check engine lexus LS400 1999 Electrical Components / LEXUS 1999 LS400 (OM50514U) Owner's Guide

ENGINE
410
62L007-2

1Reservoir cap 2Upper line 3Lower line
Look at the see±through coolant reservoir when the
engine is cold. The coolant level is satisfactory if it
is between theºFULLº and ºLOWº lines on the
reservoir. If the level is low, add ethylene±glycol
type coolant for a proper corrosion protection of
aluminum components.
The coolant level in the reservoir will vary with engine
temperature. However, if the level is on or below the
ºLOWº line, add coolant. Bring the level up to the ºFULLº
line.
Always use ethylene±glycol type coolant for a proper
corrosion protection of aluminum components. See
information in the next column. If the coolant level drops within a short time after
replenishing,
there may be a leak in the system. V isually
check the radiator, hoses, engine coolant filler cap,
radiator cap and drain cock and water pump.
If you can find no leak, have your Lexus dealer test the
cap pressure and check for leaks in the cooling system.

CHASSIS
419
CHECKING POWER STEERINGFLUID
63L002±1
Check the fluid level on the dipstick. If necessary,
add automatic transmission fluid DEXRONII or III.
If the vehicle has been driven around 80 km/h (50 mph)
for 20 minutes (a little more in frigid temperatures), the
fluid is hot (60C ± 80C or 140 F ± 175F). You may
also check the level when the fluid is cold (about room
temperature, 10 C ± 30C or 50F ± 85F) if the engine
has not been run for about five hours.

ELECTRICAL COMPONENTS
446

1Terminals 2Hold±down clamp
Check the battery for corroded or loose
connections, cracks, or loose hold±down clamps.
1. If the battery is corroded, wash it off with a solution of
warm water and baking soda. Coat the terminals with
grease to prevent further corrosion.
2. If the connections are loose, tighten the clamp bolts
± but do not overtighten.
3. Tighten the hold±down clamp only enough to keep
the battery firmly in place. Overtightening may damage
the battery case.NOTICE
Make sure the engine and all accessories are
turned off before performing maintenance.
When checking the battery, remove the ground
cable first and reinstall it last.
Be careful not to cause a short circuit with tools.
Take care no solution gets into the batterywhen washing it.

ELECTRICAL COMPONENTS
454

Engine compartment 1Spare fuses
2Pull±out tool
1. Turn the ignition switch off and open the fuse box
lid.
Determine which f
use may be causing the problem. The
lid of the fuse box shows the name of the circuit for each
fuse.
64L013
2. Make sure the inoperative component is turned
off. Pull the suspected fuse straight out with the
pull±out tool and check it. If it has blown, push a new
fuse into the clips.

ELECTRICAL COMPONENTS
459
ADDING WASHER FLUID
64L017
If the washer tank becomes nearly empty, add
washer fluid.
You may use plain water as washer fluid. However, in
cold areas where temperatures range below the
freezing point, use washer fluid containing antifreeze.
This product is available at your Lexus dealer and most
auto parts stores. Follow the manufacturer's directions
for how much to mix with water.
NOTICE
Do not use engine antifreeze or any othersubstitute because it may damage your vehicle'spaint.
CHECKING THE HEADLIGHT AIM
(Vehicles with discharge headlight
only)