Thread: Self induced errors.

I spoke too soon, door light doesnt appear to be a problem bit got transmission error on dash plus lowered height and hdc not available.

From my experience with similar faults , did these start since you fitted your aux battery ?

I chased a similar issues of random faults which in the end was a dropped cell in the battery, the battery voltage was fine, the car started fine , alternator charge was fine and after pulling things out, checking connections etc I decided to load test the battery and it was not good. A new battery under warranty and the issue never came back until I disturbed the earth leads on the studs in front of the main battery box, then the car went crazy with faults.

I could be totally off track but for me if it did start then , I would remove the wiring from the auxillary battery and see if the same thing happens then progress from there.

Cheers Ean

Originally Posted by Ean Austral

From my experience with similar faults , did these start since you fitted your aux battery ?

I chased a similar issues of random faults which in the end was a dropped cell in the battery, the battery voltage was fine, the car started fine , alternator charge was fine and after pulling things out, checking connections etc I decided to load test the battery and it was not good. A new battery under warranty and the issue never came back until I disturbed the earth leads on the studs in front of the main battery box, then the car went crazy with faults.

I could be totally off track but for me if it did start then , I would remove the wiring from the auxillary battery and see if the same thing happens then progress from there.

Cheers Ean

Thanks Ean, yes it did start right after fitting the aux. battery. I used the top unused stud in front of the main battery for the sc80 earth point. I will disconnect the aux and see how it goes, i know its something simple.

Originally Posted by loanrangie

Thanks Ean, yes it did start right after fitting the aux. battery. I used the top unused stud in front of the main battery for the sc80 earth point. I will disconnect the aux and see how it goes, i know its something simple.

Funnily enough , when I used that same stud for the SC80 my car lit up like a Christmas tree. I ended up making a piece of stainless steel that went over both those studs and had a separate bolt for any other earth leads.

Sounds stupid but the car went into melt down when I did what you did , I couldn't clear the faults quick enough. I had to remove the SC80 wire and put things back the way they were.

Cheers Ean

Originally Posted by Ean Austral

Funnily enough , when I used that same stud for the SC80 my car lit up like a Christmas tree. I ended up making a piece of stainless steel that went over both those studs and had a separate bolt for any other earth leads.

Sounds stupid but the car went into melt down when I did what you did , I couldn't clear the faults quick enough. I had to remove the SC80 wire and put things back the way they were.

Cheers Ean

Is there a paint / coating issue that’s leading to a poor earth maybe? A bit of wire brush action needed?

Originally Posted by DiscoJeffster

Is there a paint / coating issue that’s leading to a poor earth maybe? A bit of wire brush action needed?

I don't know , it was strange, took 1 lead off ( the extra SC80 put on ) and all good again.

I think I used a piece of stainless about 60mm x 30mm( that's a rough guess but easy to measure , it went over the 2 studs and had enough room to fit a bolt in the top corner , then I put the existing earth leads back on the studs and the extra battery neg lead and the SC80 lead onto the bolt.

so far no issues . I think Tim Traxide has a similar set up for the fitting of a winch and extra earth stud.

Cheers Ean

Strangely both batteries are fully charged, aux 13.0 and main 12.8. Maybe i should try one of the other earth studs.

In my Traxide kit you also make use of an earth stud behind the driver footwell kick plate, not sure if you have that.
These symptoms are also similar to that seen when the brake light switch is faulty.
Your accessory fitting could be coincidental.

Scott