04 optima my 04 optima has a problem with its headlight switch. The parking lights come on when switched, but headlights will not.....mabe switch is bad?...no blown fuse

BCM see other post on it and the clock spring.

short some where in wires or mabe water in connector

Probably a bad headlight switch. It controls the park lights, if it won't turn them off, you should try a new headlight switch.

HEADLIGHTS NOT WORKING

It can be faulty headlight switch or issue with its wiring. Or its faulty head light fuse.

==========

To troubleshoot the issue i suggest you few help links with appropriate solution. So you can follow the test and confirm what exact problem is there in your case of headlights not working:-----

Click the link below: -----

All headlights not working?

http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

----------

• Working of Headlight switch?
------------
• Both headlight bulbs blow together?

------------
• Car headlight bulbs don't last long?

---------------

2007 Dodge Caliber: Low Beam Headlight Not working

http://technoanswers.blogspot.in/2012/06/2007-dodge-caliber-low-beam-headlight.html

----------

2003 Toyota Camry: Headlights Work Intermittently?

http://technoanswers.blogspot.in/2012/04/2003-toyota-camry-headlights-work.html

----------

Chevy Tahoe: Low Beam Lamps are not working?

http://technoanswers.blogspot.in/2012/04/chevy-tahoe-low-beam-lamps-are-not.html

----------

2001 Chevrolet Tahoe: Headlights not coming ON?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-headlights-not.html

--------

2004 Dodge Ram: High Beam Light is DIM?

http://technoanswers.blogspot.in/2012/04/2004-dodge-ram-high-beam-light-is-dim.html

----------

2001 Chevrolet Tahoe: Both Low Beam Lamps Not Working?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-both-low-beam.html

------------

Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

---------
How to Replace a Headlight

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

------------
How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

-----------
How to Replace a Headlight Switch

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

----------
How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

-----------

Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

----------

Headlight Assembly Removal On Honda Accord

http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html

---------------

Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html

-----------

How to Replace a Headlight Door

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

----------

How to replace HID headlight bulbs for lexus 400h?

http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

----------------

These will help.

Thanks.

On some cases there are few hidden clips holding the assembly from under hood,that has to be released to remove headlight .

There are few troubleshooting help links showing how to replace car headlights,i suggest you to refer the links to solve these issue.

--------
Click the link below:------
How to Replace a Headlight http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

------------
How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

-----------
How to Replace a Headlight Switch http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

----------
How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

-----------
Low beam headlights Modification? http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

----------
Headlight Assembly Removal On Honda Accord http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html --------------- Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html-----------
How to Replace a Headlight Door http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

---------
All headlights not working? http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

----------
How to replace HID headlight bulbs for lexus 400h? http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

----------
• Working of Headlight switch?
------------
• Both headlight bulbs blow together?
------------
• Car headlight bulbs don't last long?


----------------
These will help.
Thanks.

These trucks are known for bad multifuction switches.
the switch that i talk of is the signal switch , the handle is the switch, it bolts to side of steering column . this switch controls the signals and the headlights and high /low beams. the other thing is the headlight switch connector, the connector some times goes bad and starts to melt or just comes out of the connector. you will need to remove the cover to steering column, the screws are located under the bottom cover in holes. remove cover and check connector and then test for power if you have power going into switch but not coming out then switch is bad.

the last thing is to make sure the bulbs are good , make sure the headlight bulbs are good , and also the driving light bulbs, test for power at the connectors to those lights to.
You will need to do a little testing to find the problem.

No. Dash lights being out could be a bad headlight switch, since the dash lights are routed through the headlight switch, not the dimmer switch. Park and tail lights also controlled by the headlight switch.

Hi,
Likely the Headlights work through the DRL switch, too. Replace the switch (get a used one from a used parts/salvage/wrecking yard) or from a dealer...might call an auto parts store, too.

GL,
Td

Sounds like either your wiring from the Light switch is bad or the Light switch itself is bad. Check with your Owners manual to see if the "Parking lights" have a separate fuse.

Your tail and License plate lights would light with either the Headlights or the "Parking" light selected at the switch as would the front parking lights. If all lights except the headlights are out, your problem is closer to the light switch than at the mounting points of each Parking light or License plate light.

This is one case where you will not know if a dead wire off of the switch is dead because of a bad switch or a bad wire. You would have to detach the harness at the switch, test the wire bundle or jump the switch with power to see how it distributes power through the Harness. It will take a lot of time to rule out the switch. It may be cheaper to replace the switch and then work from there.

You say that the headlights work. The parking lights don't. My question is...are the parking lights working properly when the headlights are on? If they are working in conjunction with the headlights, but won't work independently, then the problem might lie in the switch. Hope this helped and best wishes.