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Daytime Running Light Relay Circuit: Description

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

The main body ECU controls the DRL NO. 4 relay. The DRL NO. 4 relay connects the daytime running light relay and the headlight during operation. The daytime running light relay controls the illuminance of the headlight accordingly.

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