Hybrid system Malfunction (Visit Your Dealership)

About the DIO KARR alarm system in the car I bought:

The Toyota Clovis dealership where I bought this car is a Penski dealership.
There was $0 clovis dealership markup on the MSRP price for the car.
In December of '23 every Toy Prius Clovis sold had a 'KARR security systems developed by SWDS' system installed in as a Dealer installed Option (DIO). The KARR alarm DIO increased the car price by $1295. I secured this car with a deposit and waited for it to be delivered.

My Local SLO Toyota dealership was marking their PP up $7500 above MSRP at the time (I negociated this down to $5500), and they adding a Vehicle Theft Registration (VTR) as a DIO for an additional $499. They were not willing to sell the car without this DIO cost, stating that it was install at Toyota (FIO) and that they activated/registered it at their dealership as a DIO cost.
I canceled this sale the day the car arrived at the SLO dealersship.

Point being that the car has an alarm system:
'KARR security systems developed by SWDS'
I was required to buy it if I bought from Clovis toyota at the time.
They installed and activated it. I figured I'd just let it ride and see how it works out.

I do believe that this alarm system is working and adding to the 12v parasitic load on the on the vehicle battery. Most likely a sufficient paricitic load to exasperbate the 12v battery problems I am experiencing now.

I installed a Battery Monitor II (BM2) device on the battery. It reports 12v battery voltage periodically and plots a graph of that voltage on the iphone app and can download battery voltage over time as a csv to my phone.

I also have charged the battery with a CTEK MultiUS 77002 7.0 amp lead acid battery charger. I have done this a few times, when I fond the battery voltage down approaching 12v (resting voltage).

I just do not believe that I should have to manually charge the 12v battery on a new carr periodically.

I guess that my first effort will be to turn off the car alarm and see how the toyota 12v system holds up without that paracytic load.

If that does not work, I could prop up the battery performance for a long time by charging it weekly with the CTEK. But this defeats the idea of having a warranry on the vheicle that includes the battery.

Disappointed to say the least.

 

Looked at his posts and comments. Did not find anything about an 'over the air' update. Need moer help here please.

 

Does the battery have to be isolated from the car to perform this test ?

 

I figured that. But does the battery needd to be isolated from the vehicle to perform the test ?

 

Disappointed once again this morning (Sunday).
Charged the traction battery from the house ac power. Had the house solar system battery fully charged and the system was putting power back into the grid. I try and use this 'extra unused solar power' to charge the Prius traction battery father pumping it back into the grid when I can.
After hours of charging the Prius from the solar, and then from the house solar battery (sun went down), I got to the low SOC charge reserve I setup on the house solar battery. Stopped the Prius traction battery charging, it was not quite at 100% (really only about 90%) but a good time to stop, before it got to Prius Battery max charge SOC.
This morning I went out and switched the Prius to READY mode. The chkENG red light was on. Message on mulit-information display in the Information display area (on left side of meter display):
"Hybrid System
Malfunction"
"Visit Your Dealer"
and then
"Check Engine
Visit Your Dealer"
12v battery was at 12.53v last night when traction battery charging was discontinued about 10 PM last night . Now its 12.44 v (05:30 PM).
Will call for another appt tomorrow morning at the Local Toy Dealership.

 

How do I read the checkENG diagnostic codes. Which OBDII port wart and which iPhone App works for 2024 PP SLE ?
(PS: I did not install the alarm system. It was a required Dealer Installed Option by Clovis Toy dealer at the time I purchased the car. I think you are right and I need to return to that dealership (120 mile trip one way for me) to get the KARR alarm system turned off/defeated, and maybe removed from my PP)

 

I would agree with that.