[twodogs]

seems to be a quirk with this particular box. I find I need to be firm and decisive with mine so it knows what I want it to do. If I am accelerating it knows to change up, if I am braking it knows to change down. When pottering about, or slowly descending a slope it can get confused, starting to change down, then changing its mind with the resulting jerk. The problem is, if you are in second and the car changes down to first, it is then impossible to get to third without going back through second gear. What I find it doesn't like is uphill over speedbumps at slow speed.

 

[twodogs]

Any of those four - check your fault codes to narrow it down. I had same problem and it was cured by a trip to Renault and reprogramming of the box (after all contacts were checked of course). My fault code was Clutch 1 fault - which it clearly wasn't

 

[twodogs]

Have you tried everything else first? I haven't seen a single post that has had success with a new solenoid. Here's another one
captur 2014 transmission error is DF490 clutch 2 electrical circuit fault - MHH AUTO - Page 1
is there a stored fault code?

 

[twodogs]

OK, first, the EDC box doesn't have a torque converter. It has two clutches (operated by solenoids). Other solenoids are used to operate the gear selections. Since the car has not been used for a while I have to ask what state is the car battery in? How old is it? First thing I would do is to disconnect the battery earth -ve lead (or remove it) and charge it fully overnight (make sure you have your radio code). Before doing this turn everything off, open the bonnet/hood and walk away for fifteen minutes for everything to shut down properly. Charge it fully - if it is more than 5 years old I would change it anyway, or at least borrow a good one. Don't need to waste too much money on parts yet. When reconnected (might need to re-initialise windows) see if the problem is still there. There is no harm in trying to clear the codes (once) to see if they come back. Depending on the reader, and as generic codes, they are not very helpful but I found that clearing the clutch codes resolved the issue for me, albeit temporarily. This was enough to tell me that there wasn't a catastrophic mechanical failure anywhere.

As said above, the battery could be the problem if it has been left unused for five months. Even more so if it is old. And Renaults don't like bad batteries. If all the above fails, I would get someone to check/clean all the external electrical connections to the box (including ECU).

You say reverse does not work - what happens when you engage it? I'm guessing the box won't change up to second gear either. What about in manual mode - can you force a change to third?

I went though all this. Having the box software (fuzzy logic) reprogrammed solved everything for me. That would be the next step but needs a Renault technician who understands what is going on - and these are not cheap, but not as costly as a gearbox repair.

 

[twodogs]

Thanks for letting us know, and glad you got it sorted. At least you know the gearbox is sound mechanically. If it happens again it is almost certainly an intermittent electrical or software issue. 900€ seems expensive for a timing belt replacement, even in Sweden. Not too difficult a job if you have the right equipment. Access around the engine is not good but's that is more than twice what it cost me for the same car.

 

[twodogs]

No, not easy unfortunately. I had my local garage do it. You can't get to anything on the Scenic without taking other bits off first. Sorry to hear that.

 

[twodogs]

Software update was done by Renault in Lagos.

 

[twodogs]

I think Darki has disappeared but my car was exactly the same as yours. OK, you haven't declared any fault codes but I am 80-90% sure the gearbox is still mechanically sound. The problem will either be: a bad battery or charging system; a poor electrical connection to the box ecu; ecu software update needed; ecu replacement. The first two can be checked by any decent mechanic. The last two will need a Renault technician ( a new ecu is only two or three hundred euros). If the technician says straight away you need a new box, find a new garage. I am on my second car with the EDC box and I am about to buy a third. They are good boxes mechanically, only suffering from electrobugs, voltage drops and software.
Let us know how you get on. I would stake my old age pension on one of the above (unless of course your gearbox is making terrible crunching noises already).

 

[twodogs]

So the problem is not permanent. For intermittent fault I would suspect electrical connection or low voltage. How old is car battery? Is it well charged? It is also possible that a sensor (throttle position etc?) is sending an erratic signal. Car electronics are too complicated but, as you say, the problem is not there all the time. This tells me that the gearbox still works ok when it wants to.

 

[twodogs]

You perfectly described the issue my Clio EDC is experiencing! It's fine when cold but after 20 mins of driving it throws the warning and I can't get into 2,4,6,R. I'm pretty sure it either needs a new TCU or clutch. Could you please let me know how you ending up resolving it?? Hope to hear from you soon.

The answers are here, somewhere. The gearbox works fine for 20 minutes. That effectively rules out mechanical failure. The control system is all electronic so the likely suspects are voltage (battery, connections, wiring), software (update, reset, calibration) or TCU. The last item will most likely require a software calibration at the same time. Have you read the codes? It will probably read "Clutch 2 failure" or something similar. I also found that resetting them gave me some extra time, even when hot. For me, a software update was all that was needed.

 

[twodogs]

Seems you have covered all the bases. A TCU is only a few hundred euros. 3k sounds like a lot. As for longevity, 125,000km would be a good life for a standard manual box clutch. I would expect the EDC clutches to last longer but how much, anyone's guess. A software update can recalibrate the clutch for wear (mine was at 90k) but you have already covered this. I'm on my third car with an EDC box and I love it. It's a bit quirky when it tries to think ahead and gets it wrong. I can't recall anyone on this forum needing a clutch replaced.

 

[twodogs]

Hi, I have a Renault Clio 1.2TCe(120ps) GT Line 5d 1197cc EDC auto. The car doesn’t reverse when the engine warms up. I took it to the garage and the code comes up as DF 490 clutch 2 motor circuit but can’t fix it. Does someone knows what it could be?

All possible solutions are in this thread. Can't think of anything else.