Hyundai Ioniq (AE): LCD Display Messages / Check brakes/Check regenerative brakes, Check Virtual Engine Sound System
Check brakes/Check regenerative brakes
Either message is displayed when the brake performance is low or the regenerative brake does not work properly due to a failure in the brake system.
In this case, it may take longer for the brake pedal to operate and the braking distance may become longer.
Check Virtual Engine Sound System
This message is displayed when there is a problem with the Virtual Engine Sound System (VESS).
In this case, have your vehicle inspected by an authorized HYUNDAI dealer.
Refill inverter coolant This message is displayed when the inverter coolant is nearly empty. You should refill the inverter coolant. Stop vehicle and check brakes/ Stop vehicle and check regen.
Unplug vehicle to start (Plug-in hybrid vehicle) This message is displayed when you start the engine without unplugging the charging cable. Unplug the charging cable, and then start the vehicle.
Other information:
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Ambient Temperature Sensor. Repair procedures
Inspection1.Check the resistance of the ambient temperature sensor between terminals 1 and 2 whether it changes by changing the ambient temperature.1. Ambient Sensor (+)2. Sensor groundSpecification Ambient temperature [°C (°F)] Resistance between terminal 1 and 2 (
Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Heater Unit. Repair procedures
Replacement When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.1.Disconnect the negative (-) battery terminal.2.Recover the refrigerant with a recovery / recycling / charging station.
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