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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Mar 07, 2017 7:04 am 
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Joined: Mon Feb 20, 2017 7:53 am
Posts: 53
TonyWilliams wrote:
To test if the heater is working requires no special tools or knowledge.
1) Use a simple 10mm socket or wrench to remove the 5 screws from the black plastic "motor cover" that says Toyota (or does it say RAV4 EV?)
2) Remove the plastic cover
3) Turn on car to READY
4) Turn on cabin heater to AUTO with a temperature setting well above ambient
5) Put your hand on the physical Denso 6kW cabin heater... it should be getting hot
6) If not, you need a new cabin heater.
Image


It doesn't look like swapping out that heater unit is too difficult. I'd be interested to know more about how the coolant purge procedure is performed.

I'm curious about this text from doug401's service tech.
doug401 wrote:
...
Verified no heat from heater, Inspected Continuity of cabin heater fuse through DC/DC converter at cabin heater terminal + to main power cable, has open circuit. Inspected resistance of cabin heater at cabin heater connector, has 222 ohms at connector (readings same checked + to - & - to +). Needs cabin heater & DC/DC converter. Called TAS case #TA133430164. Replaced in cabin heater & DC/DC converter. Performed collant air purge & thermal system test. rd tested ok, heater operation normal
...


Do you suppose this operation is documented in techinfo.toyota.com somewhere? I'd like to be able to determine if my DC/DC converter is affected.


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 Post subject: Re: Heater Not Working
PostPosted: Tue Apr 25, 2017 5:51 am 
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Joined: Mon Feb 20, 2017 7:53 am
Posts: 53
Kohler Controller wrote:
Did you mean to say I could simply replace the diode in the DC-DC? Any idea the part number (or rating/size)?

I took one apart.
viewtopic.php?p=25523#p25523

The diodes in question look like Bussmann FWP-40A14Fa.
http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/product-datasheets-b/Bus_Ele_DS_720025_FWP-%285-50%29A14F.pdf

These look fairly abundant on e-bay.


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 10:45 am 
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Joined: Mon May 22, 2017 7:48 am
Posts: 11
ddoxey wrote:
fromport wrote:
llnsj wrote:
Here is the 1st page. I did not ask for a full 4 page but it contained what I need to know.
[img]
https://goo.gl/photos/QTiqMjKz5QNFUwpm6
[/img]

LLN


Thanks! that is really interesting info.
Everyone after Vin number 3299 has a "updated PTC heater"

Good to know, thank you for posting!


Agreed. I've been wearing Google out trying to find a trace of this document online somewhere.

The term "Production Change Effective VIN" suggests that Toyota expects this problem does not occur after this VIN?

I've read every single post on this thread twice over. From what I can tell ...
* the heater unit has a high failure rate (percentage unknown)
* a failed heater unit is known to cause damage to the DC/DC converter unit (but not always)
* a damaged DC/DC converter is known to lead to complete failure (in at least one case)
* the heater is not known to fail again after being replaced
* Toyota corporate is known to be sympathetic and offer a 30% discount on the repair (in at lease one case).

I would expect that the part number 87101-42010 would change -- i.e. 87101-42010 are known to be defective and a different part number is known to be the improved replacement. Is this not the case? How do the parts distributors know the difference? Are they marked with production dates, and are they inclined to withdraw the older production units from the shelves?

There is not very much information on the Manufacturer's website: http://www.eberspacher.com/products/ele ... aters.html



URGENT: How safe is it to drive with the cabin heater out - can one avoid it taking out the dc-c converter if one simply avoids turning on the cabin heat??


So I was all excited to announce that I finally joined the Rav4EV club but here's my story - picked up a really nice shoreline blue at Cabe Toyota, 55k miles + extended used car warranty this weekend. Only thing was that cabin heater wasn't getting warm. I wasn't gonna take it then the sales guy says "If we give it to you in writing that we'll fix it, can we earn your business today" I say "it's expensive, it could be a few thousand $$" but he isn't listening, eager to make the sale...

We go ahead with it, I get it in writing as part of the contract, meanwhile I say it is covered by the warranty anyway so it should be fine...

Now the guy calls me today saying they cant afford to fix it (!!) AND that since my Platinum Warranty only kicks in after like 30 days I cant even get it fixed at another dealer until after 30 days... I tell him well you should give me a loaner vehicle, or a discount to pay for a loaner, he calls back and says that his sales manager says they brought down the price so much already they have no room to pay for a loaner or give me a discount but I can return the car and they'll give us a full refund.

Our thing is - we like the car - we just want it fixed! What should I do/ say?? I'm scared to continue driving it if it can cause more serious damage. He says that his service manager says he doesn't think there is any risk to driving it for 30 days but can I really trust anything these people say?! (I also read an earlier post in this thread, from way back 2014 or something so maybe they didnt know back then, but some one here said that Toyota corporate "considers the vehicle unsafe" to drive with the cabin heater out??)


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 2:38 pm 
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Joined: Mon Feb 13, 2017 7:45 pm
Posts: 18


URGENT: How safe is it to drive with the cabin heater out - can one avoid it taking out the dc-c converter if one simply avoids turning on the cabin heat??


Our thing is - we like the car - we just want it fixed! What should I do/ say?? I'm scared to continue driving it if it can cause more serious damage. He says that his service manager says he doesn't think there is any risk to driving it for 30 days but can I really trust anything these people say?! (I also read an earlier post in this thread, from way back 2014 or something so maybe they didnt know back then, but some one here said that Toyota corporate "considers the vehicle unsafe" to drive with the cabin heater out??)[/quote][/quote][/quote]

If it's about safety you shouldn't have to worry. Mine was out for weeks after I noticed the issue. The worst it could have screen of death so you can't drive anymore. (I think it could be reset with proper procedure). It will not break down in middle of road.

llnsj


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 4:17 pm 
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Joined: Wed Nov 14, 2012 9:50 pm
Posts: 3807
Location: San Diego
This is a non-event. If you like the car, wait the 30 days and get it fixed.

It's safe to drive, and its not damaging anything in the car now that it's broken.


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 4:38 pm 
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Joined: Mon May 22, 2017 7:48 am
Posts: 11
Thanks Tony and LLN

now we're noticing that while we drive, the eco-light on the dash goes on and off randomly. Also the climate control (AC) seems to be blowing even when we have it off - we still feel some air coming out. Not much but enough to notice if you put your hand in front of it. More concerning is that the climate control mode seems to be changing on its own while we are driving. Is it possible that these kinds of issues have anything to do with the DC-DC converter? Seems unlikely to me but I'm just asking - I saw one post where someone mentioned this issue before.


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 4:44 pm 
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Christopher Castagne wrote:
Thanks Tony and LLN

now we're noticing that while we drive, the eco-light on the dash goes on and off randomly. Also the climate control (AC) seems to be blowing even when we have it off - we still feel some air coming out. Not much but enough to notice if you put your hand in front of it. More concerning is that the climate control mode seems to be changing on its own while we are driving. Is it possible that these kinds of issues have anything to do with the DC-DC converter? Seems unlikely to me but I'm just asking - I saw one post where someone mentioned this issue before.

You will probably get some air circulation if the fresh/recirc setting is set to take in fresh air.


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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Tue Jun 13, 2017 4:50 pm 
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Joined: Wed Aug 13, 2014 8:30 pm
Posts: 213
Location: San Diego Co
The green ECO light is on when driving moderately (acceleration below the white arc zone) in D. It will not come on in B mode.

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 Post subject: Re: ALL POSTS - Heater Failed - Service Bulletin TSB 0111-14
PostPosted: Wed Aug 09, 2017 6:51 am 
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Joined: Fri Jul 21, 2017 5:23 am
Posts: 13
Location: Seattle, WA
Reading this thread I got curious about the heater in my rav4ev.
After following the instructions I think mine has a broken heater but a working dc/dc.

Has anybody in the Seattle area gone through the process of getting one repaired?
Any tips to share?

I did get an extended warranty and I'll wait for the paperwork to arrive. Thankfully we're still at the peak of the summer so I have a few months before it gets cold.
Do you contact Toyota corp first? or do you try to work with one of the local dealers?


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