no one knows.it's a mystery!
It is under the dash. I believe I remember it to be the two plug module above the parking brake.
The DRL Module is located at the LH Rocker Panel left of the brake, under and just below the dash. The DRL Module and the DRL Relay are side-by-side.
The daytime running lights module on a 2000 Grand Marquis is located in the passenger side engine bay. It lays between the battery and the heater blower.
A ( Daytime Running Light ) module
A DRL module controls the daylight running lights found on many newer and Canadian cars.
Discovered the same problem in my Prix yesterday, something is affecting the lights sensor cause you can still turn them on manually, I'm going to check the DRL sensor wiring for shorts or something, will post again if I figure it out.
The drl module on chevy epica 2004 is back to the data link connector
On my 1999 Buick Regal the DRL module is located on the outside foot well behind the parking brake pedal under the carpet. My DRL has gone bad and is making the car quit.
The DRL control module is located under the steering column on the left hand side!
If you mean the sensor it is on top of the dash in the middle closest to the windshield, it's a little globe looking thing.
You probably need a new DRL module and/or DRL relay.In some instances the module is fixible.
DRL modules are like fuses...they are inexpensive, & usually replaced, not repaired.