2011 Hyundai Sonata ECU

Maintenance18
7EXPLANATION OF SCHEDULED MAINTENANCE ITEMSEngine oil and filterThe 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 beltsInspect all drive belts for evidence of
cuts, cracks, excessive wear or oil satu-
ration and replace if necessary. Drive
belts should be checked periodically for
proper tension and adjusted as neces-
sary.
Fuel filterA 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-
nectionsCheck 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 capThe 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
hosesInspect 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.

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727
Maintenance
PARKING BRAKEChecking the parking brakeType ACheck whether the stroke is within spec-
ification when the parking brake pedal is
depressed with 44 lb (20 kg, 196 N) of
force. Also, the parking brake alone should
securely hold the vehicle on a fairly steep
grade. If the stroke is more or less than
specified, have the parking brake adjusted
by an authorized HYUNDAI dealer.
Stroke : 4~5 notch
Type BCheck the stroke of the parking brake by
counting the number of “clicks’’ heard
while fully applying it from the released
position. Also, the parking brake alone
should securely hold the vehicle on a fair-
ly steep grade. If the stroke is more or
less than specified, have the parking
brake adjusted by an authorized
HYUNDAI dealer.
Stroke : 5 “clicks’’ at a force of 44 lbs (20 kg, 196 N).

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733
Maintenance
For best battery service• Keep the battery securely mounted.
• Keep the battery top clean and dry.
• Keep the terminals and connectionsclean, 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.
• If the vehicle is not going to be used for an extended time, disconnect the bat-
tery cables.BATTERY

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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.
(Continued)

(Continued)
If electrolyte gets on your
skin, thoroughly wash the
contacted area. If you feel a
pain or a burning sensa-
tion, get medical attention
immediately.Wear eye protection whencharging or working near a
battery. Always provide
ventilation when working in
an enclosed space.
An inappropriately disposed battery can be harmful 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.
(Continued)

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Maintenance52
73. Check the removed fuse; replace it if it
is blown. To remove or insert the fuse,
use the fuse puller in the engine com-
partment fuse 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.
Multi fuseIf the multi fuse is blown, it must be
removed as follows:
1. Turn off the engine.
2. Disconnect the negative battery cable.
3. Remove the fuse panel on the rightside in the engine compartment.
4. Remove the nuts shown in the picture above.
5. Replace the fuse with a new one of the same rating.
6. Reinstall in the reverse order of removal.
✽NOTICEIf the multi fuse is blown, consult an
authorized HYUNDAI dealer.
CAUTION
After checking the fuse panel in the
engine compartment, securelyinstall the fuse panel cover. If not,electrical failures may occur from water contact.

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755
Maintenance
Description Fuse rating Protected component
CLOCK 10A BCM, Clock, Front Monitor, Smart Key Module, PDM, Audio, Power Outside Mirror Switch, AMP,
JBL AMP, Overhead Console Lamp, Rear Camera Module, A/V & Navigation Head Unit
SPARE 10A -
A/CON 7.5A E/R Fuse & Relay Box(Blower Relay), A/C Control Module
S/HEATER RR 20A Rear Seat Warmer Switch LH/RH
SUN ROOF 20A Sunroof Motor
POWER OUTLET 1 15A Front Power Outlet #1
MODULE 2 7.5A BCM, Rear Camera Module, Electro Chromic Mirror, Sunroof Motor
WIPER 25A E/R Fuse & Relay Box(Wiper Relay), Front Wiper Motor, Multifunction Switch(Wiper)
MODULE 5 7.5A PDM
DR LOCK 20A Door Lock/Unlock Relay
POWER OUTLET 1 15A Front Power Outlet #2
MODULE 1 7.5A Instrument Cluster(ON/START Input), Clock, Sport Mode Switch IND., Audio,
Driver/Passenger Seat Warmer Module, BCM
IG 1 20A E/R Fuse & Relay Box (Fuse - ESC 3 10A, ECU 4 10A, B/UP LP 10A, TCU 2 10A)
SPARE 20A -
A/BAG 15A SRS Control Module, Telltale Lamp, Passenger Weight Classification Sensor
START 1 7.5A W/O Smart Key-Ignition Lock Switch, Burglar Alarm Relay, E/R Fuse & Relay Box (Start 1 Relay)
With Smart Key-PDM
MDPS 10A Yaw Rate Sensor, ESP Off Switch, EPS Control Module
PDM 3 7.5A PDM, Smart Key Module
SPARE 10A -
A/BAG IND. 7.5A Instrument Cluster(IND.)

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Maintenance56
7Engine compartment main fuse panel
Description Fuse rating Protected component
MULTI FUSE B+ 2 60A
I/P Junction Box (Fuse - SUNROOF 20A, DR LCOK 20A, IPS 1 /IPS 4 /IPS 6 /IPS 7 /IPS
9, Power Connector - ROOM LP 10A)
B+ 3 60A I/P Junction Box (Fuse - P/WDW ASST 20A, P/WDW LH 25A, P/WDW RH 25A , TRUNK
10A, S/HEATER FRT 15A, PDM 25A, MODULE 3 7.5A, SAFETY POWER WINDOW 25A,
Power Connector - AUDIO 15A, Power Window Relay)
IGN 1 40A W/O Smart Key - Ignition Switch, With Smart Key - ACC Relay, IG1 Relay
ESC 1 40A ESC Module, Multipurpose Check Connector
RR HTD 40A RR HTD Relay
BLOWER 40A Blower Relay
B+ 4 60A I/P Junction Box (Fuse - P/SEAT DRIV 30A, AMP 30A, PDM 2 7.5A, IPS 2 /IPS 3 /IPS 5
/IPS 8)
MDPS 80A EPS Control Module
FUSE A/CON 10A A/C Control Module (Auto)
B/UP LP 10A Back-up Lamp Switch (M/T), B/UP LP Relay (A/T)
ESC 3 10A ESC Module, Multipurpose Check Connector
TCU 2 10A Vehicle Speed Sensor (M/T), Transaxle Range Switch (A/T), Start2 Relay
ECU 4 10A Stop Lamp Switch, PCM
IGN 2 30A W/O Smart Key - Ignition Switch, Start1 Relay, With Smart Key - Start 1 Relay, IG 2 Relay
EMS 40A EMS Box (Fuse - HORN 15A, ECU 3 10A, ECU 1 30A, F/PUMP 20A)
ESC 2 30A ESC Module, Multipurpose Check Connector
WIPER 10A PCM
RR HTD IND 10A A/C Control Module
AMS 15A Battery Sensor
TCU 1 20A PCM

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757
Maintenance
Description Fuse rating Protected component
FUSE AMS 15A Battery Sensor
TCU 1 20A PCM
STOP LP 15A Stop Lamp Switch
DEICER 20A Deicer Relay
SPARE 20A -
C/FAN 40A C/Fan Low Relay, C/Fan High Relay
IGN COIL 20A Ignition Coil #1 /#2 /#3 /#4, Condenser
SENSOR 1 15A Oxygen Sensor (Up), Oxygen Sensor (Down)
SENSOR 2 15A
Immobilizer Module, Camshaft Position Sensor #1 /#2, Purge Control Solenoid Valve,
Variable Intake Solenoid Valve, Crankshaft Position Sensor, Oil Control Valve #1 /#2,
Canister Close Valve
INJECTOR 15A F/Pump Relay
F/PUMP 20A F/Pump Relay
ECU 3 10A PCM
HORN 15A Horn Relay, B/Horn Relay
ECU 1 30A ECU Relay
SPARE 25A -
SPARE 20A -
SPARE 15A -
SPARE 10A -

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Maintenance62
7High mounted stop light
replacementIf the light is not operating, have the vehi-
cle checked by an authorized HYUNDAI
dealer.
License plate light bulb replace-
ment1. Loosen the retaining screws with a
philips head screwdriver.
2. Remove the soket by turning it connterclockwise.
3. Remove the bulb by pulling it straight out.
4. Install a new bulb.
5. Reinstall the bulb assembly securely with the retaining screws.

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