Hyundai Ioniq: Warning and Indicator Lights / Regenerative Brake, Anti-lock Brake System (ABS) Warning Lights

Hyundai Ioniq (AE) 2017-2025 Owner's Manual / Convenient features of your vehicle / Instrument Cluster / Warning and Indicator Lights / Regenerative Brake, Anti-lock Brake System (ABS) Warning Lights

Regenerative Brake Warning Light

Hyundai Ioniq. Regenerative Brake, Anti-lock Brake System (ABS) Warning Lights

This warning light illuminates :

When you place the Engine Start/ Stop button to the ON position.
- It illuminates for approximately 3 seconds.
When the regenerative brake does not operate and the brake does not perform well. This causes the Brake Warning light and Regenerative Brake Warning Light to illuminate simultaneously.

In this case, drive safely and have your vehicle inspected by an authorized HYUNDAI dealer.

The operation of the brake pedal may be more difficult than normal and the braking distance can increase.

Anti-lock Brake System (ABS) Warning Light

Hyundai Ioniq. Regenerative Brake, Anti-lock Brake System (ABS) Warning Lights

This warning light illuminates:

When you place the Engine Start/ Stop button to the ON position.
- It illuminates for approximately 3 seconds and then goes off.
When there is a malfunction with the ABS (The normal braking system will still be operational without the assistance of the anti-lock brake system).
In this case, have the vehicle inspected by an authorized HYUNDAI dealer.

Parking Brake & Brake Fluid Warning Light

This warning light illuminates: When you place the Engine Start/ Stop button to the ON position. - It illuminates for approximately 3 seconds. - It remains on if the parking brake is applied...

Electronic Brake Force Distribution (EBD) System Warning Light

These two warning lights illuminate at the same time while driving: • When the ABS and regular brake system may not work normally. In this case, have the vehicle inspected by an authorized HYUNDAI dealer...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Special service tools

Special Service Tools Tool (Number and Name) Illustration Use 09581-2T100Piston expanderSpreading the front and rear disc brake piston.09580-3D100Air bleeding toolUsed when air bleeding brake system0k585-E8100Air bleeding toolUsed when air bleeding brake system09580-0U000Brake piston adjusterRemoval and installtion of the rear disc brake piston...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Inspection

Inspection[Battery Pack Assembly Troubleshooting Chart] • For SOC check, refer to "SOC Inspection"• For voltage check, refer to "Battery Voltage Inspection"• For battery voltage sensing circuit, refer to "Voltage Sensing Circuit Inspection"• For isolation resistance check, refer to "Isolation Resistance Inspection" [SOC Level and Follow-up] SOC Symptom Warning Lamp Follow-up MIL Service Fuel • Normal --- 10 - 15% • Motor torque limite (Acceleration delay)--ON• Refuel and check the SOC againON--• Repair the MIL or Service Lamp related system• Charge the battery by starting the engine• Refuel if necessary ONON--ON-OnONON 5 - 10% • EV Mode inhibited • FATC Inhibited • LDC Inhibited --ON• Refuel and check the SOC againON--• Repair the MIL or Service Lamp related system• Charge the battery by starting the engine • Refuel if necessaryONON--ON-ONONON 0 - 5% • Impossible to start ON--• Repair the MIL or Service Lamp related system• Start the engine with GDS to charge the battery• Refuel if necessary ONON--ON-ONONON 0% ON--• Repair the MIL or Service Lamp related system• If necessary, Replace Battery Pack• Refuel if necessary [SOC Inspection]1...