Hyundai Sonata LF: Indicators And Gauges / Troubleshooting

Hyundai Sonata LF 2014-2019 Service Manual / Body Electrical System / Indicators And Gauges / Troubleshooting

Troubleshooting

Error Item

Failure
Symptom

Inspection Items

Detailed Inspections

Relevant Parts/
Components

Screen display

TFT-LCD screen does not turn on

1.	Connector attachments

2.	Components

1.	Check the connector attachments

2.	Check B+, IGN and GND wiring

3.	Check the components

Connectors, wiring, fuses, dashboard

Warning light

Airbag warning lamp malfunction

1.	Connector attachments

C-CAN

3.	Components

1.	Check airbag + signal (connectors)

2.	Check C-CAN (ACU4) signal

3.	Check the FPC attachment inside the dashboard

ACU Connectors, wiring, fuses, dashboard

Mode conversion

Integrated driving mode malfunction

1.	Connector attachments

Switch

3.	Components

1.	Check the switch input (connector)

2.	Check the switch signal input (disconnection or shorting)

3.	Check conversion with dashboard component

Switch connector, wiring dashboard

Illumination

Interior light brightness cannot be controlled.

1.	Connector attachments

Switch

3.	Components

1.	Check if the light switch's input signal reaches the connector

2.	Check ILL- and DETENT signals

3.	Check the TAIL+ signal input

Switch connector, wiring dashboard

Warning Sound

No dashboard alarm

1.	Connector attachments

2.	Car speakers

3.	Components

1.	Check the speaker output connector

2.	Check the car speakers

Speaker connectors, wiring dashboard

Fuel indicator

Faulty fuel gauge indication

1.	Connector attachments

2.	Fuel sender

3.	Components

1.	Check fuel input and GND connectors (open, short or input resistance values)

2.	Check fuel sender

Fuel sender connector, wiring dashboard

Instrument Cluster Repair procedures

Removal • Put on gloves to protect your hands. • When prying with a flat-tip screwdriver, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage...

Power Door Locks

Components and Components Location Component Location 1. DDM (Driver Door Module)2. ADM (Assist Door Module)3. SJB (Smart Junction Block)4. Door lock knob5...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Auto Head Lamp Leveling Device

Components and Components Location Component Location 1. Head lamp leveling actuator (Built-in Head lamp)2. Head lamp leveling unit (Rear right only) Auto Head Lamp Leveling Unit Schematic Diagrams Circuit Diagram Auto Head Lamp Leveling Unit Description and Operation Description According to driving environment and loading state of vehicle, head lamp lighting direction is changed to keep the driver's visibility range and to protect the driver's vision from glare, aiming at safety driving...

Hyundai Sonata LF 2014-2019 Service Manual: Crankcase Emission Control System