Pajo16

Hi coopster, did you manage to get this issue resolved? I have the exact same issue and the exact same history of water ingress into the passenger footwell. Yesterday, I removed the 'Number Plate Light Carrier and Lock Switch Škoda 3B5827297D' and checked the switch on there. It is technically working, a multimeter shows continuity when the switch is pressed, but the lid still does not open!! I'm concerned I have water ingress again 😞 Appreciate any feedback.

I had this issue when I had water ingress into the passenger footwell. There is a sticky on the forum here about how to check / repair.

So I believe that I have resolved ALL the issues are now resolved. From the original list: Cruise control will turn off after 1 - 3 minutes - Fixed. Interior light will not come on after opening either passenger or driver door. - Fixed. The image of the car in the red dot matrix display will show driver door opening but not passenger door. - Fixed with need front passenger door lock (£20). Air conditioning cuts in / out. - Fixed. Using window controls on the driver side the drivers window goes up and down fine but the other three 'stutter' up and down. - Fixed. Using the window control on the front passenger side the passenger will go up and down smoothly. The Radio station in the red dot matrix display cuts in and out intermittently. - Fixed Locking the car from inside, or outside using the key fob, the passenger door button pops back up after initially going down. - Fixed with need front passenger door lock (£20). The car battery dies within 12 hours - I tried four new batteries there all act the same ( I have access to new batteries ) - Fixed. The issues above marked as 'Fixed', were fixed by replacing the splices in the rear passenger footwell (directly behind the front passenger). This is where it gets interesting. I had little to no corrosion in the splices in the from passenger front footwell, however, in the rear footwell, the four splices were completely rotten. Here are some pictures of what I found back there: https://goo.gl/photos/3oazcsTpACZUqfxi6 Please note I had to remove the front passenger seat which is wired to the airbag. I disconnected the battery 30 minutes before that, but if you decide to disconnect the seat wires you need to research how long to leave the battery disconnected to ensure your safety. Also, I found out that I have puddle lights!!, and lights in the steering wheel showing the cruise and radio controls. Can I also highly recommend the ODBeleven for quick analysis of the faults present. I see a lot of posts about VCDS, I have never used that, but the ODBeleven seems to do what I need. Thanks for everyone's help with this. Looking back now I should have posted in the sticky at the top of this forum. I hope the pictures help others. PS, I used grit 2000 sandpaper to clean off the black off the copper wire on the twisted pair CAN. Finally where I did cut back the twisted pairs I paired then back equality to preserving CAN signal.

Thank you for the great advice. I purchased SHELL TIXOPHALTE WET SEAL & FIX SEALANT 310ML on Amazon. I will strip back the door and apply this weekend. I found a good video on YouTube that shows how to apply it correctly.

Thankfully I don't have a sunroof! I fitted the new front passenger door lock and the indicator on the dot matrix showed the door open and closed correctly. A small win. So far the eBay lock seems to work fine. It's on the passenger door so not used very often; may take some time on my car to get fully tested.

Thank you for the four advice, yes I've read that thread numerous times, amongst many others. Where I went wrong, or whatI didn't realise was that it is possessible to have little/no corrosion in the front passenger footwell but have complete electrical failure in the rear passenger footwell.

I did some testing during the week; after disconnecting the loom to the passenger door the voltage across the CCM no longer jumps around when the car is locked up. There is a completely boring video here: https://goo.gl/photos/t2xTmdeft48qNxMt9 The multimeter was inside on the passenger seat and I was outside in the cold recording through the passenger window. I decided to purchase a door lock and try to fit it before I start my next test - parasitic drain!! Here are some pics of the door lock (£18:99 on eBay): https://goo.gl/photos/kREUDRE75Go9uyZd7 Look at this on eBay http://www.ebay.co.uk/itm/151326094718

Ken, thanks for the info. I will look into the sensor issue and see what I can find on here. Bridgerectifier, thanks for the recommendation. I, in my (in)finite wisdom, was stuck so I grabbed my silicone gun, stripped the cabin filter housing down and replaced the original idiotic seal with silicone. That was last weekend. One week later and the dot matrix display does not flicker 'as much'. I have the passenger carpet propped up so it can dry out. One week later and it's not dry yet; I understand it's winter but I drive everyday with full heat!!! PS. I plan to replace the seal on the other side too, the one that protects the engine ECM.

If I am correct, the rocker switch in the front centre head lining (over the rear view mirror) should be in the middle position to be activated by an open door, i.e. pushing down fully on the right side switches off, and down fully on the left turns on the light irrelative of the door being open or closed. The print on the switch reflects that to some degree. The AC will run for 3-5 seconds, stop or for 3-5 seconds, and repeat this cycle. Those is my first Skoda so cannot say whether those is normal or not (I have access to another but the AC doesn't work).

After trying to figure out why, among many electrical issues with my Superb, the interior light does not come on when the door is opened, I discovered water in the passenger foot-well last Saturday. https://goo.gl/photos/H5aXjibx2Qo1vMya7 I lifted the carpet and found that the box containing CCM was floating on the water in the foot-well. I opened the box, and although it was not wet it was damp. I reviewed the connectors and there are clean and not corroded. I found the front bulkhead containing 8 - 10 L of water. Both drain holes in the front bulkhead were filled with silt/mud. The car does not have a sun roof. https://goo.gl/photos/JiRcH7LtzVhMNTiP8 I have opened the harness under the passenger carpet in the foot-well and removed the insulation from the factory splices. Generally, there was very little corrosion at the factory splices. The photos are not very good unfortunately. https://goo.gl/photos/PTAsG7P1eKPcuD9a7 I have removed the factory splices and re-spliced using solder, however, the issues my electrics remain. Here is a selection of issues faced with the car: Cruise control will turn off after 1 - 3 minutes Interior light will not come on after opening either passenger or driver door. The image of the car in the red dot matrix display will show driver door opening but not passenger door. Air conditioning cuts in / out. Using window controls on the driver side the drivers window goes up and down fine but the other three 'stutter' up and down. Using the window control on the front passenger side the passenger will go up and down smoothly. The Radio station in the red dot matrix display cuts in and out intermittently. Locking the car from inside, or outside using the key fob, the passenger door button pops back up after initially going down. The car battery dies within 12 hours - I tried four new batteries there all act the same ( I have access to new batteries :sun: ) I bought an OBDeleven device and here is a sample scan: OBDeleven data log Date: 2016-11-20 19:29 VIN: TMBCC63U289013586 Car: Skoda Superb Year: 2008 Engine: BPZ Mileage: 225060 KM --------------------------------------------------------------- 01 Engine Control Module 1 System description: R4 1,9L EDC G000SG Software version: 1159 Hardware number: 03G906016MC Serial number: SKZ7Z0G4519344 Coding: 0000071 Trouble codes: P0671 - Cylinder 1 Glow Plug Circuit static P0673 - Cylinder 3 Glow Plug Circuit static P1635 - Databus drivetrain missing message from A/C control module Intermittent --------------------------------------------------------------- 03 Brakes 1 System description: ABS/ASR 5.3 FRONT D00 Software number: 3B0614111 Coding: 00012 Trouble codes: No trouble codes found --------------------------------------------------------------- 08 Air Conditioning System description: CLIMATRONIC S B5 C 2004 Software number: 3U0907044A Coding: 17000 Trouble codes: 00532 - Supply voltage Signal too low Intermittent 01336 - Combination Comfort databus In single wire mode static --------------------------------------------------------------- 15 Airbag System description: 0D AIRBAG VW61 0K 0004 Software number: 1C0909605F Coding: 12356 Trouble codes: 00532 - Supply voltage Signal too low Intermittent --------------------------------------------------------------- 16 Steering Column Electronics System description: Lenkradelektronik 0002 Software number: 3U0907487A Coding: 00001 Trouble codes: 01336 - Combination Comfort databus In single wire mode static 01341 - Control module in instrument cluster at comfort CAN No communication Intermittent 00926 - Terminal 30 Signal too low Intermittent --------------------------------------------------------------- 17 Dash Board System description: KOMBI+WEGFAHRSP VDO V06 Software number: 3U0920842D Coding: 31115 Trouble codes: 01336 - Combination Comfort databus Faulty Intermittent 01336 - Combination Comfort databus No communication Intermittent 01336 - Combination Comfort databus In single wire mode Intermittent 01330 - Comfort system central control module No communication Intermittent 01304 - Radio No communication Intermittent --------------------------------------------------------------- 19 Gateway System description: Gateway K<->CAN 0001 Software number: 6N0909901 Coding: 00006 Trouble codes: 01336 - Combination Comfort databus Faulty Intermittent 01336 - Combination Comfort databus No communication Intermittent 01336 - Combination Comfort databus In single wire mode Intermittent 01330 - Comfort system central control module No communication Intermittent 01304 - Radio No communication Intermittent 01320 - Climatronic control module No communication Intermittent 01331 - Driver side door control module No communication Intermittent 01332 - Frt.pass. side door control module No communication Intermittent 01333 - Left rear door control module No communication Intermittent 01334 - Right rear door ctrl. module No communication Intermittent 00463 - Digital Sound System Control Module No communication Intermittent 01303 - Telephone transceiver No communication static --------------------------------------------------------------- 25 Immobilizer System description: Adresse 17 eingeben Software number: Bitte Trouble codes: No trouble codes found --------------------------------------------------------------- 46 Central Module Comfort System System description: H9 Komfortgerát HLO 0004 Software number: 1C0959799B Coding: 00259 Trouble codes: 01330 - Comfort system central control module Voltage supply too low Intermittent 01336 - Combination Comfort databus In single wire mode Intermittent 01336 - Combination Comfort databus Faulty static 01334 - Right rear door ctrl. module No communication Intermittent 01333 - Left rear door control module No communication Intermittent 01332 - Frt.pass. side door control module No communication Intermittent 01331 - Driver side door control module No communication Intermittent 01331 - Driver side door control module No communication static 01332 - Frt.pass. side door control module No communication static 01333 - Left rear door control module No communication static 01333 - Left rear door control module Voltage supply too low Intermittent --------------------------------------------------------------- 56 Radio System description: Radio DE2 Software version: 0015 Hardware number: 1U0035195C Coding: 0000025 Trouble codes: 01317 - Instrument cluster control module No signal/communication Intermittent 00849 - S-contact at ignition starter switch No signal/communication Intermittent 01064 - Terminal 58d interior light dimmer No signal/communication Intermittent 00625 - Speed signal No signal/communication Intermittent 01336 - Combination Comfort databus No signal/communication Intermittent --------------------------------------------------------------- I also took the front passenger door panel off to continuity check the wiring back into the passenger foot-well; all appear to be connected correctly. I also removed the door lock (3B2 837 015 L) while I was there and checked the three micro-switches; all appeared to work correctly. https://goo.gl/photos/gRBeryJoo3HG4PeLA So my questions are: 1. Can I. assuming my CCM is half-dead, buy another from a breakers yard, with code 1C0959799B, and simply connect it up? If I need to re-code can I use OBDeleven device? 2. Why is the Air Conditioning showing 10.5 V when the car battery is 13.8 V ? See this image: https://goo.gl/photos/WoGGEgmEMr362aEa9 3. Should I take out the front passenger seat and lift the carpet to check the harness all the way back into the rear foot-well? 4. Why am I switching between dual wire and single wire 40 times in 60 seconds? See this image: https://goo.gl/photos/6eyZARWcGcyy2EWq7 I'll leave you with this: https://goo.gl/photos/M68oLUjWd7t44A8Z8 ...and this bucket of pictures: https://goo.gl/photos/hEfAoKaDyF6Rp5Wu5 I appreciate any help, Patrick.

I bought a new drivers door barrel from the main dealer in Belfast. The barrel cost £35.30, took two weeks to arrive from Czech republic. Just a note on fitting, the top T20 Torx was opened only 4.5 turns and the bottom T20 Tora was opened 13.5 turns, that way you don't loose the screws in the door. Photos: https://goo.gl/photos/2ToW4Z6iEHDxbmHh9

Thanks a million for you help folks. Based on t g e comments above I will order a new lock barrel / lock cylinder from my local dealer. The current lock barrel / lock cylinder is from a scrap yard, works fine, but two keys is frustrating.