicle and start
the engine of your vehicle by turning the engine switch to
the “ON” position.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse or der from which they were con-
nected.
Once the engine starts, have the vehicle inspected at your Scion
dealer as soon as possible.STEP 3
STEP 4
Page 338 of 392
338 6-1. Specifications
Scion_xB_OM_OM12F03U_(U)
Electrical system
Automatic transaxle
*: The fluid capacity is a reference quantity. If replacement is necessary, con-tact your Scion dealer.
Battery
Open voltage* at
68 F (20 C): 12.6 12.8 V Fully charged
12.2 12.4 V Half charged
11 . 8
12.0 V Discharged
(
*: Voltage checked 20 minutes after the
engine and all the lights turned off)
Charging rates 5 A max.
Fluid capacity*8.2 qt. (7.8 L, 6.9 Imp. qt.)
Fluid type Toyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of the transmission accompanied by
vibration and, ultimately, damage to the vehicle’s transmission.
Page 385 of 392

385
Alphabetical index
Scion_xB_OM_OM12F03U_(U)
Tires
Chains .................................. 161
Checking .............................. 238
Compact spare tire ............... 303
If you have a flat tire ............. 302
Inflation pressure .................. 246
Inflation pressure sensor ...... 239
Information ........................... 345
Replacing ............................. 302
Rotating tires ........................ 238
Size ...................................... 340
Snow tires............................. 161
Spare tire .............................. 302
Tire pressure warning system................................ 238
Tools......................................... 302
Total load capacity .................. 160
Towing Dinghy towing ............... 167, 168
Emergency towing ................ 283
Trailer towing ........................ 166
TRAC ........................................ 150
Traction control ....................... 150
Trailer towing........................... 166
Transmission shift
switches................................. 123
Turn signal lights Replacing light bulbs ............ 268
Switch ................................... 126
Wattage ................................ 341
Valet key..................................... 24
Vanity mirrors .......................... 193
Vehicle data recordings............ 17
Vehicle identification number................................... 332
Vehicle stability control .......... 150
VSC ........................................... 150
Warning buzzers Brake system........................ 289
Seat belt reminder ................ 293 Warning lights
Anti-lock brake system ..........291
Brake assist system ..............291
Brake system ........................289
Charging system .... ...............290
Electric power steering system
warning light........................292
Electronic engine control system ................................291
High coolant temperature ......290
Low engine oil pressure ........290
Low fuel level ........................293
Low tire pressure...................295
Low washer fluid ...................293
Malfunction indicator lamp ....291
Open door .............................293
Pretensioners ........................291
Seat belt reminder light .........293
SRS airbags ..........................291
Tire pressure warning light ....295
Washer Checking ...............................236
Preparing and checking
before winter .......................161
Switch....................................141
Washing and waxing ...............204
Weight Cargo capacity ......................155
Load limits .............................160
Weight ...................................332
Wheels ......................................250
Window glasses ........................58
Window lock switch ...................58
Windows
Power windows .......................58
Rear window defogger ..........178
Washer ..................................141
Windshield wipers ...................141
Wireless remote control key Locking/Unlocking ...................26
Replacing the battery ............256
Wireless remote control key ....26
V
W