brake fluid Hyundai Sonata Plug-in Hybrid 2017 Owner's Manual

1-6
Your vehicle at a glance
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The actual engine room in the vehicle may differ from the illustration.
OLFH014005K
1. Engine oil filler cap ...........................7-28
2. Engine oil dipstick .............................7-27
3. Radiator cap .....................................7-29
4. Engine coolant reservoir ...................7-30
5. Brake fluid reservoir ..........................7-33
6. Air cleaner.........................................7-35
7. Inverter coolant reservoir ..................7-31
8. Windshield washer fluid reservoir .....7-34
9. Fuse box ...........................................7-60

3-68
Convenient features of your vehicle
Parking Brake & BrakeFluid Warning Light
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position
- It illuminates for approximately 3seconds and then goes off.
- It remains on if the parking brake is applied.
When the parking brake is applied.
When the brake fluid level in the reservoir is low.
- If the warning light illuminateswith the parking brake released, it
indicates the brake fluid level in
reservoir is low.
When the regenerative brake does not operate.
When only one of the dual system is working, the stopping distance
will be increased
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. Stop the vehicle, immediately check the brake fluid level and add
fluid, if necessary (For more infor-
mation, refer to "Brake Fluid" in
the chapter 7). After adding brake
fluid, check all brake components
for fluid leaks. If a brake fluid leak is
found, or if the warning light
remains on, or if the brakes do not
operate properly, do not drive the
vehicle. Have the vehicle inspected
by an authorized HYUNDAI dealer.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This means
you still have braking on two wheels
even if one of the dual systems fails.
With only one of the dual systems
working, longer pedal travel and
greater pedal pressure is required. If the brakes fail, while driving, shift
to a lower gear for additional engine
braking and stop the vehicle as soon
as it is safe to do so.
(red color)
Driving the vehicle with a warn-
ing light ON is dangerous. If the
Parking Brake & Brake Fluid
Warning Light illuminates with
the parking brake released, it
indicates that the brake fluid
level is low.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING

3-70
Convenient features of your vehicle
Information
When the ABS warning light illumi-
nates, or when both the ABS and the
Parking Brake & Brake Fluid warning
lights illuminate, the speedometer, the
odometer, or the tripmeter may not
properly operate. Also, the EPS warn-
ing light may illuminate and the steer-
ing effort may increase or decrease.
In this case, have the vehicle inspected
by an authorized HYUNDAI dealer as
soon as possible.
Electronic Parking Brake (EPB) WarningLight (if equipped)
This warning light illuminates:
When the Engine Start/Stop button
is in the ON position.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the EPB.
In this case, have the vehicle
inspected by an authorized
HYUNDAI dealer.
Information
The Electronic Parking Brake (EPB)
warning light may illuminate, when
the Electronic Stability Control (ESC)
indicator illuminates due to ESC mal-
function (This does not indicate EPB
malfunction).
i
i
When both the ABS and Parking
Brake & Brake Fluid Warning
Lights are on, the brake system
will not work normally and you
may experience an unexpected
and dangerous situation during
sudden braking.
In this case, avoid high speed
driving and abrupt braking.
Have the vehicle inspected by
an authorized HYUNDAI dealer
as soon as possible.
WARNINGEPB

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-4
Owner's responsibility ......................................................7-4
Owner maintenance precautions ..................................7-4
Owner maintenance ...............................................7-5
Owner maintenance schedule ........................................7-6
Scheduled maintenance services.........................7-8
Normal maintenance schedule .......................................7-9
Maintenance under severe usage conditions ..........7-22
Explanation of scheduled maintenance
items.......................................................................7\
-24
Engine oil ..............................................................7-27
Checking the engine oil level .......................................7-27
Checking the engine oil and filter ..............................7-28
Engine coolant/inverter coolant .......................7-29
Checking the engine/inverter coolant level .............7-29
Changing engine coolant...............................................7-32
Hybrid starter & generator (HSG) belt.............7-32
Checking the hybrid starter &
generator (HSG) belt ......................................................7-32
Brake fluid ............................................................7-33
Checking the brake fluid level .....................................7-33
Washer fluid .........................................................7-34
Checking the washer fluid level ..................................7-34
Parking brake .......................................................7-34
Checking the parking brake .........................................7-34
Air cleaner ............................................................7-35
Filter replacement ...........................................................7-35
Climate control air filter .....................................7-37
Filter inspection ...............................................................7-37
Wiper blades .........................................................7-39
Blade inspection ..............................................................7-39
Blade replacement ..........................................................7-39
Battery...................................................................7-41
For best battery service................................................7-42
Battery recharging .........................................................7-42
Reset features .................................................................7-43
Tires and wheels ..................................................7-44
Tire care ........................................................................\
....7-44
Recommended cold tire inflation pressures.............7-45
Check tire inflation pressure........................................7-46
Tire rotation .....................................................................7-4\
7
Wheel alignment and tire balance ..............................7-48
Tire replacement .............................................................7-48
Wheel replacement .........................................................7-49
Tire traction ......................................................................7-\
49
Tire maintenance ............................................................7-50
Tire sidewall labeling ......................................................7-50
Tire terminology and definitions.................................7-54
7

7-3
7
Maintenance
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1. Engine oil filler cap
2. Engine oil dipstick
3. Radiator cap
4. Engine coolant reservoir
5. Brake fluid reservoir
6. Air cleaner
7. Inverter coolant reservoir
8. Windshield washer fluid reservoir
9. Fuse box
The actual engine compartment the vehicle
may differ from the illustration.
OLFH014005K

7-6
Maintenance
Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the enginecoolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
While operating your vehicle:
Note any changes in the sound ofthe exhaust or any smell of
exhaust fumes in the vehicle.
Check for vibrations in the steering wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead posi-
tion.
Notice if your vehicle constantly turns slightly or "pulls" to one side
when traveling on smooth, level
road.
When stopping, listen and check for unusual sounds, pulling to one
side, increased brake pedal travel
or "hard-to-push" brake pedal.
If any slipping or changes in the operation of your transmission
occurs, check the transmission
fluid level.
Check the automatic transmission P (Park) function.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the stoplights, turn
signals and hazard warning flashers.
Check the inflation pressures of all tires including the spare for tires
that are worn, show uneven wear,
or are damaged.
Check for loose wheel lug nuts.
Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious
burns and other injuries.
WARNING

7-7
7
Maintenance
At least twice a year:(i.e., every Spring and Fall)
Check radiator, heater and air condi-
tioning hoses for leaks or damage.
Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Check the air conditioning system.
Inspect and lubricate automatic transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level.

7
Maintenance
7-11
Normal maintenance schedule (CONT.)
30,000 miles (48,000 km) or 24 months
❑Inspect vacuum hose
❑ Inspect air conditioning refrigerant
❑ Inspect brake hoses and lines
❑ Inspect drive shafts and boots
❑ Inspect exhaust pipe and muffler
❑ Inspect HSG belt *
2
(30,000 miles (48,000 km) or 48 months)
❑ Inspect front brake disc/pads, calipers
❑ Inspect rear brake disc/pads
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Inspect brake fluid
❑ Inspect fuel filter *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
(Continued)
(Continued)
❑Replace air cleaner filter
❑ Replace engine oil and filter
(30,000 miles (48,000 km) or 48 months)
❑ Add fuel additive *
1
(30,000 miles (48,000 km) or 48 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7
Maintenance
7-13
Normal maintenance schedule (CONT.)
52,500 miles (84,000 km) or 42 months
❑Inspect air cleaner filter
❑ Inspect HSG belt *2
(52,500 miles (84,000 km) or 84 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(52,500 miles (84,000 km) or 84 months)
❑ Add fuel additive *
1
(52,500 miles (84,000 km) or 84 months)
60,000 miles (96,000 km) or 48 months
❑ Inspect vacuum hose
❑ Inspect air conditioning refrigerant
❑ Inspect brake hoses and lines
❑ Inspect drive shafts and boots
❑ Inspect exhaust pipe and muffler
❑ Inspect front brake disc/pads, calipers
❑ Inspect rear brake disc/pads
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Inspect brake fluid
❑ Inspect fuel filter *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Replace HSG belt *
2
(60,000 miles (96,000 km) or 48 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
(Continued)
*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

Maintenance
7-16
Normal maintenance schedule (CONT.)
90,000 miles (144,000 km) or 72 months
❑Inspect vacuum hose
❑ Inspect air conditioning refrigerant
❑ Inspect brake hoses and lines
❑ Inspect drive shafts and boots
❑ Inspect exhaust pipe and muffler
❑ Inspect front brake disc/pads, calipers
❑ Inspect rear brake disc/pads
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Inspect brake fluid
❑ Inspect fuel filter *
3
❑Inspect fuel cap, fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Inspect HSG belt *
2
(90,000 miles (144,000 km) or 144 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
(Continued)
(Continued)
❑Replace engine oil and filter
(90,000 miles (144,000 km) or 144 months)
❑ Add fuel additive *
1
(90,000 miles (144,000 km) or 144 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.