2023 HYUNDAI SONATA Owners Manual

Foreword
1-6
Gasoline containing alcohol or
methanol
Gasohol, a mixture of gasoline and
ethanol (also known as grain alcohol) are
being marketed along with or instead
of leaded or unleaded gasoline. For
example, “E15” is a gasohol comprised of
15% ethanol and 85% gasoline.
Do not use gasohol containing more than
15% ethanol, and do not use gasoline or
gasohol containing any methanol. Either
of these fuels may cause drivability
problems and damage to the fuel
system, engine control system and
emission control system.
Discontinue using gasohol of any kind if
drivability problems occur.
“E85” fuel is an alternative fuel
comprised of 85 percent ethanol and 15
percent gasoline, and is manufactured
exclusively for use in Flexible Fuel
Vehicles. “E85” is not compatible with
your vehicle. Use of “E85” may result in
poor engine performance and damage
to your vehicle’s engine and fuel system.
HYUNDAI recommends that customers
do not use fuel with an ethanol content
exceeding 15 percent.
NOTICE
To prevent damage to your vehicle’s
engine and fuel system:

01
1-7
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help prevent
deposit formation in the engine. These gasolines will help the engine run
cleaner and enhance performance of
the Emission Control System. For more
information on TOP TIER Detergent
Gasoline, please go to the website (www.
toptiergas.com).
For customers who do not use TOP Tier
Detergent Gasoline regularly, and have
problems starting or the engine does
not run smoothly, detergent-based
fuel additives that you can purchase
separately may be added to the gasoline.
If TOP TIER Detergent Gasoline is
not available, one bottle of additive
added to the fuel tank according to the
maintenance schedule is recommended
(refer to the Maintenance Schedule in
chapter 8).
Additives are available from your
authorized HYUNDAI dealer along with
information on how to use them. Do not
mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in
another country, be sure to:

Foreword
1-8
VEHICLE DATA COLLECTION
AND EVENT DATA
RECORDERS
This vehicle is equipped with an event
data recorder (EDR). The main purpose
of an EDR is to record, in certain crash
or near crash-like situations, such as
an air bag deployment or hitting a
road obstacle, data that will assist in
understanding how a vehicle’s systems
performed. The EDR is designed to
record data related to vehicle dynamics
and safety systems for a short period of time, typically 30 seconds or less. The
EDR in this vehicle is designed to record
such data as:

2
2. Vehicle Information and Reporting Safety Defects
Exterior Overview .......................................................................................... 2-2
Interior Overview ........................................................................................... 2-6
Instrument Panel Overview ............................................................................ 2-7
Engine Compartment .................................................................................... 2-8
Dimensions .................................................................................................... 2-10
Engine Specification ..................................................................................... 2-10
Bulb Wattage .................................................................................................. 2-11
Tires and Wheels ........................................................................................... 2-12
Volume and Weight ...................................................................................... 2-13
Air Conditioning System ............................................................................... 2-13
Recommended Lubricants and Capacities .................................................2-14
Recommended SAE Viscosity Number ................................................................. 2-15
Vehicle Identification Number (VIN) ...........................................................2-16
Vehicle Certification Label ........................................................................... 2-16
Tire Specification and Pressure Label .........................................................2-17
Engine Number ............................................................................................. 2-17
Reporting Safety Defects ............................................................................. 2-18

2-2
Vehicle Information and Reporting Safety Defects
ExtErior ovErviEw
„„Front view
The actual shape may differ from the illustration.ODN8A019001
1. Hood ...................................................... 5-50
2. Headlamp .............................................. 8-58
3. Tires and wheels ................................... 8-38
4. Side view mirror .................................... 5-395. Panoramic sunroof *............................. 5-46
6. Front windshield wiper blades ............8-34
7. Windows ............................................... 5-42
* : if equipped

2-3
02
„„Front view„•N Line
The actual shape may differ from the illustration.ODN8N010001L
1. Hood ...................................................... 5-50
2. Headlamp .............................................. 8-58
3. Tires and wheels ................................... 8-38
4. Side view mirror .................................... 5-395. Panoramic sunroof *............................. 5-46
6. Front windshield wiper blades ............8-34
7. Windows ............................................... 5-42
* : if equipped

2-4
Vehicle Information and Reporting Safety Defects
„„Rear view
The actual shape may differ from the illustration.ODN8019002L
8. Door handle ........................................... 5-16
9. Fuel filler door ....................................... 5-56
10. Rear tail lamp ........................................ 8-59
11. Trunk ....................................................... 5-5112. Defroster
.............................................. 5-129
13. High mounted stop lamp ......................8-61
14. Antenna ................................................ 5-139
15. Rear view camera ..................................5-73

2-5
02
„„Rear view„•N Line
The actual shape may differ from the illustration.ODN8N010002L
8. Door handle ........................................... 5-16
9. Fuel filler door ....................................... 5-56
10. Rear tail lamp ........................................ 8-59
11. Trunk ....................................................... 5-5112. Defroster
.............................................. 5-129
13. High mounted stop lamp ......................8-61
14. Antenna ................................................ 5-139
15. Rear view camera ..................................5-73