HELP!!! My cluster looks like a Chrismass tree...

[Talbs]

i there,


I drove the my Golf Wagon MK7 the whole morning without any problems, everything was working fine. I parked for 5mim to get something from the petrol station and when I came back the whole car went crazy. I started to get several warning lights and errors in the MFD, even my key stopped to work. To get back going I had to disconnect the ground from the battery for 5min and then I was able to turn on the car again.

When I got home, I did the scanner and reset all the codes to see if they went away. Few errors gone but several still persisting.

Does anyone have any clue of what happened??? A bad connection somewhere?

Thanks all!

Guto.

The scans before and after cleared are here:

https://drive.google.com/drive/folders/1-1zRjeKsE0wcCVabrSigBtpi_SPXCHhh?usp=sharing

I had something very similar the other day with the same errors plus the ACC (2016 R). Turns out the battery was low and needed a good charge. Once the battery was sorted, the persistent errors were clearable.
Might be a sign that a cell in your battery is about to fail.

Sent from my SM-G998B using Tapatalk

[Gutoneto]

What rubbish brand is it then as Ive never seen one without its particulars in some form on the top

States its capacities etc and usually a serial and model number

Hi,

The battery is a SuperCharge brand and I found some information about the model is MF66HSS and found the following writes: 0GKJ14 (engarved on the case) and a 3D barcode 0GJ11225228-5.

Apart from that nothing else.

[Gutoneto]

hmm.......... whilst changing the battery might have been necessary - it might be a red-herring. I'm not so certain that it was the cause of the original Christmas tree effect (I'm more than happy to be wrong)

hex03 error suggests that module is unhappy about how you have set-up the trailer function? What is the history of this module - it is original to the car? Has the long-code string been changed - if so, do you have a copy of the factory value?

hex17 module error is more problematic - it is recorded in your post above as "priority 1", it is "confirmed" and it is present in ALL your previous auto-scans.

"Check Sum" is software insurance mechanism that ensures the integrity of the individual Byte/Bits. It's a small-sized block of data whose value is derived from the rest of the digital data - for the purpose of detecting errors that may have been introduced when the module is reprogrammed, or if there is a unauthorized-change/failure in module memory storage.

The DTC has fault frequency=1 which meas that after first registration, the error hasn't reappeared in a subsequent ignition cycle. I can't deduce if this result is significant because you have removed the date of the auto-scan above

What is the history of the instrument module - what was the car doing on 17th October 2021 @ about 1:16 PM (was this when the "Christmas tree" happened)?

Don

Hi,

The battery was replaced in February as I was having some random errors due the low voltage. Once replaced and DTCs cleared all the errors went away. Since them everything been fine.

I do have a persistent error in the hex5f due a MIB2 retrofit related to the GPS antenna.

All the modules in the car still originals and I never enabled the trailer function, I disabled in the adaptations and the error related to the hex03 gone now. In the Xmas tree effect the ABS long code was replaced with 0s and I had to copy and paste the long code from a preview scan be able to eliminate most of the errors. The old ones I had to do some basic settings to get fixed.

The hex17 problem is something new, never showed up in any of my scans. I just appeared after the Xmas tree effect. Between the scans (about 6 weeks ago) I had a new spare key cut and reprogrammed to the car and now I don’t know is that is related to it.

The date mentioned it was the date and time of the Xmas tree event. (BTW, the date is off by two days as when I had the MIB2 installed the adaptation for the date and time menu had been missed, I’ll need to fix that soon).

Guto.

[Guest001]

Hi,

The battery is a SuperCharge brand and I found some information about the model is MF66HSS and found the following writes: 0GKJ14 (engarved on the case) and a 3D barcode 0GJ11225228-5.

Apart from that nothing else.

The engraved letters could be installers code for when it was fitted if its a roughly done engraving but usually stamped on . Or code for when it was made

[DV52]

The hex17 problem is something new, never showed up in any of my scans. I just appeared after the Xmas tree effect. Between the scans (about 6 weeks ago) I had a new spare key cut and reprogrammed to the car and now I don’t know is that is related to it.

Guto.

Guto: OK - the coincidence is suspicious (IMO, of course)!

The "reprogrammed" key happens in the hex17 module because that is where the immobolizer is located. And as I have said - the purpose of the check sum facility is "detecting errors that may have been introduced when the module is reprogrammed"!! Very compelling connection indeed!!

Don

[Lucas_R]

Hi,

The battery is a SuperCharge brand and I found some information about the model is MF66HSS and found the following writes: 0GKJ14 (engarved on the case) and a 3D barcode 0GJ11225228-5.

Apart from that nothing else.

I have the exact same Supercharge MF66HSS battery in my Mk7 Golf and agree it does not seem to have the details on it to update the car that a new battery has been fitted.

[gregozedobe]

I have the exact same Supercharge MF66HSS battery in my Mk7 Golf and agree it does not seem to have the details on it to update the car that a new battery has been fitted.

According to the Supercharge website it is an AGM battery, so battery technology = "FLEECE", CCA = 760 and just change the serial number (to anything different if you don't see one on the battery).

[Lucas_R]

According to the Supercharge website it is an AGM battery, so battery technology = "FLEECE", CCA = 760 and just change the serial number (to anything different if you don't see one on the battery).

Yes its an AGM battery with 760 CCA's. Thanks for the info, but seeing the battery is at least 14-15 months old (I bought the car last August and the battery was already fitted by the previous owner) im not sure if it's worth updating the info. but good info to know anyway, thanks.

[gregozedobe]

Yes its an AGM battery with 760 CCA's. Thanks for the info, but seeing the battery is at least 14-15 months old (I bought the car last August and the battery was already fitted by the previous owner) im not sure if it's worth updating the info. but good info to know anyway, thanks.

If you changed from EFB to AGM I'd still update the info. AGM last longer with a specific AGM charging regime, rather than using the voltage settings that are optimum for EFB.

[Guest001]

If you changed from EFB to AGM I'd still update the info. AGM last longer with a specific AGM charging regime, rather than using the voltage settings that are optimum for EFB.

AGM also charge at a different rate to an EFB which charges on a standard wet cell cycle on a charger so I guess will be similar in a car

[Lucas_R]

If you changed from EFB to AGM I'd still update the info. AGM last longer with a specific AGM charging regime, rather than using the voltage settings that are optimum for EFB.

Problem is that I have no idea what battery was fitted to the car from the factory as the Supercharge battery was already fitted when I bought the car just over 12 months ago.

Ive heard some cars are fitted from the factory with EFB and some with AGM.

I'll use my Carista to check as that now supports battery coding with one of the recent updates to the app.

[gregozedobe]

Problem is that I have no idea what battery was fitted to the car from the factory as the Supercharge battery was already fitted when I bought the car just over 12 months ago.

Ive heard some cars are fitted from the factory with EFB and some with AGM.

I'll use my Carista to check as that now supports battery coding with one of the recent updates to the app.

I'll bet it originally came with an EFB (that is what most Aus delivered petrol Golfs came with, as EFBs are cheaper than AGMs)

[Lucas_R]

HELP!!! My cluster looks like a Chrismass tree...

I'll bet it originally came with an EFB (that is what most Aus delivered petrol Golfs came with, as EFBs are cheaper than AGMs)

I checked it just now. My Carista app showed it to be registered as an AGM battery but the AH was set to 68 (should be 70 as per specs on SuperCharge website). Doubt that small difference in AH would do anything though.

Would only accept a 3 character code for battery manufacturer so SUP was used, and for serial number i just used a very VW/Audi-ish part number stamped onto the side of the battery in a very small font. It only accepts 10 characters so couldnt fit the whole code but got most of it.

[Guest001]

From what Ive seen on the subject just changing 1 or more digits is enough

From an old post reply by a current member Changed to AGM battery, re-coding required?

[Gutoneto]

I'll check my one as well and see how's set it up.