fishhead41h
Newly Enlightened
- Joined
- Apr 8, 2007
- Messages
- 19
Anybody know how to turn off the daytime running lights on a 2010 honda crv?? Just ordered a set of Phillips Xtreme's and would like to make them last longer. Thanks John
Are you willing to forgo the added safety of accident avoidance to extend a simple bulbs life? Our Highlander uses its highbeams as DRL and we are still on factory installed bulbs at 45,000 miles.
The leftmost position turns on the lights when the ignition is on. The center position should be off, but the #*$&#$#@)#& morons programmed it such that the DRL's are still turned on in the off position, unless the parking brake is depressed.
Anybody know how to turn off the daytime running lights on a 2010 honda crv??
In the United States, they are not a required safety item, so if they are unwilling because they're "required by law", they are wrong. Granted, they have the right to refuse service to anyone, but it probably won't be a problem anyway -- it's quick money for them. Hopefully, the fuse trick works, so you can avoid the hassle in the first place.If it's computer controlled the dealership should be able to disable them, if they are willing.
It appears that your DRLs work exactly as intended.
Exactly as intended by morons who believe that the end users should be told what to do by big brother.
I'm curious as to how much having a DRL on vs off impacts bulb life. Are there any studies shown on it?
There are two ways to look at that. One, is that according to some sources, bulb life is exponential to the power of -13 with voltage change, so if the rated life of the bulb is 350hrs at 13.2V, but it's run at 60% power (or 7.9V), then that bulb would have a runtime of 31.6 years (276,934.44hrs -- surely that formula has some bounds on it, or my calculations are wrong).
On the other hand, if the temperature doesn't get high enough, the halogen cycle will not complete, which shortens the bulb life.
You're quite correct on all of the above. Yes, the -13 exponent does give extraordinarily long lifespans, and electrically they're accurate. But you have to read such a result not as "32 years" but as "electrical factors aren't going to determine the bulb life". Vibration-induced failure will kill it long before then in automotive service. Also correct that the halogen cycle doesn't happen (or doesn't happen efficiently) when bulb wall temperature is insufficient. This greatly shortens the filament lifespan because filament tungsten boils off and isn't redeposited, so eventually a thin spot will "wear through" and the filament will fail, but in the meantime the bulb wall will progressively opacify, so even if the filament lights up, its image is defocused and its light is diffused and partially occluded, thus reducing the power and focus of the beam. Eventually, with several hours of runtime at full rated voltage, the bulb wall will clean up and the filament will be renewed by the halogen cycle, but few of us get the opportunity to use our high beams for hours at a time. The smaller the bulb envelope, the lower the critical voltage below which the halogen cycle will not occur. So for example an H1 with tiny envelope will tolerate extensive low-voltage operation and show no bulb staining, while a 9004 or something like it won't.
So, if the tips of my 9005 capsules look brown, this is related to deposits of sublimated tungsten resulting from too little heat generated while run as a DRL?