Fog/Driving Lamp: Description and Operation

FOG LIGHT




GENERAL DESCRIPTION CONCERNING THE FOG LIGHT
The mentioned ECUs affect the functions and control of the fog lights and fog light indicator light.




Fog light and fog light indicator light
If the ETAS-ECU sends a fog light "ON" request signal to the front-ECU after the low-beam headlights are on, the fog light relay is turned on, allowing the fog lights and the fog light indicator light to be illuminated. If the low-beam headlights is turned off, the fog lights will also be turn off automatically. Therefore, if the headlights are turned on at next opportunity the fog lights do not illuminate.

If the high-beam headlights is turned on while the fog lights are on, the fog lights will be turned off. Then, if you switch the headlights from the high-beam to the low-beam, the fog lights will be turned on again.

NOTE: This description covers the fog lights only. In actual driving, the fog lights may be turned off due to the headlight automatic shut-down function.