Strange Errors on the dash and beeping

Jkulin

Member
Hi All,

I have had an issue since getting the car 10 years ago with just the odd bleep for no apparent reason at all.


In 2023 I took it out and it was continual, I have attached a link to the bleeping, now because of this I didn't drive the car very much, in fact about 150 miles from MOT to MOT. I was encouraged to give the car a very good charge as potentially The SuperCarRooms thought it was a battery issue from not being driven, despite it always being on a trickle charge.

In additional, I kept getting an intermittent green dash appear instead of the Green D or Manual gear indication, as per the image below and after a short period it returns to normal: -


1739556825581.png

Well the car had to go down to them as I hit a pothole and it caused the power steering hose to split, Maserati wanted £3500 for a new unit, when it was just the **** hose, anyway sorted with a custom made replacement hose for £350, whilst it was with them, I stressed to them to get to the bottom of a number of problems: -

1. Fix Power Steering Hose
2. MOT Vehicle
3. Fix the bleeping
4. Fix the dash Error
5. Fix the Parking Sensors

When they took the car for an MOT it failed on a sticky parking Brake, intermittent fog light switch, cracked rear tyres, and whilst returning it from the MOT it split the coolant hose that went over the back of the gearbox!

Now bear in mind it was with the SuperCarRooms for 6 months, they had staffing issues and a short period at the beginning was because of arguments with the Insurance assessors as to what had caused the power steering hose to split.

They declared that the bleeping was because of a sticky passenger door lock and that they had lubed it and all was fine.

So upon picking the car up and on the short drive to GrayPaul in Solihull, everything seemed fine apart from the parking sensors which they were adamant was an electrical fault.

So after collecting it from GrayPaul, they confirmed that there was no electrical fault with the parking sensors, the issue was two parking sensors at the front which for the grand total of £950 they replaced and finally that issue is resolved.

GrayPaul did their routine check and declared that the Fog light switch was not working (Which the SuperCarRooms said they had fixed) and that for the grand price of £816 they could replace it, I have declined as I am sure I can find a secondhand switch!

As I was driving back from GrayPaul I was caught in traffic and the dash came up with the errors you see and I was able to video it whilst stationary and prior to this the bleeping was back!

I contacted the SuperCarRooms and to be truthful I think they wanted to wash their hands of the problems and recommended that I get in contact with Sam at Stradale Italia in Uttoxeter. Apparently Sam was the Head Mechanic at GrayPaul for 19 years and had left to start his own business: - https://www.stradaleitalia.co.uk/

I sent Sam the video and gave him a run down of the issues, he said that he recalls a vehicle having very similar problems some years before and it turned out to be the small Gearbox Wiring Harness that needed replacing. So for £245+Drat. I have now ordered the part and have asked Sam to fit it and check things through.

Sam was quite critical of Independent garages using cheaper and inferior diagnostic equipment and said that he would have been able to pickup all the errors with his equipment.

When I look back on the bleeping and display errors it had never displayed the red gearbox error light, otherwise I would have been able to explain it, however as the issue had slowly got worse I recall it happening mostly when I was using Manual Mode or Sports mode, which supports his thinking of the cable.

I am not sure why the EPB Off light has come on as The SuperCarRooms said they had stripped and lubed it up in order to pass the MOT, I will ask Sam to have a look when I take it over to him.

So once the new Harness arrives (Marked in red as 25) I shall take it over to Sam to fit and check everything else out.

Automatic Gearbox Harness Part # 226037.png

Just thought it might be useful in case others get fobbed off with incorrect diagnostics.
 
Thanks for that I have a GT auto in with similar issue and the gearbox TCU keeps dropping out. It’s water/corrosion in the harness so I’ll look into your link as it’s better than repairing it
 
I’ll confirm when it has been fixed Matt, not worth paying out for the harness if it isn’t that.
 
His to be fair locks the shifter so the loom has fully failed then next try it drives normal. I’ll be replacing it.
 
Sorry to hear that you didn't get the service from the Super Car Rooms but as I've been out of the UK for 11 years now I suppose things change which is ashame as their facilities were top notch and they looked after some very special cars.
Back to that wiring harness I've changed 1 and I'd say it's a rare repair but the car I did which was back in New Zealand had gone through flood water.
 
Well I took my car over to Stradale Italia Uttoxeter yesterday and Sam asked me to leave the car for a couple of hours with him

He also checked the car over for me.

he said replacing the loom was a little awkward as he had to pass it over the top of the gearbox, but so far no errors coming up, so hopefully that is fixed.

He did say that the equipment that The SuperCarRooms used had not been clearing any of the codes, so he cleared everything so if the problem returns, at least he has a good idea where to look.

So all good so far, and it is lovely to get behind the wheel again.
 
Well I took my car over to Stradale Italia Uttoxeter yesterday and Sam asked me to leave the car for a couple of hours with him

He also checked the car over for me.

he said replacing the loom was a little awkward as he had to pass it over the top of the gearbox, but so far no errors coming up, so hopefully that is fixed.

He did say that the equipment that The SuperCarRooms used had not been clearing any of the codes, so he cleared everything so if the problem returns, at least he has a good idea where to look.

So all good so far, and it is lovely to get behind the wheel again.
Good to hear, I have the same loom to replace in a few weeks on a customer car.
 
Sam said it wasn’t quite straight forward as he thought and I think he had to slacken the gearbox crossmember, but driving home it seemed fine
Yes, nothing ever is but I’ve already diagnosed that loom as faulty. Cleaning the contacts lasted for a few weeks then it went again.
 
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