Daytime Running Lights - Toyota Nation Forum : Toyota Car and Truck Forums
1st Generation (2001-2007) Forum dedicated to the discussion of 1st generation Toyota Highlanders.

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#1 Old 11-29-2008, 07:08 AM
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Daytime Running Lights

Is it extremely difficult to disable DRL's on a 2004 Highlander?

I've been searching forums for weeks without a Highlander-specific answer.

It appears that many other Toyotas have an in-line resistor that can be disconnected but I cannot find anything similar to that under my hood.

Anyone know where or what to look for?
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#2 Old 12-01-2008, 10:49 AM
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If you don't like them that much, why not just remove the bulbs.
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#3 Old 12-01-2008, 01:16 PM
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Disable DRL lights

That would work but doing so would also eliminate the high-beam headlight as they share the same bulbs.
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#4 Old 12-01-2008, 04:18 PM
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Suggest a TN search on this subject as it has come up many times.

There may be a relay labeled DRL in one of the engine electrical boxes, try removing the relay.
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#5 Old 12-01-2008, 07:00 PM
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I've done extensive searching before resorting to posting but have consistently come up wanting for specifics on an 04 Highlander. I did find many posts for other Toyota models but the solutions do not apply to the wiring in a Highlander. There are several relays involved but removing any of them also disables other needed lighting functions. I do believe if I could figure out where the resistor is located I'd have a shot a devising a bypass solution???
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#6 Old 12-01-2008, 09:53 PM
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Your best bet is to get a wiring diagram.

Suggest your local library which may have Motor shop manuals, etc covering all makes of cars. They may have a internet subscription service for Alldata that offers wiring diagrams.
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#7 Old 12-01-2008, 10:19 PM
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If you're willing to pay for access you can try Toyota's Technical Information System link in the DIY sticky which may provide you with information to accomplish your modification. Can't guarantee you'll find what you need, but if you've exhausted all other options....

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#8 Old 12-01-2008, 10:55 PM
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Found this thread on the FJ Cruiser forum, (I know, it ain't a Highlander) it might give you more insight/ideas if you haven't looked there previously: http://www.fjcruiserforums.com/forum...drl-s-off.html
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#9 Old 12-02-2008, 09:42 AM
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Guess you have a different setup, my 2004 Highlander is a basic model and the DRLs are separate from the headlights.
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#10 Old 12-02-2008, 04:01 PM
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The 2001 Highlander owner manual indicates there is a fuse for the DRL. I would assume there would be one for 2004 Highlander as well. If so, wouldn't unplugging the fuse do the trick?

Last edited by toy_high; 12-02-2008 at 04:02 PM.
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#11 Old 12-02-2008, 07:06 PM
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The wiring diagram indicates a DRL fuse on 2004, try removing it.
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#12 Old 12-02-2008, 09:24 PM
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Thank you all for your suggestions. I followed the recommendation from TrailDust and purchased access to wiring diagrams from Toyota's Technical Information System. I cannot believe how different these DRL's are wired compared to other Toyota models. No inline resistor like other models just an intricate connectivity scheme that runs battery voltage through the two high beam bulbs "in series" for the 1/2 power daytime lighting output. The DRL circuitry applies a ground reference point to the high beam bulbs to enable them to operate as high beam headlights. Now I understand why pulling fuses and relays made other lighting functions inoperable.

WOW!
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#13 Old 12-02-2008, 09:33 PM
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This being the case, have you come up with a fix to disable the lights.
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#14 Old 12-02-2008, 09:39 PM
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I'll post it here with the supporting diagrams once I have it all defined
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#15 Old 12-06-2008, 10:10 AM
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Drl

Have an 05 Limited. I asked the tech about disabling the DRL's and he said it would require some rewiring an/or changing some bulkhead connector pin-outs. He would have done it for me, but I didn't think it was worth the aggravation, so I just let it go and am living with them. I have higher output 9005 bulbs for the highs, and did not want to shorten their life with DRL's, but it really has been no problem in 3+ years.
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