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  #11 (permalink)  
Old 01-26-2008, 02:36 PM
Pretty Darn Active Enthusiast
 
Real Name: Jimmy
Location: Southern New Mexico
Hybrids: 2007 Toyota Camry Hybrid
Posts: 483
Default Re: DRLs Stopped Working

I found the headlight Auto setting works best for me. Anytime I get out of the car I flip it Off then back to Auto. That turns the lights off immediately once the engine is off. This way If I get in the car at dusk or at night the lights come on automatically.

My guess it the headlamps would time out in the Auto setting once the engine was off. I really don't need the light delay.

I can usually see my DRLs when pulling up to a convenience store. I look for the lights reflecting in the glass windows.
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  #12 (permalink)  
Old 01-27-2008, 07:15 PM
Toyota & Mazda Enthusiast
 
Real Name: Martin
Hybrids: 2007 Toyota Camry Hybrid
Posts: 63
Default Re: DRLs Stopped Working

Electrick: Thanks for that info about the ECU parameters on my DRLs! The dealer changed the instrument lights setting (auto-dim off) way back in September. The DRLs were functioning OK after that... as I remember... until last week.

Yes... the HL combi-stalk switch is always turned to "AUTO." I rarely touch it except on foggy days.

Wait... I do remember "bumping" a parked car while parallel parking last week. I mean it was only a minor bump in the front that did no visual damage [I got a strong polycarbonate front plate cover]; I strongly doubt that could have dislodged a wiring harness.... Or??

.

2007 Toyota Camry Hybrid base Jasper Pearl -- I CANNOT seem to get that Average Mileage log to display here: 30.0 MPG as of 7/2008!!
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  #13 (permalink)  
Old 01-28-2008, 12:30 PM
mikieboyblue's Avatar
Ridiculously Active Enthusiast
 
Real Name: Michael
Location: Mid Hudson Valley, New York
Hybrids: TCH (black, NAV, sunroof, leather) - 03/30/07
Posts: 1,257
Default Re: DRLs Stopped Working

Are you sure there isn't a DRL fuse?? I could have sworn I saw one in the main fuse block in the engine compartment. Maybe it was a DRL relay? I'd check that out. If it is a the relay then have someone cycle between DRL off and on and see if there is any action in the relay. (If we can see or hear the action -- may be solid state.)
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  #14 (permalink)  
Old 01-28-2008, 01:56 PM
SPL SPL is offline
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Real Name: Stanley Lipshitz
Location: Waterloo, ON
Hybrids: 2007 Toyota Camry Hybrid
Posts: 843
Default Re: DRLs Stopped Working

According to the "Overall Electrical Wiring Diagram," the DRL "relay" is actually a solid-state, FET-type switch (and not an electro-mechanical relay). In DRL mode, it switches the high-beams on and off at a high rate; since they are "on" for much less than 100% of the time, this achieves the reduced brightness required for DRL purposes. In normal high-beam mode, the FET switch is "on" all the time, and full brightness is obtained. There is a 15-A fuse in series with each high-beam bulb, and no other relevant fuses. They are labelled H-LP (LH) and H-LP (RH).

The first thing I would ascertain is whether your high-beams work normally. If so, the two fuses and the FET switch are fine. The problem would then have to be in the FET driving circuitry — the so-called "Light Control Circuit." If the high-beams don't work normally, the problem could be both fuses (unlikely), the FET, or the driving circuitry.

Stan
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  #15 (permalink)  
Old 01-28-2008, 04:21 PM
Toyota & Mazda Enthusiast
 
Real Name: Martin
Hybrids: 2007 Toyota Camry Hybrid
Posts: 63
Default Re: DRLs Stopped Working

Stan (SPL)... Thanks. Yeah, there is no "DRL" labeled fuse at both boxes listed in the manual. [The dash fuse box is a pure joy to access!] Since the DRLs are part of the hi-beams, they are part of that protected circuit.

Ok... both hi-beams check out fine and operate normally -- indicator on dash is fine and both bulbs visually check out full on. The low and high beams switch on/off fine -- pass that test....

So... probably a fault in the "light control circuit"? Would a minor bumper smack or short from water cause a circuit fault? I won't touch anything... looks like dealer time.

.

2007 Toyota Camry Hybrid base Jasper Pearl -- I CANNOT seem to get that Average Mileage log to display here: 30.0 MPG as of 7/2008!!
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  #16 (permalink)  
Old 01-29-2008, 02:19 PM
SPL SPL is offline
Ridiculously Active Enthusiast
 
Real Name: Stanley Lipshitz
Location: Waterloo, ON
Hybrids: 2007 Toyota Camry Hybrid
Posts: 843
Default Re: DRLs Stopped Working

martinmzfan — Given your findings, I think that Electrick's suggestion is likely the answer: that the DRL function customization option on page LI-12 of the Repair Manual (attached) was inadvertently changed to "off" permanently by the dealer. It seems most likely to me to be a software rather than a hardware issue. Let us know the outcome. [Interestingly, this lighting customization option isn't listed in the so-called complete customization option list that I (and others) have posted here before — see the attached pages IN-41to44 from the Repair Manual.]

Stan
Attached Files
File Type: pdf LI-12to13_Light customization.pdf (17.2 KB, 22 views)
File Type: pdf IN-41to44_Customize.pdf (28.0 KB, 25 views)
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  #17 (permalink)  
Old 04-16-2008, 08:38 PM
Toyota & Mazda Enthusiast
 
Real Name: Martin
Hybrids: 2007 Toyota Camry Hybrid
Posts: 63
Default Re: DRLs Stopped Working

Thanks to everyone for their input! You guys rock! I finally found time to make it over to the dealer. Yes, indeed it turned out that the Hybrid Tech "inadvertently" programmed off the DRLs in a vain effort to disable the auto-dimming instrument lights feature. DRLs are back on AUTO and can be switched off manually at the stalk -- there was no failure anywhere;

Now if I can only get the dealer to see the flickering auto-dimming dash lights, I'd be in better shape. Ever go under an overpass on the freeway and watch your dashlights suddenly dim? [The dim control knob is set just under the full-bright click.] Well, that's my issue that led to this other issue caused by the tech. I'm thinking it's probably a bad light sensor on the dash. Back to the dealer.

.

2007 Toyota Camry Hybrid base Jasper Pearl -- I CANNOT seem to get that Average Mileage log to display here: 30.0 MPG as of 7/2008!!
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  #18 (permalink)  
Old 04-22-2008, 08:35 AM
Active Enthusiast
 
Real Name: Al
Location: Dunwoody GA
Hybrids: TCH-Mag Grey, Leather, no NAV
Posts: 105
Default Re: DRLs Stopped Working

Quote:
Originally Posted by martinmzfan View Post
Thanks to everyone for their input! You guys rock! I finally found time to make it over to the dealer. Yes, indeed it turned out that the Hybrid Tech "inadvertently" programmed off the DRLs in a vain effort to disable the auto-dimming instrument lights feature. DRLs are back on AUTO and can be switched off manually at the stalk -- there was no failure anywhere;

Now if I can only get the dealer to see the flickering auto-dimming dash lights, I'd be in better shape. Ever go under an overpass on the freeway and watch your dashlights suddenly dim? [The dim control knob is set just under the full-bright click.] Well, that's my issue that led to this other issue caused by the tech. I'm thinking it's probably a bad light sensor on the dash. Back to the dealer.
Your dashlights are dimming because your headlights are turning on automatically when you go through an underpass.
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  #19 (permalink)  
Old 04-22-2008, 10:17 AM
Driving in stealth mode
 
Real Name: Dan
Location: Far South Chicago Burbs
Hybrids: 2007 TCH Magnetic Gray -Nav- "Doc"
Posts: 411
Default Re: DRLs Stopped Working

Ding ding ding we have a winner. That's exactly it.
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  #20 (permalink)  
Old 04-22-2008, 10:44 AM
mikieboyblue's Avatar
Ridiculously Active Enthusiast
 
Real Name: Michael
Location: Mid Hudson Valley, New York
Hybrids: TCH (black, NAV, sunroof, leather) - 03/30/07
Posts: 1,257
Default Re: DRLs Stopped Working

Quote:
Originally Posted by martinmzfan View Post
Thanks to everyone for their input! You guys rock! I finally found time to make it over to the dealer. Yes, indeed it turned out that the Hybrid Tech "inadvertently" programmed off the DRLs in a vain effort to disable the auto-dimming instrument lights feature. DRLs are back on AUTO and can be switched off manually at the stalk -- there was no failure anywhere;

Now if I can only get the dealer to see the flickering auto-dimming dash lights, I'd be in better shape. Ever go under an overpass on the freeway and watch your dashlights suddenly dim? [The dim control knob is set just under the full-bright click.] Well, that's my issue that led to this other issue caused by the tech. I'm thinking it's probably a bad light sensor on the dash. Back to the dealer.
I get flickering lights around the radio. I can only see it at night and it is not due to an under/overpass. I have not bothered to report it yet because you have to see it at night and it is random.

You're situation is different and answered in the two posts above this one.
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