1999 Lexus ES300 ignition

INTRODUCTION
365
NOTICE

Remember that battery and ignition cablescarry high currents or voltages. Be careful ofaccidentally causing a short circuit.

Before closing the engine hood, check to seethat you have not forgotten any tools, rags, etc.

Do not drive with the air cleaner removed, or
excessive engine wear could result. Alsobackfiring could cause a fire in the enginecompartment.

Do not overfill automatic transmission fluid, orthe transmission could be damaged.

Be careful not to scratch the glass surface withthe wiper frame.
PARTS AND TOOLS
Here is a list of parts and tools you will need to perform
do±it±yourself maintenance. Remember all Lexus parts
are designed in metric sizes, so your tools must be
metric.
Checking the engine oil level
Parts (if level is low):

Use API grade SJ, ºEnergy±Conservingº multigrade
engine oil or ILSAC multigrade engine oil. For
recommended oil viscosity, see page 382.
Tools:

Rag or paper towel

Funnel (only for adding oil)
Checking the engine coolant level
Parts (if level is low):

ªToyota Long Life Coolantº or equivalent
See ºChecking the engine coolant levelº on page 383
for instructions.

Demineralized or distilled water
Tools:

Funnel (only for adding coolant)

ENGINE
372± IGNITION SYSTEM
Spark plug ± Make DENSO NGK
± Gap
SK20R11
IFR6A11
1.1 mm (0.043 in.)
± ELECTRICAL SYSTEM
Battery ± Maintenance type battery Specific gravity reading at 20 C (68F):
Charging rates Quick charge Slow charge
± Non±maintenance battery Open voltage at 20C (68F):
Charging rates
1.260 Fully charged
1.160 Half charged
1.060 Discharged
15A max.
5A max.
12.7V Fully charged
12.3V Half charged
11.9V Discharged
[Voltage that is checked 20 minutes after the key is
removed with all the lights turned off]
5A max.

ELECTRICAL COMPONENTS
412
No.FUSEAMPERECIRCUIT
1 ABS60Anti±lock brake system
2 DRL NO.25Daytime Running Light System
3 HEAD
LH (LWR)10Left±hand headlight (low beam)
4 HEAD
RH (LWR)10Right±hand headlight (low
beam)
5 ALT100Charging system
6 T±STK40No circuit
7 HTR50Air conditioning system, Seat
heater
8 MAIN40Headlight, Starting system
9 DOME7.5
Theft deterrent system, Clock,
Door courtesy light, Interior
light, Ignition switch light, Vanity
light, Wireless remote control
system
10 ECU±B10Air conditioning system,
Power seat system
11 RAD NO.120Audio system
12 HAZARD10Emergency flashers, Turn
signal lights

ELECTRICAL COMPONENTS
425
64E013

Driver's side instrument panel
1. Turn the ignition switch off and remove the
auxiliary box.
Determine which fuse may be causing the problem. The
auxiliary box shows the name of the circuit for each fuse.