Andyrob Posted April 14 Report Share Posted April 14 Help please. Blocked drains cleared. Use my cover now... rear controller swapped and coded. Roof just dead. Fuses ok, roof switch ok i think. My icarsoft gives me c121 comm rear control unit (comfort). Windows don't drop either?? I'm Bromley area. Quote Link to comment Share on other sites More sharing options...
Paul P Posted April 14 Report Share Posted April 14 (edited) Random thoughts. Who coded the module ? has it worked since the module was replaced ? Is that c121 code “active” or “stored” ( if you clear it does it come back ?) does the spoiler raise/lower on the button ? try poking the area around where the roof latch sits There is a micro switch in there that starts the window drop process Wd40 might help but the coding on the module has the same symptom from memory that sounds a bit like the new module hasn’t got the “new mechanism” config set for the roof. I am near Rochester Kent, I have PIWIS, can plug in and have a look if you want to come find me. Edited April 15 by Paul P 2 Quote Link to comment Share on other sites More sharing options...
TROOPER88 Posted April 14 Report Share Posted April 14 24 minutes ago, Andyrob said: Help please. Blocked drains cleared. Use my cover now... rear controller swapped and coded. Roof just dead. Fuses ok, roof switch ok i think. My icarsoft gives me c121 comm rear control unit (comfort). Windows don't drop either?? I'm Bromley area. Needs to be plugged into PIWIS or Durametric. If an indy coded it, I would hazard a guess that it has been coded to the wrong vehicle type. I have worked on a few 87's where myself and other Indys have coded the module to a Cayman. This allows the windows to close etc until the problems can be fixed. Quote Link to comment Share on other sites More sharing options...
phazed Posted April 14 Report Share Posted April 14 Did you actually buy a new under the passenger seat module from Porsche? Quote Link to comment Share on other sites More sharing options...
Andyrob Posted April 16 Author Report Share Posted April 16 Hi All, Yes I got another RCU and had it re-coded as per the images below. The chap who re-coded it (Ian @ MDB diagnostics Colchester) said that although its ok - everything else works fine there can be problems with the roof that prevent even the windows dropping as they did before when you unlock the front catch. I exposed the switch underneath the catch as I know there can be problems with that but that didn't help. My next item to check is the relays just in case they've failed. Fuses were fine. I've seen a video on how to manually open the roof by disconnecting the control rods but I'll save that till later. Regards, Andy. Quote Link to comment Share on other sites More sharing options...
Paul P Posted April 16 Report Share Posted April 16 On the face of it - that coding looks OK to me ( we have had a case of something odd happening with an RCU supplied and coded by the same folks - but in that case the "new" hood control setting wasn't there at all - and they did sort it out.) I notice that the rear lights are set to LED ? Should not have any impact but is this a gen 2 (2009->) car - just interested to know if the previous gen 1 cars can be coded to have led rears ? Seen a few references to the tracks on the switch needing to be resoldered, few threads on here (somewhere) showing the process - perhaps its not the switch but the "pathways" Quote Link to comment Share on other sites More sharing options...
entdgc Posted April 17 Report Share Posted April 17 17 hours ago, Paul P said: Seen a few references to the tracks on the switch needing to be resoldered, few threads on here (somewhere) showing the process - perhaps its not the switch but the "pathways" Yes I had to do mine. I think the solder joint between the tracks and the contacts go 'dry' and you get poor connection. I just heated mine up to melt the solder again and it has been fine since then but I suspect it will go again in the future. 1 Quote Link to comment Share on other sites More sharing options...
nelmo Posted April 17 Report Share Posted April 17 I had a similar roof problem and just replaced the roof switch (£75). Very easy job, several YT vids on how to - might be worth a shot? Quote Link to comment Share on other sites More sharing options...
Andyrob Posted April 20 Author Report Share Posted April 20 Cheers guys, i'll have a look at the switch more closely. Quote Link to comment Share on other sites More sharing options...
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