Lost power to high load aux switches

[Farkleface]

Lost power to aux high load switches ?

Added some Baja designs lights to 25amp factory location under hood. They worked for a few days and then lost power. Also lost power to most aux switches (winch, roof taps, under hood power taps)
I have checked all fuses that are related to that system and they are all good ? Any ideas ?

 

[TheDocAUS]

Lost power to aux high load switches ?

Added some Baja designs lights to 25amp factory location under hood. They worked for a few days and then lost power. Also lost power to most aux switches (winch, roof taps, under hood power taps)
I have checked all fuses that are related to that system and they are all good ? Any ideas ?

Did you also check all the fuses in both busbars? And the High Load Auxiliary Switch Panel fuse box?

Post in thread 'Littelfuse FHZ busbars used in the Grenadier'

Sep 13, 2023

PART 2- HOW INEOS USES THE LITTELFUSE BUSBARS IN THE GRENADIER

BACKGROUND
The busbar covers have been removed to take the images. The covers were put back in place after the images were taken.

The Images are from a 2023 AU Spec Trialmaster Diesel, with the High Load Auxiliary Switch Panel option and front winch fitted. I have seen enough images to know the precise configuration in the busbars can vary.

Tip: always check your own vehicle. If in doubt, speak to the dealer or your auto electrician. None of the information has been verified by INEOS. I am not aware...

• TheDocAUS

• 

 

[LWA55DAL]

The aux switches have a separate fuse box and separate fuses for each one of the switches. You have to take the cover off to access the fuses serving the aux switches.

 

[rob88]

Lost power to aux high load switches ?

Added some Baja designs lights to 25amp factory location under hood. They worked for a few days and then lost power. Also lost power to most aux switches (winch, roof taps, under hood power taps)
I have checked all fuses that are related to that system and they are all good ? Any ideas ?

You likely tripped a main power module or a large high-amp fuse. Stop checking the small fuses. Find the big black fuse box under the hood, called the Integrated Power Module. Test the largest fuses in it for the aux system with a multimeter—they can look fine but be blown.
Also, disconnect your main battery for 15 minutes for a full reset. If power doesn't come back, the module may be locked out and need a dealer scan tool to reset.

 

[Rok_Dr]

You likely tripped a main power module or a large high-amp fuse. Stop checking the small fuses. Find the big black fuse box under the hood, called the Integrated Power Module. Test the largest fuses in it for the aux system with a multimeter—they can look fine but be blown.
Also, disconnect your main battery for 15 minutes for a full reset. If power doesn't come back, the module may be locked out and need a dealer scan tool to reset.

You'll find that the high amp pre-fuse busbars are under the rear passenger seat, not in the engine bay. To start with I would look at the 80amp z case battery fuse in position 4 on the 5 stud Accessories pre-fuse box.

Further details below:

Cheers
Steve

 

[Farkleface]

You likely tripped a main power module or a large high-amp fuse. Stop checking the small fuses. Find the big black fuse box under the hood, called the Integrated Power Module. Test the largest fuses in it for the aux system with a multimeter—they can look fine but be blown.
Also, disconnect your main battery for 15 minutes for a full reset. If power doesn't come back, the module may be locked out and need a dealer scan tool to reset.

Ok, this is great information. I will check these fuses. I have checked all fuses under rear seat with no luck. I Tried the battery reset with no luck.

I do have a airbag warning light on dash that will need to be reset by dealer next time I take it in. Triggered it working on the stereo.
Cheers
Matt

 

[Farkleface]

You'll find that the high amp pre-fuse busbars are under the rear passenger seat, not in the engine bay. To start with I would look at the 80amp z case battery fuse in position 4 on the 5 stud Accessories pre-fuse box.

Further details below:
View attachment 7915345
View attachment 7915346

Cheers
Steve

I did check these fuses by eye and they look good. I will check it with multi meter.
Thanks !

 

[Clark Kent]

You likely tripped a main power module or a large high-amp fuse. Stop checking the small fuses. Find the big black fuse box under the hood, called the Integrated Power Module. Test the largest fuses in it for the aux system with a multimeter—they can look fine but be blown.
Also, disconnect your main battery for 15 minutes for a full reset. If power doesn't come back, the module may be locked out and need a dealer scan tool to reset.

Hi @rob88 Would you please post a photo of the integrated power module to help identify it. Thanks.

 

[Logsplitter]

Hi @rob88 Would you please post a photo of the integrated power module to help identify it. Thanks.

You beat me to it
Along with it a picture of your 2022 build Grenadier

 

[Karearea]

You likely tripped a main power module or a large high-amp fuse. Stop checking the small fuses. Find the big black fuse box under the hood, called the Integrated Power Module. Test the largest fuses in it for the aux system with a multimeter—they can look fine but be blown.
Also, disconnect your main battery for 15 minutes for a full reset. If power doesn't come back, the module may be locked out and need a dealer scan tool to reset.

Not really sure a post from what appears to be a completely inexperienced “member”/account is actually that useful!
Are you human?
Do you own a Grenadier?
What is your purpose here?
Just interested

 

[Logsplitter]

There are quite a few factually wrong posts from rob88 that just aren’t consistent with someone who actually owns a Grenadier.