2023 HYUNDAI TUCSON HYBRID spark plugs

06
6-55
Winter Precautions
Use high quality ethylene glycol coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because it
helps prevent corrosion in the cooling
system, lubricates the water pump and
prevents freezing. Be sure to replace or
replenish your coolant in accordance
with the maintenance schedule in
chapter 9. Before winter, have your
coolant tested to assure that its freezing
point is sufficient for the temperatures
anticipated during the winter.
Check battery and cables
Winter temperatures affect battery
performance. Inspect the battery and
cables, as specified in chapter 9. The
battery charging level can be checked
by an authorized HYUNDAI dealer or in a
service station.
If the vehicle is not used for a long time,
park the vehicle indoors if possible.
Change to “winter weight” oil if
necessary
In some regions during winter, it is
recommended to use the “winter
weight” oil with lower viscosity In
addition, replace the engine oil and filter
if it is close to the next maintenance
interval. Fresh engine oil ensures
optimum engine operation during the
winter months. For further information,
refer to chapter 2. When you are not sure
about a type of winter weight oil, consult
an authorized HYUNDAI dealer.Check spark plugs and ignition system
Inspect the spark plugs, as specified in
chapter 9. If necessary, replace them.
Also check all ignition wirings and
components for any cracks, wear-out,
and damage.
To prevent locks from freezing
To prevent the locks from being frozen,
spray approved de-icing fluid or glycerin
into key holes. When a lock opening is
already covered with ice, spray approved
de-icing fluid over the ice to remove it.
When an internal part of a lock freezes,
try to thaw it with a heated key. Carefully
use the heated key to avoid an injury.
Use approved window washer anti-
freeze solution in system
To prevent the window washer from
being frozen, add authorized window
washer anti-freeze solution, as specified
on the window washer container.
Window washer anti-freeze solution is
available from an authorized HYUNDAI
dealer, and most vehicle accessory
outlets. Do not use engine coolant or
other types of anti-freeze solution, to
prevent any damage to the vehicle paint.

09
9-9
The following maintenance services must be performed to ensure good emission control and performance.
Keep receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of
service is determined by whichever occurs first.
MAINTENANCE INTERVALS
MAINTENANCE
ITEM Number of months or driving distance, whichever comes first
Months 12 24 36 48 60 72 84 96 108 120 132 144 156 168 180
Milesx1,000 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120
Kmx1,000 13 26 39 52 65 78 91 104 117 130 143 156 169 182 195
HSG belts
*1
Inspect every 8,000 miles (13,000 km) or 12 months.
Replace every 64,000 miles (104,000 km) or 48 months
Engine oil and engine oil filter
*2 *3
RRRRRRRRRRRRRRR
Fuel additives
*4
Add every 8,000 miles (13,000 km) or 12 months
Air cleaner filter I I R I I R I I R I I R I I R
Spark plugs Replace every 48,000 miles (78,000 km)
Rotate tires Rotate tires every 8,000 miles (13,000 km) or 12 months
Cabin air filter I R I R I R I R I R I R I R I
Engine coolant At first, replace at 120,000 miles (200,000 km) or 120 months.
After that, replace every 24,000 miles (40,000 km) or 24 months
Inverter coolant HEV
At first, replace at 120,000 miles (200,000 km) or 120 months.
After that, replace every 24,000 miles (40,000 km) or 24 months
PHEV Replace every 35,000 miles (60,000 km) or 36 months
Intercooler, in/out hose At first, inspect at 5,000 miles (8,000 km) or 6 months,
After that, inspect every 20,000 miles (32,000 km) or 24 months
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.*1 :
The drive belt should be replaced when cracks occur or tension is reduced excessively.
*2 :
Requires API SN PLUS (or above) grade engine oil. If a lower grade engine oil is used, then the engine oil and engine oil filter
must be replaced at every 5,000 miles (8,000 km) or 6 months as indicated for severe maintenance condition.
*3 :
As it is normal for engine oil to be consumed during driving, the amount of engine oil should be checked regularly.
*4 :
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.
Normal Maintenance Schedule

Maintenance9-12
Maintenance Under Severe Usage Conditions
The following items must be serviced more frequently on cars mainly used under severe
driving conditions. Refer to the chart below for the appropriate maintenance intervals.
R : Replace
I : Inspect and if necessary, adjust, correct, clean or replace
Maintenance item Maintenance
operation Maintenance Intervals Driving
condition
Engine oil and engine oil filter R E
very 5,000 miles
(8,000 km) or 6 months D, H, I, L
Air cleaner filter R Replace more
frequently depending on the condition C, E
Spark plugs R Replace more
frequently depending on the condition A, B, F, G, H,
I, K
HSG (Hybrid Starter &
Generator) belt R
Every 30,000 miles
(48,000km) or
24 months B, C, D, E, I, K
I Every 5,000 miles
(8,000km) or
6 months
Automatic transmission fluid R Every 60,000 miles
(96,000km) A, C, D, E, F, G,
H, I, K
Steering gear rack, linkage and
boots IInspect more frequently
depending on the condition C, D, E, F, G,
H, I
Front suspension ball joints I Inspect more frequently
depending on the condition C, D, E, F, G
Disc brakes and pads, calipers
and rotors IInspect more frequently
depending on the
condition C, D, G, H, J, K
Parking brake I Inspect more frequently
depending on the condition C, D, G, H

Maintenance9-14
Engine Oil and Filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
HSG (Hybrid Starter & Generator)
Belt
The HSG belt should be changed at the
intervals specified in the maintenance
schedule.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
Have an authorized HYUNDAI dealer
replace any damaged or leaking parts
immediately.
Fuel Filter
The fuel filter is considered to be
maintenance free but periodic inspection
is recommended for this maintenance
depends on fuel quality. If there are
some important matters like fuel flow
restriction, surging, loss of power, hard
starting problem etc., replace the fuel
filter immediately. Consult an authorized
HYUNDAI dealer for details.
Vapor Hose and Fuel Filler Cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Your
HYUNDAI dealer will help to determine if
replacement is needed.
Air Cleaner Filter
A genuine HYUNDAI air cleaner filter
is recommended when the filter is
replaced.
Spark Plugs
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to
wipe the inside and outside of the boot
bottom of the ignition coil and the
insulator of the spark plug with a soft
cloth to prevent contamination of the
spark plug insulator.
WARNING
Do not remove spark plugs from the
vehicle when the engine is hot. You
may damage the engine and may also
risk burn injury.
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Engine Coolant/Inverter Coolant
The coolant should be changed at the
intervals specified in the maintenance
schedule.
Automatic Transmission Fluid
The automatic transmission fluid level
does not need to be checked under
normal usage conditions.
Have the automatic transmission fluid
changed by an authorized HYUNDAI
dealer according to the maintenance
schedule.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS