Headlights wont turn off

It sounds like a fuse problem. You don't state what make of car but some have a fuse for each headlamp and tailight located in the box under the hood. Good luck.

there is a short between the headlights and whatever is on 16 fuse

Headlight switch probably the problem. One circuit is shutting off when the other turns on. If it was a fuse or relay, it would just turn off...

GOOD ADVISE--I ALSO LEARNED THAT THERE MAY BE FUSES IN UNDER THE HOOD ALSO. FOUND OUT TODAY THAT IF THE DOME LIGHT DON'T WORK THEN IT'S FUSE COULD BE BLOWN AND HINDER THE CIRCUIT TOO. I'M NOT GOOD ON VOLTAGE READING , BUT DO HAVE A TEST LIGHT. IF NO FIRE AT THE COMMON TAIL LIGT-DASH LIGHT FUSE , THEN THAT MIGHT NARROW IT DOWN. I HAD THE SAME TROUBLE IN MY 1990 FORD XLT LARIAT AND WAS BLOWING THE TAILLIGHT FUSE. IT WAS A SHORT IN THE EXTERNAL TRAILER KIT HARNESS WHICH CAUSED FUSES TO BLOW REGUARLY. WHERE IS RELAY FOR TAILIGHTS AND OTHER FUSES UNDER THE HOOD??

you have a short circuit somewhere that is causing the fuse to blow,it is most likely the headlights unless you have been messing with the dashlights,you will need to check all the headlight wiring to see if you can find the fault.......hope this helps......cheers

First thing to do, is checking your fuse, then if fuse are ok, then check the relay, located under the hood by swtiching around with another relay of correct relay specs. If it works, then replace your relay, if not, check that relay if it works with another relay spot such as windows, and test the windows. If it is not the relay, then it could be your headlight lamps that is bad, check your rear tail lights to see if it comes on when you turn your headlights on, If the tail lights come on, then it is a good possibilty with the headlamps since the sorento are known to blow through head light bulb light crazy. I mean crazy. So maybe replace one side see if that would work, to really know for sure it's a headlight issue.

Is this both the high beams and low beams that do not work ?

If you checked all 3 fuses with a meter ( with the headlamp in Low position for both low beam fuses or in high for the high beam fuse ), the next items to test are the MFS ( MultiFunction Switch ) and the main headlamp switch ( test not look at it ).

The main headlamp test chart


The test chart for the MFS

need to replace headlamp switch

you have a badb headlight switch. it controls the head lights and dash lights

I just had the same issues. No headlights, interior lights, power door locks, radio controls on steering wheel, or dash lights. Pulled every fuse in cab and under hood, not a one was bad. I disconnected the battery terminals for a few minutes. When I reconnected them every thing was working.