2008 Daytime running lights questions - Page 2 - Toyota RAV4 Forums
4.3 Exterior Tires, Wheels, Lights, Spoilers, Flares, Bars, Tow Hitches, etc.

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#11 (permalink) Old 12-26-2012, 07:55 AM
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We've had DRL's here for a long time as they have been mandatory for something like 20 years! They wire the bulbs in series for two reasons; first reason is not to blind incoming drivers and second to make the bulbs last a little longer as they operate at half the normal voltage. Some modern vehicles use LED DRL's, a great idea as they draw very little current and last a life time!

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#12 (permalink) Old 12-26-2012, 12:02 PM
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I always understood the DRLs ran at reduced voltage but didn't realize Toyota wired the bulbs in series to achieve this. I don't think every manufacturer does it that way. In fact, I had DRLs on a previous Mustang and I'm pretty sure they worked independently as I replaced bulbs several times without having to troubleshoot any loss of DRL functionality when I lost a high beam.

Anyway now I know, if the Rav4 DRLs stop working check the high beams to see if ONE of them is burned out in normal operation.

BTW I'm using a set of Toshiba HIR bulbs that lasted over 5 years. I loved them and hope the Philips HIRs are as good. They're certainly cheaper now, I just bought 2 of the HIR1's from Amazon for under $18 ea.
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#13 (permalink) Old 10-01-2013, 08:37 PM
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Rick: I've installed HIDs on my low beams ('07 Limited, V6,2WD) and they work great. Is there a way to get around the Toyota hi beam wiring so I could install HIDs on the high beams also?
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#14 (permalink) Old 10-01-2013, 09:10 PM
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Quote:
Originally Posted by mpatrickjr View Post
Rick: I've installed HIDs on my low beams ('07 Limited, V6,2WD) and they work great. Is there a way to get around the Toyota hi beam wiring so I could install HIDs on the high beams also?
All you would need to do is get the proper relay and that would remove the drl function, then you could install (i don't recommend it) HID bulbs on your high beams.

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Front DRL's, LED Bumper Park/Brake lights,
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#15 (permalink) Old 10-02-2013, 03:51 PM
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Originally Posted by mpatrickjr View Post
Rick: I've installed HIDs on my low beams ('07 Limited, V6,2WD) and they work great. Is there a way to get around the Toyota hi beam wiring so I could install HIDs on the high beams also?
The information for the relay swap can be found in post #22 (and the few following posts) of this thread.


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#16 (permalink) Old 10-02-2013, 11:35 PM
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the same happened to me. I replaced the high's with the stock bulbs that I saved when I upgraded to Silverstar Ultras and the DLR's came on again.

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