2012 Hyundai Equus ECU

621
What to do in an emergency
Emergency towing
If towing is necessary, we recommend
you to have it done by an authorized
HYUNDAI dealer or a commercial tow
truck service.If towing service is not available in an
emergency, your vehicle may be tem-
porarily towed using a cable or chain
secured to the emergency towing hook
under the front (or rear) of the vehicle.
Use extreme caution when towing the
vehicle. A driver must be in the vehicle to
steer it and operate the brakes.
Towing in this manner may be done only
on hard-surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, power train, steering and
brakes must all be in good condition.
• Do not use the tow hooks to pull a vehi-
cle out of mud, sand or other condi-
tions from which the vehicle cannot be
driven out under its own power.
• Avoid towing a vehicle heavier than the
vehicle doing the towing.
• The drivers of both vehicles should
communicate with each other frequent-
ly.• Before emergency towing, check that
the hook is not broken or damaged.
• Fasten the towing cable or chain
securely to the hook.
• Do not jerk the hook. Apply steady and
even force.
• To avoid damaging the hook, do not
pull from the side or at a vertical angle.
Always pull straight ahead.
OVI069018
OVI069019
Front
Rear
CAUTION
• Attach a towing strap to the tow
hook.
• Using a portion of the vehicle
other than the tow hooks for tow-
ing may damage the body of your
vehicle.
• Use only a cable or chain specifi-
cally intended for use in towing
vehicles. Securely fasten the
cable or chain to the towing hook
provided.

715
Maintenance
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the car is being
driven in severe conditions, more fre-
quent oil and filter changes are required.
Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil satu-
ration and replace if necessary.
Fuel filter
A clogged filter can limit the speed at
which the vehicle may be driven, damage
the emission system and cause multiple
issues such as hard starting. If an exces-
sive amount of foreign matter accumu-
lates in the fuel tank, the filter may
require replacement more frequently.
After installing a new filter, run the engine
for several minutes, and check for leaks
at the connections. Fuel filters should be
installed by an authorized HYUNDAI
dealer.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and con-
nections for leakage and damage. Have
an authorized HYUNDAI dealer replace
any damaged or leaking parts immedi-
ately.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
that a new vapor hose or fuel filler cap is
correctly replaced.
Vacuum crankcase ventilation
hoses (if equipped)
Inspect the surface of hoses for evidence
of heat and/or mechanical damage. Hard
and brittle rubber, cracking, tears, cuts,
abrasions, and excessive swelling indi-
cate deterioration. Particular attention
should be paid to examine those hose
surfaces nearest to high heat sources,
such as the exhaust manifold.
Inspect the hose routing to assure that
the hoses do not come in contact with
any heat source, sharp edges or moving
component which might cause heat dam-
age or mechanical wear. Inspect all hose
connections, such as clamps and cou-
plings, to make sure they are secure, and
that no leaks are present. Hoses should
be replaced immediately if there is any
evidence of deterioration or damage.

733
Maintenance
For best battery service
The battery is in the trunk.
• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connections
clean, tight, and coated with petroleum
jelly or terminal grease.
• Rinse any spilled electrolyte from the
battery immediately with a solution of
water and baking soda.
BATTERY
OBH071018N
WARNING- Battery
dangers
Always read the following
instructions carefully when
handling a battery.
Keep lighted cigarettes and
all other flames or sparks
away from the battery.
Hydrogen, a highly com-
bustible gas, is always
present in battery cells and
may explode if ignited.
Keep batteries out of the
reach of children because
batteries contain highly
corrosive SULFURIC ACID.
Do not allow battery acid to
contact your skin, eyes,
clothing or paint finish.
If any electrolyte gets into
your eyes, flush your eyes
with clean water for at least
15 minutes and get immedi-
ate medical attention.
If electrolyte gets on your
skin, thoroughly wash the
contacted area.
(Continued)
(Continued)
If you feel a pain or a burn-
ing sensation, get medical
attention immediately.
Wear eye protection when
charging or working near a
battery. Always provide
ventilation when working in
an enclosed space.
An inappropriately dis-
posed battery can be harm-
ful to the environment and
human health. Dispose the
battery according to your
local law(s) or regulation.
• When lifting a plastic-cased bat-
tery, excessive pressure on the
case may cause battery acid to
leak, resulting in personal injury.
Lift with a battery carrier or with
your hands on opposite corners.
• Never attempt to recharge the
battery when the battery cables
are connected.
• The electrical ignition system
works with high voltage. Never
touch these components with the
engine running or the ignition
switched on.
(Continued)

749
Maintenance
Engine compartment fuse
replacement
1. Turn the engine start/stop button and
all other switches off.
2. Remove the fuse panel cover by
pressing the tab and pulling up.3. Check the removed fuse; replace it if it
is blown. To remove or insert the fuse,
use the fuse puller in the front passen-
ger’s side panel.
4. Push in a new fuse of the same rating,
and make sure it fits tightly in the clips.
If it fits loosely, consult an authorized
HYUNDAI dealer.
Main fuse
If the main fuse is blown, it must be
removed as follows:
1. Remove the fuse panel on the right
side in the engine compartment.
2. Remove the nuts shown in the picture
above.
3. Replace the fuse with a new one of the
same rating.
4. Reinstall in the reverse order of
removal.
✽NOTICE
If the main fuse is blown, consult an
authorized HYUNDAI dealer.
CAUTION
After checking the fuse panel in the
engine compartment, securely
install the fuse panel cover. If not,
electrical failures may occur from
water contact.
OBH078025
OBH078023L
OBH078024L

751
Maintenance
Instrument panel (Driver’s side fuse panel)
Description Fuse rating Protected component
P/WDW (RH) 30A Rear Power Window Module RH, Passenger Power Window Module
P/WDW (LH) 30A Rear Power Window Module LH, Driver Power Window Module
MODULE 3 10ASteering Angle Sensor, Console Switch LH/RH, ECS Control Module, Pre-Safe Seat Belt LH/RH, Tire
Pressure Monitoring Module, Key Lock Unit
CRUISE SW 10AMultifunction Switch (Remocon), Crash Pad Switch, A/C Control Module, Alternator, Instrument
Cluster, Rear Seat Warmer Module LH/RH, Rear CCS Control Module LH/RH, Driver/Passenger CCS
Control Module (With CCS), Driver/Passenger Seat Warmer Module (W/O CCS)
ESCL SW 10A FOB Holder, Start Stop Button Switch
CLUSTER 10A Instrument Cluster
INTELLIGENT
A/PEDAL10A IAP ECU
KEY ILLUMINATION 10A Start Stop Button Switch, FOB Holder
P/DOOR (RL) 15A Rear Power Door Latch LH, Rear Door Window Curtain LH
IG KEY SUPPLY (IG1) 30AE/R Junction Box (Fuse : EHPS 10A, ECU(IG1) 10A, TCU 15A, ESP 10A, STOP LP 10A, AFLS 10A,
INHIBITOR SW 10A, CRUISE 10A, INJECTOR DRIVE BOX 10A)
DR LOCK DRV 10A Driver Door Module
P/DOOR DRV 15A Front Door Mood Lamp LH, Driver Power Seat Switch, Driver Power Door Latch
A/BAG IND 10A Instrument Cluster (A/Bag IND.)
AFLS 10AAuto Head Lamp Leveling Device Sensor (W/O AFLS), Adaptive Front Lighting Module (With AFLS),
Head Lamp LH/RH
PDM1 10A PDM
RDM 10A Data Link Connector, Rear Smart Outside Handle LH/RH, Rear Door Module LH/RH
SHIFT LOCK 10A SPORT Mode Switch

Maintenance
52 7
Description Fuse rating Protected component
MODULE 2 10AMultifunction Switch, Tilt & Telescopic Module, Driver/Passenger Door Module, Power Trunk Lid
Control Module, Electro Chromic Mirror, LDWS Camera, Front & Rear Parking Assist Control Module,
EPB Control Module, Driver/Passenger IMS Control Module, E/R Junction Box (FAM)
MODULE 1 10AMultifunction Switch, Instrument Cluster (IND.), Power Trunk Lid Control Module, Driver/Passenger
Door Module, Rear Curtain Module, E/R Junction Box (FAM), Front Smart Outside Handle LH/RH,
Passenger IMS Control Module
P/HANDLE 15A Tilt & Telescopic Module
ECS 15A ECS Control Module
A/BAG 15A SRS Control Module
AUDIO(B+) 15A Audio, Front/Rear Monitor, AV Head Module, Rear Audio Switch, Media Module, Tunner Unit, MTS Unit
S/HEATER DRV 15A Driver CCS Control Module (With CCS), Driver Seat Warmer Module (With CCS)
P/TRUNK 30A Power Trunk Lid Control Module
F/LID 10A Fuel Filler Switch
AUDIO (IG1) 10A AV Head Module, Audio, Active Headrest Sensor Module, Camera Module, MTS Unit
A/CON (B+) 10A Tire Pressure Monitoring Module, A/C Control Module, Analog Clock
I.O.D 30A Fuse : A/CON (B+) 10A, AUDIO (B+) 15A, MODULE 1 10A
S/HEATER RL 15A Rear CCS Control Module LH (With CCS), Rear Seat Warmer Module LH (W/O CCS)
DR LOCK PASS 15A Passenger Door Module
PDM 2 10A IPM,PDM
A/CON (IG1) 10A A/C Control Module
RF RECEIVER 10A Auto Light Sensor & Security Indicator, RF Receiver

755
Maintenance
Description Fuse rating Protected component
ECU 30A Engine Control Relay
BLOWER 40A Blower Relay
IGN SW 2
(PRESAFETY PASS)40A Ignition Switch (IG 2, START), Presafety Seat Belt Passenger
RR HTD 40A E/R Junction Box Fuse (AQS 10A, WASHER 15A)
IGN SW 1
(PRESAFETY DRV)40A Ignition Switch (IG 1, ACC), Presafety Seat Belt Driver
A/CON 10A A/C Control Module
EPB 1 15A Electric Parking Brake Module
EPB 2 15A Electric Parking Brake Module
HORN 15A Horn Relay
IPM 10A IPM, Head Lamp (Low) Relay
AQS 10A AQS Sensor, Electronic Control Wiper Module, Blower Relay
DEICER 15A Heated Glass (FR) Relay
WASHER 15A Washer Relay
WIPER 30A Wiper Motor
HTD MIRR 10A A/C Control Module, Power Outside Mirror & Mirror Folding Motor LH/RH
TCU 15A TCM
AFLS 10A Head Lamp LH/RH
EHPS 10A EHPS Module
VDC/ESC 10A ESP Control Module, Multipurpose Check Connector
ECU(IG1) 10A ECM
IGN COIL 20A Ignition Coil #1,2,3,4,5,6
INJECTOR(B+) 15A Injector Drive Box

Maintenance
56 7
Description Fuse rating Protected component
SENSOR 110AECM, Mass Air Flow Sensor, Oxygen Sensor #1,2,3,4
SENSOR 2 10ACanister Purge Control Solenoid Valve, Variable Intake Manifold Valve, Oil Control Valve, ECM,
Cooling Fan Relay, Immobilizer Module, Fuel Pump Resister
SENSOR 3 10A ECM, Injector #1~#6, Fuel Pump Relay
H/LP RH 15A Head Lamp RH
H/LP LH 15A Head Lamp LH
INJECTOR(IG1) 10A Injector Drive Box
CRUSIE 10A Smart Cruise Control Module
STOP LP 10A Stop Lamp Switch, Stop Lamp Relay, Generator,Vacuum Sw
ECU(B+) 15A ECM,TCM,Injector Drive Box
ROOM LP 10A Room Lamp Relay
F/PUMP 20A Fuel Pump Relay
START 30A Start Solenoid