Omer

On 3/5/2021 at 8:38 AM, Greisingel said:

You’re more motivated than me. Wellies and 1KV gloves good idea.

You’ll need a helper.

Make sure you mastic the rear hatch seams 

 

Right so it turns out that after giving another round of fan drying (this time a more powerful fan) the issue is gone for now (finger crossed). Gonna keep the fans on for 2 more days to be perfectly sure. Next up it to find the darn leak, think it is the rear hatch.

10 hours ago, Greisingel said:

Hadn’t thought of that. So you can’t get it started after neg lead reset?

i only went the gravitational route cos I couldn’t face all the HV removal work. I’ve gotten real lazy in lockdown. 

I can get it started once i remove 12v Battery lead and connect again but I dont have anywhere to make a sharp downward nose angle to park :(, thus thinking to jack up, but also thinking to spend on getting those 1000v rated gloves and insulated sockets and just remove the hybrid Battery and clean it properly. 

3 hours ago, Greisingel said:

Yes there may be more pooling than can reasonably be evaporated.

I pointed my car nose down a steep hill. That seemed to shift moisture out of HV case. Technical no? Lol. But it allowed me to prove the HV could work. This can be proved also by disconnecting aux battery, waiting, reconnecting and starting  

The drying process takes a long time. It’s when you need a Californian summer. The RX400H is more robust than one imagines or these forums might imply.

Removing the HV is a job. It’s very heavy as are the seats as you’ve discovered no doubt.

Just try the nose down after an aux battery hybrid warning clear. You should be able to start the car after neg lead disconnect on aux. Then move the car nose down a San Francisco street.

If you do move the HV there are drainage grommets that’ll be bunged up. That’s the pooling problem

Right so if ill get 2 x car jacks and lift it as high as possible that might be wort a try before going for Battery removal ?

On 3/2/2021 at 1:39 PM, Greisingel said:

You should be ok. If you work on the HV battery take care. It can deliver a lethal kick. There’s an orange isolator at one end.

But I didn’t need to do any of that. Dried the hell out of it.

Leaks ingress around rear hatch seams, lighting cluster, sub bumper vent, bumper plastic dowels below lights, leaking door cards (usually resulting in we well carpets).

Techstream can clear the other dtcs.

Once the Hybrid warning has cleared you’ll be able to ready the car. 

Unfortunately the warning is still there. Next thing it seems is to remove the Battery and see any water underneath as fan drying probably didnt reach those areas. Would be seeking a local electrician to help out. I have seen the step by step process to remove the Battery but would prefer someone with electrical experience to do it.

On 1/28/2021 at 9:22 AM, Greisingel said:

POAA6 526 is triggered. Resistance failure location code comes next. In my case it was 612 which is the battery case itself. These INF or sub codes can be seen in Techstream after the DTC is determined and you press LIST.

And sure enough I find water and leaks. The Rx400h has a major defect in its rear lid hinge seams and rear light cluster seals. I am now drying out the car and have the nose pointed steeply downhill  to drain water down.

This way I got rid of the POAA6 error and was able to get READY to start the car. This allows me to run the engine with heater full on to help dry car out and remove water short. 

I have put a fan heater in aimed at the battery area and cleared the rear trays out to expose the metal base looking for water intrusions. And I have found them. I taped up the seams and will mastic the light seals (Tiger Seal).

100% same issue ive got. Its the PA006 526/612. But i have removed the back seats and have 2 x fans + 1 x dehumidifier on. Going to keep it for 2-3 days. Wana be absolutely sure. Have removed the Hybrid Batter or its cover (dont really want to). 

Hopefully fans will do the job.

Hi All.

Sorry didnt write before. So here is the situation. Techstream software and Cable ordered online for £20. Took many attempts but finally got it to work. Anyone needs help in installation of the software then let me know.

Now the sad part, the error code is P0AA6 "Hybrid Battery Isolation Failure". I have checked this forum and there is videos on youtube and seems its been caused by water ingress. Now I admit that front passenger side beam where the air bag is has wet mark and suspect that a leak from there has caused the floor wet so much so that its wet all the way on back side floor too. 

I hope drying it up and then trying again would sort it, but to dry it would be a mission in itself (any ideas welcome). Hopefully the water hasnt made its way to hybrid Battery because that would mean removal of back seats to access. If that's needed to be done then ill be sending it to a garage as im really bad with electricals.

Hi. New to this forum.

Lexus RX-400h 2007 101000 miles.

Issue: Starter 12v Battery drain, every winter the issue comes. This time when replaced it with new Bosch Battery and after 2 min of driving the Check Hybrid, Check VSC message started showing and the caution lights of car slipping and power check comes on as well. I thought it maybe the new Battery isnt the correct one so replaced it with another new Battery but same thing is happening. The car wouldn't start and only way to get it start is to remove the 12V Battery terminal and plug again but all lights would come back again after 1 min.

Have ordered the techstream and now waiting. But any suggestions are welcomed.