When ignition switch is turned to ON, the indicator light illuminates, then goes off if the ESC system is operating normally.
The ESC indicator light blinks whenever ESC is operating or illuminates when ESC fails to operate.
ESC OFF indicator light comes on when the ESC is turned off with the button.
CAUTION
Driving with varying tire or wheel sizes may cause the ESC system to malfunction. When replacing tires, make sure they are the same size as your original tires.
WARNING
The Electronic Stability Control system is only a driving aid; use precautions for safe driving by slowing down on curved, snowy, or icy roads. Drive slowly and don’t attempt to accelerate whenever the ESC indicator light is blinking, or when the road surface is slippery.
Kia Niro 2017 (DE HEV) Service Manual: Description and operation
Description
The HCU (Hybrid Control Unit) controls the overall hybrid systems and is connected
with each of the control modules (ECM, TCM, MCU, BMS, ECU, etc.) via CAN. The hybrid
system is controlled based on the brake switch signals.
...
Kia Niro (DE HEV) Owners Manual: Maintenance when trailer towing
Your vehicle will need service more often when you regularly pull a trailer.
Important items to pay particular attention to include engine oil, transaxle fluid,
axle lubricant and cooling system fluid. Brake condition is another important item
to frequently check. Each item is covered in this ...