Battery Fan Cleaning

Their logic is clear. If your fan looks like that, then it should be cleaned. I've never looked at mine, don't know how hard it is to access.

 

My query is - is the battery vent filter a replaceable item? I can see mine starting to get blocked with fluff etc

 

they do nice work and are ahead of the curve most of the time.

 

I plan to clean mine at Carolyn's recommended mileage (60k). I'm at 38k, so that will be ~ 2 yrs from now.

I seem to recall a thread for a Gen 2 where someone had battery codes that were caused by dog hair in the fan.

 

I'm also keen to give mine a clean. Does anyone know if there's some kind of guide or something available to show me how to access this fan?

 

The factory service manual shows how to remove the fan. For the 2004 manual, the procedure starts on page 21-119. The 2004 manual was available as a download from a European website at one time; I don't know if it still is. You can also sign up for the Toyota subscription site to access the factory service manual. In the US, it is $15 for 2 days.

 

The attached pdf shows the blower fan diagnosis, removal and installation instructions.

 

Thanks very much jreed.

 

I don't believe there is one. No reason you can't make one though.

Damn, This car has codes for everything!

 

Yes the thread is here
http://priuschat.com/forums/gen-ii-...-fur-dirt-causing-major-battery-problems.html
where the owner cut a piece of home heating vent filter and fit it inside the HV battery vent grill. I am too lazy so I just tape a piece of filter on the outside.

No instruction is complete without photos. I recently pulled open the trunk with the HV battery fan exposed (not disassembled) for a different purpose - mouse proofing. See this post
http://priuschat.com/forums/gen-ii-...ng/71909-diary-wimpy-diyer-2.html#post1141598
and the one following it.

Have fun!

 

This really makes you wonder if this could explain quite a few battery failures. It makes sense.

 

Yes, when it is running at full speed which is not too frequently.

 

i have never heard it to my knowledge, at least not over the road/tire noise. that pdf was a great breakdown, makes the 90 bucks look like a bargain.

 

Does the 2010 have an easily replaceable filter for the battery fan?

 

I have just got myself a 2007 Prius, and judging by the interior the PO must have had a dog. Although most of the hair that is present is in the loading area and not in the passenger compartment, I would like to check out my fan in case of contamination.
It looks simple enough to get to it from the pdf, but the last instruction has me wondering.

At the bottom of the pdf is this instruction:-

14. PERFORM INITIALIZATION​

(a) Perform initialization (see page ​

​

​

​

IN-32).​

NOTICE:
Certain systems need to be initialized after
disconnecting and reconnecting the cable from​

the negative (-) battery terminal.

What actually needs to be initialized?

 

Driver's side power window auto up/down
Radio station presets
May lose trip odometer and MFD mpg reading

 

How about Nav destinations and phone numbers? Will they be deleted as well?
I don't want to disconnect the battery and reconnect a couple of hours later to find everything dead - including the car!!!

 

Okay, so for those of us who will be having the dealer perform the work, 2 questions:

1) Do I ask for an HV battery fan replacement or can they just do a cleaning?
2) How much should I be prepared to pay?

Mine's an 04 with 115K miles on her.