DRLs Stopped Working

[Manhattan]

Full disclosure: I haven't checked any fuses. I haven't looked in the owners manual for answers...

I noticed this week, my DRLs are off. I haven't done anything - that I know of - to turn them off.

I went through a full diagnostic process: behind shiny car at red light, turned headlight switch to Auto, Off, On - no change to DRLs. Then escalated the effort: Repeated the above with fog/driving lights on. Traffic light turned green... shiny car pulled away - but no change to DRLs

Assuming I'd like my DRLs back (more curious why they left me)... where would a next-level diagnostic start?

Thanks!

 

[AimCOtaco]

If they are burned out then your high beam indicator should light when you're driving around. (my '99 is that way at least)

 

[Manhattan]

The blue highbeam light is normal - only on when lights are on and highbeams selected. Hmmm

 

[jemsec]

Most put in switches to turn them off. Now you don't have to.

 

[hankinid]

I disconnected mine prior to installing HID's in the low beam holes, but I still use low beams while driving on 2-lane highways.

When the high beams are in the DRL mode, they're connected in series so they get half the voltage, and the voltage is lowered further by a ceramic resistor located in a perforated metal box. It's located to the rear of the PS reservoir and 2 bolts hold it to the inner fender. It has a short 2-wire harness and a connector.

Steve