Prius experts, please lend me your brains! Help needed!

1. You may have a partial contact problem with the headlight circuitry. Have that checked.

2. Temperature increases, and sloppy terrains affects HV battery performance.
It appears to me the battery might be going weak already. Is this the first time you've being experiencing this, or ? If its your first, your battery might be gradually having its way out.

Do you notice the HV fans coming on more often, and does the ICE cones on too?

Check the fans and make sure, it vents at the rear isn't blocked or covered with god hair, or something?


Dxta

 

MPG is stinky in winter...the good news is I think the cold helps the battery live longer. Our car has not had the head light prob because we have the cheaper regular headlamps (not HID).

 

GENTLEMAN, LEND ME YOUR EARS! .... sorry had to do it.

 

I had a 2008 and it had the HID headlights. The light going out is a sign the bulb is going bad. HID lights are more like a florescent light in the fact they have no filament. There is a ballast located in the bottom of the headlight assembly that fires the HID bulb and if the headlight gets water in it it shorts out the ballast. I replaced several light bulbs and one ballast. After you did a few you are a pro. If you have to remove the headlight assembly like I did it becomes a quick job also but not the first time like anything else being cautious you don't break anything.

We have been below zero here lately and with cold and snow your gas mileage is normal, your numbers are similar to what I got when it was really cold. It would be a different story if they stayed there when the temperatures rise.

Your display may be a because of cold weather also. If you ever used a tablet or cold cell phone the screens don't work as well in cold weather either. Again I would wait until the temperatures moderate and not get too excited until then.

Make sure you keep your tires pumped up especially in winter. Good luck.

HID headlights were my #1 complaint about my 2008 Prius.

 

The originals are very expensive and there should be some good knockoffs out there by now. I just go online like ebay or Amazon and take a chance. The knockoffs I bought worked as long as my originals. The dealer replaced mine under warranty the first time before the warranty expired at 36,000 miles after that I was on my own. I don't remember where I bought them.

 

1. You may have a partial contact problem with the headlight circuitry. Have that checked.

2. Temperature increases, and sloppy terrains affects HV battery performance.
It appears to me the battery might be going weak already. Is this the first time you've being experiencing this, or ? If its your first, your battery might be gradually having its way out.

Do you notice the HV fans coming on more often, and does the ICE cones on too?

Check the fans and make sure, it vents at the rear isn't blocked or covered with god hair, or something?

It isn't normal for the ICE to be running all the time. This tells me your HV battery might be weak, and the ICE keeps running, to charge it all the time.

In some other instances, if the HV blower fan is clogged with dirt, and so on, it would be difficult for the HV battery to be properly cooled down.








In this third picture, the HV blower fan is located to the right of the HV battery as you can see. Where the black plastic tubing attaches to it on the right.

Remove the fan, and inspect it.

That's the likely reason the MPG is somehow poor, because the ICE keeps running frequently.

Do you have some lights on the dash,or on the MFD?

Possible you get it scanned too?

 

This LED conversion thread could be of interest: HID to LED conversion | PriusChat

If you want OEM or affordable replacements (priced from high to low, quality may follow) :

Hid Bulb - Toyota (90981-20029) | Camelback Toyota (OEM at $110 per each plus S&H)

2007 TOYOTA PRIUS 1.5L L4 ELECTRIC/GAS Headlamp Bulb | RockAuto (D4R HID at the bottom, $60+ per each plus S&H)

2X HID XENON REPLACE LIGHT BULBS D1S D1R D1C D2S D2R D2C D3S D3R D3C D4S D4R D4C | eBay (from $12 per pair, free shipping.. even less if shipped from China)

and of course https://www.amazon.com/s/ref=sr_nr_n_3?fst=asff&rh=n:15730151,k:d4r

OEM may use D4R bulbs in the 4300 Kelvin range, so look for 4300K when shopping, comparing or reading reviews.

 

Check YouTube and see

 

The ICE will run all the time in low ambient temperatures because it will not stay warmed up long when not running. I don't think it's the HV battery. Your HV battery would set a code if it were weak.


iPhone ?

 

Have replaced the rear bumper twice the front is wicked easy
Which bumper?

 

Get a pair of HID bulbs. I don't like the Chinese ones, I prefer like Advance or Fisher bulbs (Sylvania or Osram). Then I don't have to worry about quality. I believe they are around $100 each but could be had cheaper by searching the part number on ebay or amazon. Just make sure you're getting the actual brand you want and not one that's "just like" OEM. Avoid anything not shipped from USA.


iPhone ?

 

The front is pretty easy. Top screws under the black plastic rad cover. There’s a kinda hidden screw
Under the fender liner. By the tire you can see the top edge of the bumper where it meets the wheel well.
Pull the inner plastic fender liner back and there’s a bolt under there that bolts the edge of the bumper to the car.
With that bolt loose grab the edge and pull it off the side mounted track. Give a real good pull.
Soon as one edge comes off you will see which way to pull it off the track. The track has ribs and the bumper edge has slots that go over the ribs.
Sometimes the track ribs break off. Old brittle plastic. I always have 2 new tracks ready go go.
There cheap. I usually break the track ribs when I remove the bumper. There’s also a bolt under the bumper by the bottom edge at the wheel well.
Rest is just clips under neath.

 

If you can wait to fix the headlight until your bumper comes it would be a two for one. Some of the headlight repair videos show how to partially remove the front bumper, like someone said check out YouTube.