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Discussion Starter #1 (Edited)
So..........
Yesterday I pull up to a junction, as I attempt to pull away the car just revs with no drive. I knock the lever to D and back again to '1' and pull away with no further issue and get home 20 mins later. No warnings but I did think I bet this is the start of something.

This morning out for about 20 mins, no worries. This afternoon 10 mins into my journey I get yellow cog, then red, then no warnings for a minute or so, then a repeat, getting worse, of red, yellow, back to normal, red, yellow, back to normal. I stop for 5 mins, start back up and all ok for a while then back again to red, yellow etc etc. when in red/yellow gearbox is clunking, banging and defaulting to D mode, sometimes letting me change out back into manual. For periods during the drive home all was normal, no warnings, no lights, changing gear fine.

Anyway....I haven't panicked. Nursed her home and booted up you guys!!!! A search of many threads reveals (fingers crossed) it could be the clutch position sensor and nothing more sinister. I am on 60k with original clutch so maybe in the window of failures?
I will obviously attempt to get the codes and post them on here but my initial question to you all is whether my quick prognosis is in the right area, given the symptoms described. I just went outside after 3 hours. SMG pump primed on unlock, she started and drove around the block (40 secs of driving) with nothing untoward happening.

I am warranted but know they will argue like mad so dreading any contact with them.

One wierd thing that did happen was it also pinged up that I'm 5k over a brake fluid change, 5k with no prior warning!!!!! I have no idea what that is all about and will treat as glitch i.e unrelated to the clutch issue...........unless the brakes and clutch are on the same hydrolic system.........?

Forgot to add....I am gutted and feel sick but at least the sun is out!
 

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Discussion Starter #2
Some further info....

I went outside, just to stare at the car and think 'how much £' when I noticed 4 or 5 very thin, long fluid stains on the floor. I have to back in and out of my driveway 2 different ways. The stains arch in from when I'm returning home not leaving so there is a fluid leak from somewhere near the centre of the car but not when cold and leaving home....so the plot thickens! Perhaps related to my woes. I will investigate further and update.
 

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Slave cylinder seal blowout. Cheap parts, no so cheap labor as the trans has to be dropped. If you look under the car, there is a small drain home at the 6 o'clock position where the transmission meets the engine block. I this is where the oil is coming from, it's the slave.


Sent from AutoGuide.com Free App
 

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Ben, I'm very sorry to hear this.
I think the best thing to do would be to call up someone local to read the code for you and see what's what and hear what the technician says.
I have absolutely no idea of what the problem could be but given the symptoms (as serious as it sounds) it should be a straight forward warranty job.
I know your car's kept in good condition and doesn't have any silly mods like mine does.ouich
Seriously, I wouldn't worry too much. Please let us know how it goes. Fingers crossed!!!!!!!!!!!

:cheers:
John
 

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Strange... and its not like the car has been driven hard. I know for a fact you've never done over 68 mph....

check the warranty on seals. I remember one i had didn't cover seals unless something mechanical failed as a result of the seal going... if thats the case, drive over to me and we'll look it up : 0.
 

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Discussion Starter #6
Strange... and its not like the car has been driven hard. I know for a fact you've never done over 68 mph....

check the warranty on seals. I remember one i had didn't cover seals unless something mechanical failed as a result of the seal going... if thats the case, drive over to me and we'll look it up : 0.[/QUOTE]

Thanks for the positive words of encouragement, just what I needed, don't give up the day job!! LOL.
 

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I had all the same issues (exactly)was a line from the smg pump or the fitting for the line. The pump was pressurizing etc etc.
Never saw the fluid till the car was pulled up onto the flat bed. Then it poured out. Wasn't expensive, dropping the tranny was.
 

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Discussion Starter #8
Many thanks all for the comments so far. I have arranged to get the codes read tomorrow evening so I will update once I have them.
If it is a line/seal leak is it safe to assume that it would be sensible to have the clutch changed as well, seeing as the gearbox will be off but perhaps ok to keep existing SMG pump and (some) other related parts? I suppose I'll know once it's inspected.

Again, thanks for the time in assisting.
 

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Sorry to hear that Ben,

Hope you get it fixed soon mate. Once you pull the codes, if it was me I would follow / listen to anything that jcolley (Jim) says, as there is no better when it comes to the SMG box in my option.

Pete
 

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Discussion Starter #10
2 separate people, 2 different laptops, about 30 attempts and all we got was "No response from control unit". I give up.

So as I was going to have to do anyway, I've booked it in to a local Indy specialist at their earliest slot, 18th June, that means no beast for just over 2 weeks but it will give me time to arrange flatbeding it there and have numerous arguments with the warranty company! If I can arrange to get the codes read between now and then I'll post them.
 

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Discussion Starter #12
So a quick update. Initially whichever system the chap was using wouldn't talk to my car...again. Apart from one ECU, see image below. He is coming back either tomorrow or Thursday to try something else, I'll update then.
 

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Discussion Starter #13
AN UPDATE - with codes, opinion/comments very welcome.

Email from the garage..........

5101 SMG: Hydraulic pressure sensor - Hydraulic pressure sensor outside measurement range - Fault currently not present.

4FA0 SMG: Clutch (activation, position deviation) - Clutch activation: total voltage implausible - Fault currently not present.
Clutch B2360_S3KUP
Calculate accumulator prepressurizing pressure S2360 S3TFK

510D SMG: PLCD sensor, clutch position - Clutch position sensor (main sensor), signal below threshold.

510E SMG: PLCD sensor, clutch position, redundant - Clutch position sensor (redundant sensor), ground break.
PLCD sensor B2360_S3PLC


I haven't yet delved into those in greater detail.
Although I suggest we do get more info from them (for example I know from the M3 SMGII that the PLCD sensor is a position sensor integral inside the Slave Cylinder).
 

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AN UPDATE - with codes, opinion/comments very welcome.

Email from the garage..........

5101 SMG: Hydraulic pressure sensor - Hydraulic pressure sensor outside measurement range - Fault currently not present.

4FA0 SMG: Clutch (activation, position deviation) - Clutch activation: total voltage implausible - Fault currently not present.
Clutch B2360_S3KUP
Calculate accumulator prepressurizing pressure S2360 S3TFK

510D SMG: PLCD sensor, clutch position - Clutch position sensor (main sensor), signal below threshold.

510E SMG: PLCD sensor, clutch position, redundant - Clutch position sensor (redundant sensor), ground break.
PLCD sensor B2360_S3PLC


I haven't yet delved into those in greater detail.
Although I suggest we do get more info from them (for example I know from the M3 SMGII that the PLCD sensor is a position sensor integral inside the Slave Cylinder).
Ben,

Rather than replay by email, I figured I would post here for everyones benefit.

As you know, I had the exact same fault codes for a week now. 4FA0, 5101, 510D and 510E. The PLCD, pressure sensor, and temperature sensors all share a common wire harness, so at first I suspected the harness and connector. After removing and inspecting it and driving out again, the errors all returned.

I replaced the PLCD this morning. This took 2.5 hours following TIS almost exactly to the letter. The only exception I made was instead of removing the bolts that hold the driveshaft to the transmission, I removed the driveshaft center brace. This allowed the driveshaft to move down as needed so the transmission can be pivoted down for access to the PLCD. The transmission doesn't come out!.

So, after replacing the $335 sensor, the SMG was happy for a rip up and down the freeway with no error codes at all. Previously, I couldn't even idle in the garage without tripping them, regardless of the number of times they were reset.

Hope this fixes up your SMG, good luck with the other bit as well.


Edit: Forgot to add, adaptation must be performed with the new PLCD as the sensed return values may differ slightly from the old one.
 

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I am in the same situation, I haven't had codes read yet but the way it happened is exactly the same.

Mines at Oxford BMW as I needed to have the car recovered by BMW assist fromfrance, I'm hoping the waranty will cover it.

Hope you have a good result!
 

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Discussion Starter #16
A quick update.

The PLCD sensor has been replaced and after a couple of short drives it would appear it has resolved my SMG issues. In fact the new sensor coupled with a gearbox oil change seems to have made the SMG better than it's ever been.

Particular thanks must go to Jim C for his assistance, concise emails from him allowed me to direct the garage in the best route and probably saved me lots of ££££££££.

I owe you dinner Jim!

My Rod Bearings are getting changed in 2 weeks and then I should be back on the road.
 
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