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Al, it really is unbelievable the stuff you pull off on these Rav's.

Can you take some pics of the ldu and bearing project? I am trying to decide if its something i could tackle? I still have platinum warranties on both my rav’s but the dealers don’t seem to be able to get replacement ldu’s. It might make sense to cancel the warranty , get whatever refund and do...

Vlad - where can i download the original official techstream?

Al - sent a paypal - Thanks - I have had the parts on my desk for a month - I would probably never have gotten to it.

Al, When I was searching to buy the ford and nissan heaters, both rfer to this heater as a liquid PTC heater. The Rav doc suggests that and if I recall the rav fuse doc calls them ptc heater fuses

I HAVE HEAT! other than a clamp coming off and leaking coolant everywhere, install was painless. still have to button down jdemo but otherwise all good. Thank you everyone for your help!

The heater I am going to use to replace is a brand new Rav 4 EV PTC heater. Much like the tests is the thread referenced in item 3 - the resistance across the failed heater and the new heater are the same - given correct polarity on the plug. The new heater has the dc-dc connector wire, the tab...

Thanks Vlad, i will give that test a go next, i think your video on hv plug was exactly what i did, handle not fully up when reseating, with handle fully up, reseated and worked.

Thanks guys - I charged the 12 volt battery up - reconnected 12 volt - same as yesterday - car powers up - everything looks good like a normal 12 volt reset - no check EV or other error - a handful of trouble lights lit - seems normal - but second press of on button does not go to ready. I...

I put it all back together and I can't get it to go into ready mode - It also wont charge. So I checked my 12 volt battery - which is 3-4 months old (but the car has been sitting a month or so with no charging or driving) The 12 volt battery measured 11.32 volts - which double surprised me - so...

Wow Al, thanks for all that. I have both a digital and analog meter. And I tested with both to make sure readings were the same. It sounds like the heater and the dc-dc may be ok - the busted wires on the pump may be the heat issue - I will fix them - plug stuff back in and reconnect battery and...

Well - rereading the TSB test and looking more closely at the meter with the right glassed - it appears that past teh zero is infinity - which means an open circuit - which means replace dc-dc converter. But is it a replacement - which Leff has one for sale - or is it a fuse issue which could...

Al, This is the meter I used this morning. different meter than i tested continuity. With selector sent to X1K. Heater reads 20 at the green ohms scale on top. DC-DC reading goes past the 20 all the way to right at past zero. Does the 20 mean 20,000 ohms ? and does the zero mean I need to...

Well I am not really sure, with my multimeter its either 1 or a figure less than one, measuring continuity. Was I measuring the wrong thing? The heater stayed at 1, default measurement. The dc dc went to 0.0

OK - Need some help - as I pulled the JDemo frame away I noticed the remnants of mice below - I removed the Jdemo inlet and found this. I am pretty sure this is the PTC heater pump as one hose goes to the PTC heater. I have not yet removed the heater - Is it possible that this is the cause of...

Well I was always taught to do the same with positive and negative cables - and I wrapped them as soon as disconnected. Now the good news - the DC-DC path has full continuity - so thats awespme - I was pretty sure it was good but you never know. No continuity on heater - which was expected...

I am finally ready to start on this heater replacement project - I have both a brand new Rav heater as well as a used leaf and ford heater. But first I want to test the dc-dc fuse and I want to ask if I need to disconnec the 12 volt battery completely or just the negative side?

Al - I checked your link above that is some info - and all the pics are there - not sure if thats whats missing here. Is this used in conjunction with ethe other heater or just used as the heater in eco mode?

As another heater failure - this Rav has actually had the heater fail twice - once dc-dc was taken out - once not. On the failure that included dc-dc converter - my recall was it was working then not working -p no slow fail. On my failure that didn't take out dc-dc - it was a slow burn - would...

Thanks - one more question - did you have to disconnect jdemo or just move it aside? and did you disconnect the HV battery for this work?