[Aus335iguy]

Originally Posted by Aus335iguy

I had a thought ... the error codes are for coms between DME and DKG. It may not be your box it could be your DME....They are common as shit

Also - do you run a jb4?

The symptom is that your car doesn't start not that it doesn't drive. You managed to get it to work by flashing. The symptoms come and go..

[juld0zer]

If the DME cannot get a valid signal from the DKG indicating it is in neutral/clutch is disengaged etc then it can prevent the engine from cranking.

I'll post up something in a few hours when i get home. I printed off a lot of stuff from ISTA when i was battling the sudden cruise control failure.

[aaron_]

Originally Posted by Aus335iguy

I had a thought ... the error codes are for coms between DME and DKG. It may not be your box it could be your DME....They are common as shit

Also - do you run a jb4?

No jb4, am mhd flash tuned

Car would start, if the green p on my shifter illuminated upon ignition, car would drive as normal. No illuminated p, no ability to engage gear. But the car would turn on 100% of the time

As for driving, doing a 2 min quick reflash of my custom map on the first or second flash if necessary allows
It to engage gear again.

[juld0zer]

The only document i could find relevant was just a general diag guide for this type of fault, nothing groundbreaking..

- This type of fault is logged by the receiving control unit if it does not receive a message expected from another control unit.
- Mainly occurs due to a physical problem with the connection
- Could also be a short circuit on the bus line (to ground, to battery positive, or across each other)
- Bad connection (corrosion, loose, dirty, bent pins, broken wire)
- Faulty control unit (rare)

Sorry it's not really of much help

[DR-JEKL]

Originally Posted by Aus335iguy

The issue is that they are pretty hard to brake...the mech units are fairly robust as well....

Yeah I did see a guy 12 months or so ago looking for one, I had put him onto a used M3 box but as hills had pointed out even though they're the same part # the starter is in a different position they got caught out (so that's at least 2 failed boxes that I know of)

[juld0zer]

Originally Posted by DR-JEKL

Yeah I did see a guy 12 months or so ago looking for one, I had put him onto a used M3 box but as hills had pointed out even though they're the same part # the starter is in a different position they got caught out (so that's at least 2 failed boxes that I know of)

Engine swap!

[DR-JEKL]

Originally Posted by juld0zer

Engine swap!

The used S65's are too expensive!! (Quite in demand as you know they fail quite often!)

[EB89]

S85 swap

[aaron_]

Originally Posted by juld0zer

The only document i could find relevant was just a general diag guide for this type of fault, nothing groundbreaking..

- This type of fault is logged by the receiving control unit if it does not receive a message expected from another control unit.
- Mainly occurs due to a physical problem with the connection
- Could also be a short circuit on the bus line (to ground, to battery positive, or across each other)
- Bad connection (corrosion, loose, dirty, bent pins, broken wire)
- Faulty control unit (rare)

Sorry it's not really of much help

Yeah, kind of new that stuff but appreciate your repeated efforts!!!

Originally Posted by DR-JEKL

Yeah I did see a guy 12 months or so ago looking for one, I had put him onto a used M3 box but as hills had pointed out even though they're the same part # the starter is in a different position they got caught out (so that's at least 2 failed boxes that I know of)

Good tip!!





As for the engine swap comments, will still need a new gearbox so no hahaha!

[aaron_]

Little update

Spoke to the dealer yesterday, there’s a $140 wiring loom inside the gearbox that I’m hoping the problem is. Bmw Germany has said to replace that, if it doesn’t fix it, it must be the mechatronics but DONT do the mechatronics without trying this.

To replace this loom, gearbox oil is drained, transmission is separated from flywheel etc so labour to install is $4000 retail. I’ll be getting trade pricing

If this doesn’t work, it’s mechatronics time

Will know maybe end of today or definitely Monday.

[EB89]

Originally Posted by aaron_

Little update

Spoke to the dealer yesterday, there’s a $140 wiring loom inside the gearbox that I’m hoping the problem is. Bmw Germany has said to replace that, if it doesn’t fix it, it must be the mechatronics but DONT do the mechatronics without trying this.

To replace this loom, gearbox oil is drained, transmission is separated from flywheel etc so labour to install is $4000 retail. I’ll be getting trade pricing

If this doesn’t work, it’s mechatronics time

Will know maybe end of today or definitely Monday.

Bloody hell :/, fingers crossed mate

[Aus335iguy]

4k far out. may as well get a second box, change the cable and sell that one?

[juld0zer]

Im free this weekend if they are open for me to have a crack?

[e36mmm]

Oh man that's harsh. Hopefully it ends there successfully.

[aaron_]

Originally Posted by EB89

Bloody hell :/, fingers crossed mate

Me too!!

Originally Posted by Aus335iguy

4k far out. may as well get a second box, change the cable and sell that one?

I’ve considered it, but as I said, I’ll get trade price. Will come down “significantly”. This box is currently worthless, unless someone want a MAJOR expense to come along with it in refurb.

Will enjoy the piece of mind of a fully serviced gearbox with new wiring.

Originally Posted by juld0zer

Im free this weekend if they are open for me to have a crack?

They’re closed on the weekend unfortunately and may get offended at outside help, then hold it against me during pricing time. I’ve been extremely happy so far and have feel good about how they conduct their business. Appreciate the offer though!

Originally Posted by e36mmm

Oh man that's harsh. Hopefully it ends there successfully.

Hopefully, but I doubt it. That would be too easy :-)

[juld0zer]

Keep us updated mate Interested to hear the outcome.
I've only gotten as far as taking out the clutch basket at training but the rest seems pretty straightforward, albeit uncharted territory for most dealers in this country

[MJ80.]

Are you getting this work done through a dealer ? No wonder all the prices are absurd. Just get it done via a normal euro mech and save thousands.

At 3 to 4k for a gbox drain and refill and a 400 buck part your 100% being ripped. A drain and refil/service on the dct is an 8 or 900 buck job tops plus your part lol doesnt equal close to 2k let alone 3 and 4k and better still this may not even fix it lol


Put a new box in for the same money and 100% fix it.

[Aus335iguy]

Two people here have been quoted 2750 just to remove box, replace filters and gaskets and replace box. That was at a leading independent repairer here in Sydney
You could probably do a powerglide conversion cheaper lol

[juld0zer]

Most of the cost is in the labour and oil.

But getting the box out/in is not that difficult. A conventional auto or a transaxle R&R is only slightly more involved.

Most independent shops wouldn't have the tool to suspend the gearbox and hold it so the input shaft faces up. Yes you could stand it up on the donut or output shaft but they'd be paying out of their grave if it fell and cracked.

[Aus335iguy]

Bit cheaper than a new one but not by much... what's happened mate ? Any luck?

https://rover.ebay.com/rover/0/0/0?m...2F322877962901

[juld0zer]

Parts ex Germany are usually 3 weeks approx. They sometimes show up earlier.
Even if they flagged it as a VOR (Vehicle Off Road) it would take about 7 working days at best. Pretty shit when you can get parts from the states over the weekend if you order on the right day!

[aaron_]

Originally Posted by MJ80.

Are you getting this work done through a dealer ? No wonder all the prices are absurd. Just get it done via a normal euro mech and save thousands.

At 3 to 4k for a gbox drain and refill and a 400 buck part your 100% being ripped. A drain and refil/service on the dct is an 8 or 900 buck job tops plus your part lol doesnt equal close to 2k let alone 3 and 4k and better still this may not even fix it lol


Put a new box in for the same money and 100% fix it.

If you read through the thread you’d see it was at a reputable independent first. Didn’t work out too well

Also it’s a gearbox out job, not just a drain plug. Significantly more complicated.

Originally Posted by juld0zer

Most of the cost is in the labour and oil.

But getting the box out/in is not that difficult. A conventional auto or a transaxle R&R is only slightly more involved.

Most independent shops wouldn't have the tool to suspend the gearbox and hold it so the input shaft faces up. Yes you could stand it up on the donut or output shaft but they'd be paying out of their grave if it fell and cracked.

That oils a killer!!

Originally Posted by Aus335iguy

Bit cheaper than a new one but not by much... what's happened mate ? Any luck?

https://rover.ebay.com/rover/0/0/0?m...2F322877962901

Think it was mentioned earlier the M3 tcu might be the same part number but had a connector in a different spot and so doesn’t fit without modification. Unless I imagined it!!