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Toyota Prius Electrical and Lighting Questions

87 messages,  Last post on Dec 04, 2009 at 3:40 PM

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#15 of 87 Re: Retrofitting the HID lights?? [birger] by railroadjames Feb 28, 2007 (11:06 am)
Replying to: birger (Jan 31, 2007 7:26 am) Just passing along some info about headlight (bulbs)...I recently noticed a driver's side headlight out on my 3 yr old '04 Prius. When I went to purchase a replacement (BULB) I had several selections to pick from (cost ranging from $8.00- $22.00). I selected a lower priced bulb and went home to my garage and attempted to change the bulb myself(as I had done so many times B/4 in many of my other past cars). Unfortunitly what a task I had B/4 me. Upon opening the hood I realized the opening behind the headlite assembly is next to impossible. I removed the cover to a module just behind the headlite and tried again to get to the bulb unsuccessfully. Then I called "TOYOTA" for help at the dealership. They explained I had to turn a rubber cover & pull out that cover and release a wire clip and then turn bulb to remove. I tried and tried to no avail and finally took it to the dealer who(thank God) let a mechanic show me how it's done. It still took 15-20 minutes to get it done. While he did the miracle job he pointed out that some of the "Celica" modules are even harder to replace requiring that the bumper has to be dismounted to replace a bulb. I guess I'm lucky by comparison. Anyway...Thats that! Live & Learn. I hope no one has to deal with a bad bulb. As for Toyota...Does it have to be so darn hard to do what use to be a snap.
#16 of 87 Did not work out for me by ck90211 Mar 16, 2007 (4:15 pm)
I tried to install a HID kit (light, ballast, transformer, etc.) into a 2007 Prius, and for some reason could not get it to work. That's after testing all electrical connections with a voltmeter and things. So I for one would raise a white flag on such project. The standard lights are not too bad, so you won't gain much visibility using HID, especially if you get the hot (blue or purple) ones.
#17 of 87 HID Retrofit! by 3screwsloose Apr 08, 2007 (8:23 pm)
There is more to it than just the headlight ass'y. My '07 pkg #6 has 'em. There is a level sensor on the rear axle. when the car is loaded down the front end rises. This may blind oncoming drivers if not compensated. Also, the quality of the reflector and lens can make a significant difference in the performance. "Non-factory" systems may not do anything more than throw a bright light - not a "true" HID system.
#18 of 87 Prius OEM HID retrofit by birger Apr 09, 2007 (2:36 am)
Hi again,   and thanks to the people who have answered the original post. Meanwhile our new Prius:     has been ordered, and will be here in a couple of weeks   However, it seems to me that some of you have not really understood what our intentions regarding HID were. What we were thinking of was - like we did on a 2000 Mercedes ML - to purchase the complete ORIGINAL Toyota HID headlight units and replace the ones on the vehicle.   On the Mercedes this worked out perfectly, even without the auto leveling sensor - we drove that vehicle for some 6 years without getting flashed by oncoming drivers.   The question was whether this would pose problems connection- or software-wise - not whether one of the various, very dubious aftermarket HID bulb adaptions would be possible.   As the delivery date is now getting very close, we'll probably for the time being make do with a set of optimized H4 headlight bulbs from a recognized manufacturer - but it would be nice to know if anyone had done the OEM swap.   TIA, Birger Replies to this message: pathstar1 (Apr 09, 2007 7:38 am)
#19 of 87 Going to rename this one by pf_flyer HOST Apr 09, 2007 (3:22 am)
Since we don't have a discussion for Prius electrical/lighting issues, I'll rename this one to use as the starting point.
#20 of 87 Re: Prius OEM HID retrofit [birger] by pathstar1 Apr 09, 2007 (7:38 am)
Replying to: birger (Apr 09, 2007 2:36 am) The HID systems draw about 1/2 the power of the halogens, so I wouldn't expect any power problems swapping in the stock HID system. You do need the level sensor to be legal (though you'd have to check on this in your country). With the stock system, I don't think it would be easy to operate it without the level sensor. It would be expensive to purchase all those parts. Perhaps finding a wreck and getting the parts off it would help. I'd estimate $2500 for each side for the headlamp assys. and ballasts. Wires would have to be added - Toyota doesn't make just one wiring harness for all the Prius. There may be software issues on the CAN bus, as I believe the HID control/ballast units "talk" to the rest of the car. So you'd need either a good Toyota tech. to do it for you or the tech manual including schematics to do it yourself.
#21 of 87 AIR CONDITIONING ISSUES - 05 PRIUS by kadensgram Apr 12, 2007 (11:28 am)
I BOUGHT MY PRIUS NEW 6-05 - PERIODICALY, HAS NOW BECOME A MAJOR ISSUE WITH THE AIR CONDITIONER THE FAN TURNS OFF. AIR CONDITIONER IS STILL ON BUT NO BLOWING COLD AIR. TOOK TO DEALER THEY TOOK IT COMPLETELY APART FOUND NO LOOSE WIRES OR PARTS. SAID THEY COULDN'T FIX WHAT THEY COULDN'T FIND BROKE, THE AIR THEN WORKED FOR 4 WEEKS. I BOUGHT THE CAR TO GO BACK AND FORTH FROM CALIFORNIA TO TRI-STATE ARIZONA. PERHAPS SOMEONE ELSE HAS THIS HAPPEN, ITS ABOUT TO GET UGLY AT THE DEALER. THANKS G.G. Replies to this message: anna_g87 (Apr 25, 2007 5:55 pm) kadensgram (Apr 26, 2007 7:39 pm)
#22 of 87 No HID retrofit then by birger Apr 18, 2007 (1:05 am)
Hi,   Seeing that retrofitting OEM HID's to our new Prius will not only be quite expensive, but could also be downright impossible due to the electronics involved, we've decided on the second best solution:     When we get it on Friday, a set of Philips X-treme Power H4 bulbs will be fitted - they're supposed to be 80% brighter than the stock H4 bulbs, yet still legal.   Birger
#23 of 87 New Prius; Dead Battery by freerangemike Apr 20, 2007 (11:33 am)
I had to jump my wife's 2007 Prius this morning. The car has about 400 miles on it, is 1 month old, and was driven yesterday. The car was completely dead. Unfortunately, I was not there when she turned the car off and exited yesterday. Nor was I there when she got to the car this morning. Here is what she reports: 1. She parked, hit the P button and the Power button. She unplugged her iPod from the power adapter but left the adapter itself in the 12V outlet. (Simple adaptor with no apparant capacitors or power draw.) 2. She exited the car, and pushed the exterior lock button on the door. Her key was not left in the car, so it could not have been left inadvertantly running all night. 3. When she got to the car this morning, about 16 hours later, the car was unlocked. No interior lights came on. Nothing happened when she hit the power button. She was unable to start the car using the manual key. 4. There was no visible damage to the car (other than below). Her iPod was still in the center console. 5. Last week, she was hit on the driver's side by a guy turning left from a side street. We are still awaiting the insurance resolution to get the damage repaired.   My only theories here are: 1. Mechanical failure within electrical system: I haven't seen any other reports of this problem on Priuses, except when they have been left idle for a couple weeks. 2. The Alarm was going off all night, unbeknownst to us. 3. The damage to the door caused some short circuit which is draining the battery, perhaps by repeatedly locking and unlocking the door.   Any ideas? Replies to this message: carlstraub (Apr 20, 2007 2:39 pm) pathstar1 (Apr 21, 2007 9:13 am) stevegold (Apr 21, 2007 9:37 am)
#24 of 87 Re: New Prius; Dead Battery [freerangemike] by carlstraub Apr 20, 2007 (2:39 pm)
Replying to: freerangemike (Apr 20, 2007 11:33 am) Hi, Happened to me last week. When I closed windows for the evening I'm sure I did not push the PWR button the last time to turn off the system. The "smartkey" outsmarted me. In our previous Prius we had to put fob in slot. BTW you can connect a battery charger to the spots. Mine was Ok in 15 minutes. Of course your damage may be the cause. Carl

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