Hyundai Accent: Body Electrical System / Electro Chromic Inside Rear View Mirror

Hyundai Accent (HC) (2017 - 2022) Service Manual / Body Electrical System / Electro Chromic Inside Rear View Mirror

Components and Components Location

- Components

Description and Operation

- Description The ECM (Electro Chromatic inside rear view Mirror) is for dimming the reflecting light from a vehicle behind at night, Preventing glare from the light. The forward facing sensor detects brightness of the surroundings, while the rearward looking sensor detects the strength of the reflecting light and adjusts the reflexibility of the mirror in the range of 7~85%. But, when the reverse gear is engaged, it stops functioning.

1.The forward facing sensor sees if the brightness of the surroundings is low enough for the mirror to operate its function.

2.The rearward looking sensor detects glaring of the reflecting light from a vehicle behind.

3.The ECM is darkened to the level as determined by the rearward looking sensor. When the glaring is no longer detected, the mirror stops functioning.1. LED indicator2. ON/OFF Switch3. Rearward looking sensor4. Forward looking sensor

- Automatic-dimming Function To protect your vision during nighttime driving, your mirror will automatically dim upon detecting glare from the vehicles traveling behind you. The auto-dimming function can be controlled by the Dimming ON/OFF Button :

1.Pressing and holding the Feature Control button for more than 3 but less than 6 seconds turns the auto-dimming function OFF which is indicated by the green Status Indicator LED turning off.

2.Pressing and holding the Feature Control button again for more than 3 but less than 6 seconds turns the auto-dimming function ON which is indicated by the green Status Indicator LED turning on.

The mirror defaults to the "ON" position each time the vehicle is started.

Repair procedures

- Inspection Check it by the procedure below to see if the function of the ECM is normal.

1.Turn the ignition key to the "ON" position.

2.Cover the front sensor to stop functioning.

3.Shine a light at the rear sensor.

4.The ECM should be darkened as soon as the rear sensor detects the light.

If this test is performed in daytime, the ECM may be darkened as soon as the front sensor is covered.

5.When the reverse gear is engaged, the ECM should not be darkened.

6.When heading lights to both the front and rear sensors, the ECM should not be darkened.

- Removal

1.Disconnect the negative (-) battery terminal.

2.Remove the mirror wiring cover (A) and disconnect the connector (B).

3.Remove the mounting screw (A).

4.Slide the inside rear view mirror rearward to remove the inside rear view mirror assembly (B).

Take care not to damage the mounting bracket during removal.

- Installation

1.Install the mirror assembly.

2.Install the mirror wiring cover and connector.

– Make sure the connector is plugged in properly.

Front Wiper Motor

Lighting System

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Engine Control Module (ECM)

- ECM Terminal and Input/Output signal [M/T] ECM Terminal Function (M/T) Connector [A] Pin NoDescription 1- 2- 3Injector (Cylinder #1-1) [Low] control output 4Injector (Cylinder #1-2) [Low] control output 5- 6- 7- 8- 9- 10- 11Electric EGR Control Valve gorund 12Engine Coolant Temperature Sensor (ECTS) #2 ground 13Ignition Coil (Cylinder #1) control output 14- 15Ignition Coil (Cylinder #4) control output 16Thermal Management Module (TMM) Motor ground 17- 18Engine Cool

Hyundai Accent (HC) (2017 - 2022) Service Manual: Coolant

- Replacement and Air Bleeding • Never remove the radiator cap when the engine is hot. Serious scalding could be caused by hot fluid under high pressure escaping from the radiator. • When pouring engine coolant, be sure to shut the relay box lid and not to let coolant spill on the electrical parts or the paint.

Components and Components Location
Description and Operation
Repair procedures