DRL Relay Circuit: Description
WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
The multiplex network body ECU controls the DIMMER, DRL No. 2 and DRL No. 4 relays.
The DIM, DRL No. 2 and DRL No. 4 relays installed in the power distributor.