MC Shift gearbox ECU

Steve4200

Member
Messages
196
@Steve4200 - So, just spoke to them and they claim that when they swapped the TCU in my car for another 2010 MCS it started up, and the other car didn't. Swapped them back and the reverse happened.

They said they are unable to write any values to my TCU which is why the readings are all wrong in the diagnostic, and why it won't start.

At a bit of a loss now, best bet may be to find a used TCU if possible.
What diagnostic tool are they using?
 

ensignia

Member
Messages
109
What diagnostic tool are they using?

Not sure, think it might be Leonardo. I don't think they have SD3 as when I mentioned it (6 months ago!) the garage said they use something else which is just as comprehensive.

If it's the place I'm thinking of then they are utter crooks. We're not that far away and I'd be happy to try and fit you in if you want a second opinion.

PM sent.

offers of help like this are why we all love this forum

Yep, this place is invaluable and people really do go the extra mile.
 

Felonious Crud

Administrator
Staff member
Messages
21,190
Aldous Voice has a particularly good rep. If things don't work out with your current plan, I'd take him up on his offer.
I'd be inclined to take him up on it anyway. There are few outfits to which I'd be happy entrusting my pride and joy, and Voicey is half of them. The other half is in Eastleigh.

To be clear, my other half is not in Eastleigh. Well, not as far as I know. If she was, I could be pretty sure she'd arrive home eventually but hungover, bedraggled and deranged.
 

StuartW

Member
Messages
9,317
Mine, believe it if not came down to a failing wheel bearing. No lights, drove perfect but with random gear drops at high rpm. The bearing finally failed about 18 months later and was replaced and the gear issue was gone.

When Craig, the previous owner of my Stradale, was in Spain earlier this year, he had dropouts from 6th to neutral which then cleared, with no warning, no lights coming on and then no reocurence. He took it a MD in Spain who ran a diagnostic with nothing really showing up. It was then plugged in at Graypaul Nottingham when he was home, and again nothing. When I bought it and it was with Aldous @ AV, he also ran a diagnostic with nothing showing.
A couple of months later, I had all of the warning lights and low & behold, a wheel bearing (the sensor inside) failure, the common o/s/f.
 

Steve4200

Member
Messages
196
Steve is in Friday to test your ecu,
Tests complete :-

The standing fault code P1768 Fast Gear Change Calibration not carried out confirmed on EasyMAS and Leonardo.

The ECU is commanding “No Gear Available“

The ECU responds to inputs and drives outputs.

The ECU accepts write commands.


So this could be down to the ECU being set with incorrect values from another diagnostic tool, the New Closed Clutch Position was set to 0.00 mm which is completely way off. Not sure what other setups / writes had been attempted?

Or the ECU is the problem but assume it was okay when the vehicle arrived at the garage in question?

Suggest trying to relearn the gearbox parameters on the old ECU when back in the vehicle. Do not use the same diagnostic system !! If you do, the same could happen and also to a new ECU !!

Matt has the ECU at SI.

Regards
Steve
 
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ensignia

Member
Messages
109
God, don't really know what to do now. I don't trust them to get to the bottom of this, but short of having it trailered to Voicey or SI I reckon I'm a bit stuck.

Garage is saying that a new TCU will sort everything and is offering to go halves on cost (as it can't be returned apparently :rolleyes: ).
 

Scaf

Member
Messages
6,587
A new one may well fix it (if it is set correctly) but the issue you have is that the old one may well fix it once it’s correctly set up - I would trailer it, but it is a difficult situation and Catman may well be onto something.
 

conaero

Forum Owner
Messages
34,632
The problem is, if you trailer it to us or Voicey that garage then inherits the problem.

I’m not say no, it just needs to be understood.
 
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Gazcw

Member
Messages
7,785
Would going halves on the ecu but getting aomeone else to flash it be a way forward?
 

ensignia

Member
Messages
109
A new one may well fix it (if it is set correctly) but the issue you have is that the old one may well fix it once it’s correctly set up - I would trailer it, but it is a difficult situation and Catman may well be onto something.
True, but there's no way of knowing if the old one is fine and the garage are just incompetent.

The problem is, if you trailer it to us or Voicey that garage then inherits the problem.

I’m not say no, it just needs to be understood.
Again, true, but I feel like a half decent garage wouldn't have any problem sorting it.

Would going halves on the ecu but getting aomeone else to flash it be a way forward?
Does the car not have to be present when writing to the TCU?

Could you not swap/borrow an TCU from another car and see if it fixes it?

That would be the litmus test, but it's not as easy as a simple plug and play swap I don't think.

In any case, I've told the garage to go ahead and use the new TCU for which I will contribute half - hopefully this will be the end of it and I get my car back, but something tells me that won't be the case.
 

Steve4200

Member
Messages
196
True, but there's no way of knowing if the old one is fine and the garage are just incompetent.


Again, true, but I feel like a half decent garage wouldn't have any problem sorting it.


Does the car not have to be present when writing to the TCU?



That would be the litmus test, but it's not as easy as a simple plug and play swap I don't think.

In any case, I've told the garage to go ahead and use the new TCU for which I will contribute half - hopefully this will be the end of it and I get my car back, but something tells me that won't be the case.
Good luck, if you end up not using the old ECU don‘t bin it - I could put it to good use.

Regards