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Car Forum / Honda Cars / February 2005Honda Accord 2004 lights dimming
I have a honda accord 2004 and when the air conditioner is on the lights dim for a brief sec.about every 12 to 15 sec.when the fan starts up it even does this when the motor is cold . I have taken this to the dealer and they say it is a normal thing for this car. Does anyone else have this problem? I just noticed this last night as well. I have never experienced this before, and I have done a good bit of night driving. I even turn off the system and it still does it. It's not a regular occurrence either. Do you have foglights on yours? Must be a voodoo thing going on.... > I have a honda accord 2004 and when the air conditioner is on the lights > dim for a brief sec.about every 12 to 15 sec.when the fan starts up it > even does this when the motor is cold . I have taken this to the dealer > and they say it is a normal thing for this car. Does anyone else have this > problem? You aren't alone. I've experienced this with my 2004 Accord as well. The dealer told me the same story, that is was normal, but didn't say why it was. I haven't noticed this in a while but then again I don't do as much night driving as I did a couple months ago. I can't remember if the a/c had to be on or if it did it regardless. Oh, and no, I do not have fog lights. Richard >I just noticed this last night as well. I have never experienced this > before, and I have done a good bit of night driving. I even turn off the [quoted text clipped - 10 lines] >> this >> problem? Yes i do have the fog lights on my accord too but it even does it when they are off > I have a honda accord 2004 and when the air conditioner is on the lights > dim for a brief sec.about every 12 to 15 sec.when the fan starts up it > even does this when the motor is cold . I have taken this to the dealer > and they say it is a normal thing for this car. Does anyone else have this > problem? This would be consistent with an extra electrical drain on the system, much like when you turn on a room A/C, lights on the same circuit dim. With a car, there is the added factor of the extra mechanical drain caused by the A/C compressor kicking in that slows the engine slightly, thereby reducing output from the alternator. If you listen to the engine carefully, you can actually hear it. Electric motors have a very heavy initial drain when they first start up, which is why circuits with large motors on them require delay fuses to prevent them from blowing prematurely. sounds normal. >I have a honda accord 2004 and when the air conditioner is on the lights > dim for a brief sec.about every 12 to 15 sec.when the fan starts up it > even does this when the motor is cold . I have taken this to the dealer > and they say it is a normal thing for this car. Does anyone else have this > problem? In article <595abc8348a77c431570fadacc82a186 @localhost.talkaboutautos.com>, bmeade@nbnet.nb.ca says... > I have a honda accord 2004 and when the air conditioner is on the lights > dim for a brief sec.about every 12 to 15 sec.when the fan starts up it > even does this when the motor is cold . I have taken this to the dealer > and they say it is a normal thing for this car. Does anyone else have this > problem? My '03 Accord does the same thing; I got the same line as you from my dealer. It's highly annoying. Maybe I'll look into adding some of those 1 Farad capacitors normally used for car amplifiers to the headlights... --Gene I get the same problem in my 02 SE, 03 mazda tribute, and 03 miata. Just electrical load on the system. Normal. I got it in my other fords and mercuries before also. > In article <595abc8348a77c431570fadacc82a186 > @localhost.talkaboutautos.com>, bmeade@nbnet.nb.ca says... [quoted text clipped - 11 lines] > > --Gene Here's the answer from Honda, not sure why the dealer won't provide this to you... Headlights & Dash Lights Dim With Electrical Load NOTE: This article applies to all Honda models except Passport. Soon after the change from daylight savings time to standard time (the last Sunday in October), Tech Line gets numerous calls about flickering or dimming headlights and/or dash lights when the brakes or turn signals are used. This flickering or dimming happens when the battery is supplying most of the current for the electrical load instead of the alternator (something a customer is more likely to notice when their headlights are turned on). Since the early 90s, Honda vehicles have come with an electrical load detector (ELD) unit in the under-hood fuse/relay box. This unit allows the ECM/PCM to regulate the alternator (switch it between high output and low output) to provide the best combination of fuel economy and electrical system operation. The ELD sends a signal to the ECM/PCM thats proportional to the electrical demand. The ECM/PCM switches the alternator between high output and low output depending on several factors, which include electrical demand, battery charge level, and the driving cycle. When the alternator is in low output, the engine load is reduced and fuel economy improves. If your customer complains about this flickering or dimming, tell them about the ELD unit and how it works. Unless the engine wont crank, or the vehicle has other symptoms of a weak battery, chances are the flickering or dimming isnt an electrical problem. > I have a honda accord 2004 and when the air conditioner is on the lights > dim for a brief sec.about every 12 to 15 sec.when the fan starts up it > even does this when the motor is cold . I have taken this to the dealer > and they say it is a normal thing for this car. Does anyone else have this > problem? -- Tp, -------- __o ----- -\<. -------- __o --- ( )/ ( ) ---- -\<. -------------------- ( )/ ( ) ----------------------------------------- No Lawsuit Ever Fixed A Moron... |
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