According to my owner's manual and my wiring diagrams, this year of Camry only had DRL's in Canada. But yes, the Canadian Camry had DRL and a DRL Control Relay. Not sure about a Lexus. But if you want to check...
The DRL relay for Canadian Camry models is located under the little square cover in your console, right below the parking brake handle. Pry it open with a small screwdriver. On USA and Japanese models, this is the automatic shoulder belt computer (see diagram).
I can tell you the color of the wires going into it:
Red (goes to 10A fuse in drivers kick panel, bottom left on forward panel)
Red/Blue (goes to instrument cluster)
Red/White (goes to integration relay)
Red/Green (without integration relay)
Light Green (goes to integration relay)
Green (without integration relay)
Red/White (goes to switch)
Red/Black (goes to switch)
Not sure if any of this will help, but it might help to determine if you have the DRL relay under that cover in your console. If it has this color of wires coming from it, AND you have a fuse in the lower left of the forward panel behind your left kick panel, then perhaps this is it. So if I wanted to disable my DRL's, I would simply remove the 10 amp fuse, or clip a wire.
Tell ya what: I'll TRADE you MY shoulder belt computer for YOUR DRL box! LOL (I'd rather have DRL's than automatic belts.)
Good luck. Let us know if you figure it out.