What does it say if you switch your language to English?

 

That was indeed a good question! The real message is a traction battery fault. Thanks for the tip, now I know it's going to the dealer first thing tomorrow !

 

Can I ask what the problem was I am having the same issue and my car comes on shows this then cuts out.

 

Does it not clear when you drive around the block?

Also, it may still be the 12V battery, this error is one of those that pops up when it goes bad. Fingers crossed!

 

Nope, drove 20 miles today, very short trips, 2 long stops, and it's still there. No side effects, I didn't notice anything.
We'll see what the dealer says
My 3yr loan is ending soon, they have proposed to extend it for 2 more years, it will depend on this I think

 

Most of the time the cause is an old worn out Aux Battery. I had the exact problem recently and Jag replaced it under warranty

 

Does it not clear when you drive around the block?

I always thought the drive around the block cured the "OK to drive with caution High Voltage system fault detected" which is a loss of isolation problem.

 

sooner or later your aux battery will die completely. You CAN JUMP IT or boost it to start the car up. Then go purchase a non-lithium battery. This is all mine required. As I said mine was under warranty as I am sure yours is as well.

 

The 12v system is the Achilles heel of the vehicle.

 

Must be a monday thing....I had various errors this moring - Car wont start, Wattcat says 12V is low...
So hopefully 12V Battery - Never had them replaced in the 55k miles & 4 1/2 years I have had the car. Still under warranty - just....SO hopefully that will see me through...

 

Yours lasted a long time as 12v in I-Paces go.......

 

Boy am I tired of battery related error messages and issues. I had the H441 recall work done last week. A day later I got the brake pedal feel error so I parked the car for a few days. Today I got a slew of new errors some of which I had never seen before.

You can seen them scroll by on the attached video. Now the car wont move. I'll put a trickle charger on the starter batter and see what changes over the course of the day. BTW I had all of the 12 volt batteries replace a few months ago under warranty.

Wattcat says that the one 12 volt battery that is monitored has 14.8 volts.

 

The Aux smaller battery on the right can create all type of errors. The large starter battery on the left appears to be quite stable. Replacing this Aux battery will solve most of these odd warnings and fault indicators.

View attachment 7847
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waiting for tow truck....almost 3 hours so far....

 

Similar errors to mine....

With H441 applied? If so, when?

 

H441 applied about a month ago - July 10th

Tow Mechanic didnt know how to release EPB or release car into neutral. So started dragging it until I could find the procedures on here for both.

 

Probably the auxiliary battery coincidental failure. Gearbox fault suggests this battery, not the startup battery, or front wiring harness failed.

 

Or H441 wreaks havoc under certain conditions ... which would not surprise me, given what it does to the GoM. It's a buggy and/or poorly designed patch.

 

But it isn't doing any updates to the braking system as indicated by the messages. Brakes and gearbox (EPIC - probably front) rely on power from small auxiliary battery and an intact front wiring harness.

 

I see. So you think it's another 12V battery failure even though it was replaced recently? Bad luck then ... still, I have nagging doubts about H441 ...

 

Starman67 and ThinAir descriptions fit the auxiliary battery & wiring harness symptoms. Possibly the other software updates related to keeping the 12V batteries charged have not been applied.

@pcst has a MY21 so it will be interesting to know what dealer diagnosis is.

 

Starman67 and ThinAir descriptions fit the auxiliary battery & wiring harness symptoms. Possibly the other software updates related to keeping the 12V batteries charged have not been applied.

@pcst has a MY21 so it will be interesting to know what dealer diagnosis is.

Will post updates as I get them....Service tech thought it was just 12V Aux battery but needs to run some tests....

 

Update as of this morning -
12V Aux battery has failed
Also Power Distribution Box has Fault ( this is new - service rep said that fault could propagate from wiring harness to power dist box then battery.... Not sure I believe this any feedback useful...)
Checking Wiring harness now....
Going to be in for a few more days at least....

 

Update as of this morning -
12V Aux battery has failed
Also Power Distribution Box has Fault ( this is new - service rep said that fault could propagate from wiring harness to power dist box then battery.... Not sure I believe this any feedback useful...)
Checking Wiring harness now....
Going to be in for a few more days at least....

confirmed Power dist box & 12V Aux battery.
No wiring harness issues
Hopefully will get the cat back tomorrow....

 

Does anyone have wiring diagram of the batteries and power distribution module?

 

Car back - all seems to be ok right now.
Any update @pcst ?

 

Car back - all seems to be ok right now.
Any update @pcst ?

Hello! One battery module must be replaced, the dealer keeps the car. ETA end of the month. They are certified to work on batteries, that's a chance because not no so many dealers are. Wait and see !
...and I see I have published this answer thru another forum user, must be a mistake on my side

 

@Starman67 is there any notation found on paperwork for fault code(s) and work done?

Why do you want wiring diagrams? There are separate diagrams for auxiliary battery charging and the PSDB.

The auxiliary charging diagram is simplified quite a bit. It lacks showing clearly how the PSDB gets power from DC-DC converter. Looking at the diagram, one might infer that it is getting power from the startup battery to charge the auxiliary battery via the PSDB. In fact, the DC-DC converter power is being supplied to the battery junction box and from there goes to the startup battery and PSDB.

You can glean real control of the auxiliary battery from the PSDB diagram (DC-DC converter feeds the battery junction box that feeds the PSDB that then supplies 12V to the auxiliary battery when told to by the BCM/GWM via a LIN).

The description document does a much better job of explaining the relationships of the components than the wiring diagrams do.

 

@Starman67 is there any notation found on paperwork for fault code(s) and work done?

Why do you want wiring diagrams? There are separate diagrams for auxiliary battery charging and the PSDB.

The auxiliary charging diagram is simplified quite a bit. It lacks showing clearly how the PSDB gets power from DC-DC converter. Looking at the diagram, one might infer that it is getting power from the startup battery to charge the auxiliary battery via the PSDB. In fact, the DC-DC converter power is being supplied to the battery junction box and from there goes to the startup battery and PSDB.

You can glean real control of the auxiliary battery from the PSDB diagram (DC-DC converter feeds the battery junction box that feeds the PSDB that then supplies 12V to the auxiliary battery when told to by the BCM/GWM via a LIN).

The description document does a much better job of explaining the relationships of the components than the wiring diagrams do.

Fault codes:
B13C5-92 Secondary Battery Incorrect Performance
B1479-72 Power Supply Distribution Box Actuator Stuck Open

 

Battery module must be replaced, the dealer keeps the car. No part delivery date available yet.

 

Cooling system issue? HV heater failed? AC system and its components all working?
Also from back in March: https://static.nhtsa.gov/odi/tsbs/2023/MC-10233818-0001.pdf

A failure to be able to properly heat or cool the battery as needed will cause traction battery faults.

We're just speculating without fault codes.

 

Scroll up to post number 19 in this thread boys!

Of course I also don't have the foggiest, but it's definitely a puzzle at this point. I hope the dealer will figure it out! Best of luck! 🍺

 

The writeup is cogent. Seems like they found the issue.

 

The dealer called me moments ago to tell me the parts are not available yet (no ETA), so I will keep the loaner for quite a while, I guess... (Mitsubishi PHEV).

 

Does anyone have wiring diagram of the batteries and power distribution module?

Not much of a service diagram, I think it is a parts diagram, but it gives the general idea.
May have come from Ayepace.

 

Does it not clear when you drive around the block?