Electrical relay problems (Help & Advice Please)

[sealover1]

Hi Guys,

 

Car broke down again and again points to electrical or relay problems, the RAC guy said it was coming from this relay box (see photo) but its intermittent and I'm really not sure what to do next.

 

New Box or will used box help as per money is strapped being on a low income if a new box does anyone know the correct name for this box or the part number please? should I buy new relays? 

 

and best of all does this box just unplug

 

If anyone can help I'd be really grateful.

 

make and name of car is in my signature 

.

  

[Guest]

You can check/clean the relay contacts as you would with old style mechanical points ignition, obviously you don't need to set the gap though.

 

Just check both the relay pins and socket are clean and good fitting, prise the cover off and inspect for burned/pitted contacts.

 

You could also try tapping the relays one by one in situ with the handle of a screwdriver to see if you can provoke a failure when the engine is running or get it to start when failed.

 

I recall you've not had much luck with this car, to further diagnose - do you lose some or all electrics?

 

Presumably a scan didn't suggest any issue with the ignition key transponder which may be intermittent and causing engine to cut... just thinking aloud.

[sealover1]

well when it broke down it said OIL when he done a scan it said glow plugs then he reset everything and all the lights have gone off now, he just said the problem lies when he moves this relay box about but its very Intermittent,

 

I could take out all the relays and clean them and spray some contact cleaner (WD40) in the connectors

 

 prise the cover off ? is the cover not off then? 

 

yea had loads of problems with this car but mainly now all electrical a scan seems pointless as soon as the electrical thing happens something else will say its wrong, when it does drive though she drives really sweet  

Edited 28 March, 2021 by sealover1

[Guest]

Remove each relay to open it up for inspection.

[sealover1]

is WD40 a good cleaner to spray in the relay slots?

[Guest]

For an internal application in an area possibly being further investigated it's not ideal as it leaves an oily mess although the solvent flushing action of the spray will clean to an extent.

 

If the relay blades look clean and bright try blowing the sockets clean with air and reinserting the relay several times to remove any connection oxidation.

[sealover1]

I bought some WD-40 Specialist Fast Drying Contact Cleaner with Smart Straw 400ml cant do no harm and not oily like standard WD40

[Guest]

7 minutes ago, sealover1 said:

I bought some WD-40 Specialist Fast Drying Contact Cleaner with Smart Straw 400ml cant do no harm and not oily like standard WD40

 

You didn't specify that.

[sealover1]

No I never heard of it MicMac so thought got be worth a go as WD does have a good rep,

 

electrics is the last problem that keeps going wrong on my car I wish there was a fair priced place I could take it where they would go right through it,  spent loads trying to keep my Skoda running well cuz I do love the car, just as well I only paid cheap for it even though it had full service history, cuz it left me with some to spend on bits but Jesus I never expected this much lol 

[sealover1]

MicMac do you know if there is a plug that that relay box plugs into that I could clean out

[sealover1]

does anyone have a photo of 1 of these taken out or the name of the relay box?

[Breezy_Pete]

I think you'll find that that relay holder just has a mass of loom wiring going directly into the back of it.  Stick your phone in behind it and take a flash photo.

[sealover1]

No taking it out then :(

[Breezy_Pete]

I dunno, you'll have to look/feel to see if it's anything more than just a panel full of relay sockets.  Won't it be one of the relays that's plugged into it that's misbehaving, rather then anything else? 

[sealover1]

I dont know the RAC guy said when he moved the box about it played up all I can do is clean all the relays and sockets really if I can feel a plug in the back give that a clean

[sealover1]

Hi Guys been doing a bit of research and found 1 that looks the same as mine though it dont seem to include the top relays so might be 2 separate boxes. They seem to be plug and play what do you guys think?

 

New ones are nearly £600 used from ebay about £20-30 but going to try using contact cleaner 1st

 

 

Posting photos of them so if anyone else has to replace them you will know what to look for at least lol

 

The names that it seems to identify the main relay box is : ONBOARD SUPPLY CONTROL MODULE or Skoda Octavia Mk2 1Z 2007 Comfort convenience module.

 

Photos 

Edited 29 March, 2021 by sealover1

[Eddie-NL]

The actual name for it is CECM Central Electronics Control Module

You can also find it in a host of VAG cars 2004 - 2009 Mk5 Golf, Early Tiguans, Scirocco

 

Some relays are controlled elsewhere.

You need to scan the car and try finding out which Terminal is not working

 

The Relays are 

Terminal 15 Switched Live

Terminal 30 permanent Live

Terminal 75 supply

 

http://www.volkspage.net/technik/ssp/ssp/SSP_319_d2.pdf

 

 

[sealover1]

1 hour ago, Eddie-NL said:

The actual name for it is CECM Central Electronics Control Module

You can also find it in a host of VAG cars 2004 - 2009 Mk5 Golf, Early Tiguans, Scirocco

 

Some relays are controlled elsewhere.

You need to scan the car and try finding out which Terminal is not working

 

The Relays are 

Terminal 15 Switched Live

Terminal 30 permanent Live

Terminal 75 supply

 

http://www.volkspage.net/technik/ssp/ssp/SSP_319_d2.pdf

 

 

 

.

Thanks for that Eddi, the RAC guy did a scan on it and wrote these notes so he said replace the box but I was going to use contact spray and give it all a clean,  do you think I should try and source a used one as it does say its intermittent so it may not show on a scan? any advice would be really helpful please Eddi  

.

.

Edited 29 March, 2021 by sealover1

[Eddie-NL]

They are quite cheap now, but you will need vcds to fit it, if you are not buying exactly the same one don't copy and paste the coding either.

Check that the relays are ok, you could try using the same numbered ones in a different place or test them.

 

 

[sealover1]

13 minutes ago, Eddie-NL said:

They are quite cheap now, but you will need vcds to fit it, if you are not buying exactly the same one don't copy and paste the coding either.

Check that the relays are ok, you could try using the same numbered ones in a different place or test them.

 

 

 

.

I have a Hex V2 Duel-K & CAN but I'm new to using it so no ideal how to copy and paste stuff, I do know what copy and paste is as I repair computers might have to go onto the ross-tec forums and ask how to do it

[sealover1]

15 hours ago, Eddie-NL said:

They are quite cheap now, but you will need vcds to fit it, if you are not buying exactly the same one don't copy and paste the coding either.

Check that the relays are ok, you could try using the same numbered ones in a different place or test them.

 

 

Hi Eddie can you advise me please mate?

 

I cleaned all the relays and ports off with the contact cleaner but when I pulled the 395 relays off the relay covers come off so I pushed them both back on and wiggled them out, if the covers come off does that break the relays? car still wont start and i,m really stuck,

 

do you think replacing all the relays might help as I could not see how the relay box comes out so I dont know the part number as its on the back or I would buy another one on ebay, or if you know what one it is could you give me an ebay link please and will get my mate in the garage to fit it as I dont know how to set it up

 

hope you can help mate as really stuck now I wish I had the money to just take it to a garage and say just fix it (how the other half live A)

 

Edited 30 March, 2021 by sealover1

[Eddie-NL]

Plug your VCDS in and do an autoscan

https://www.google.com/search?q=vcds+how+to+do+an+auto+scan&rlz=1C1CHBF_en-GBGB745GB745&oq=vcds+how+to+do+an+auto+scan&aqs=chrome..69i57j33i22i29i30l7.11145j0j15&sourceid=chrome&ie=UTF-8#kpvalbx=_0xpjYJuUF-CO9u8Po-CV2Ag18

 

Post the scan up, just edit out your vin

[sealover1]

Here you go Eddie the RAC guy said it was intermittent though

.

 

 

Tuesday,30,March,2021,13:49:49:35642
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 21.3.0.0 (x64)  HEX-V2 CB: 0.4543.4
Data version: 20210226 DS325.0
www.Ross-Tech.com

VIN: TMBKE21Z  License Plate: 

Chassis Type: 1Z (1K0)
Scan: 01 03 08 09 15 16 17 19 22 25 42 44 46 52 55 56 62 72 76

VIN: TMBKE21Z   Mileage: 311810km-193749miles

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
22-AWD -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 03G-906-021-BMM.clb
   Part No SW: 03G 906 021 SS    HW: 03G 906 021 AB
   Component: R4 2,0L EDC G000SG  1302  
   Revision: --H07---    Serial number: SKZ7Z0G4311023
   Coding: 0000172
   Shop #: WSC 66565 257 00032
   VCID: 025C73D48807A2BB997-8056

No fault code found.
Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels:. 1K0-614-517-MK60AT.clb
   Part No SW: 1K0 614 517 AD    HW: 1K0 614 517 AD
   Component: ESP 4MOTION MK60-AT 0102  
   Revision: 00H14001    
   Coding: 0023170
   Shop #: WSC 73430 790 00000
   VCID: 698E4478957151E338D-803C

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
   Part No SW: 1Z0 907 044 R    HW: 1Z0 907 044 R
   Component: ClimatronicPQ35 110 0402  
   Revision: 00110021    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: 45D6A8C8D9A95583FC5-8010

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-H.lbl
   Part No SW: 3C0 937 049 AJ    HW: 3C0 937 049 AJ
   Component: Bordnetz-SG     H54 2202  
   Revision: 00H54000    Serial number: 00000005018991
   Coding: E18A0F130004100000110D000000000000087F065C000000000000000000
   Shop #: WSC 07894 067 57207
   VCID: 71BE2C18BDA1A92370D-8024

   Subsystem 1 - Part No: 1Z2 955 119 C  Labels: 1KX-955-119.CLB
   Component: Wischer 060607 022  0601  
   Coding: 00055223
   Shop #: WSC 07894  

   Subsystem 2 - Part No: 1K0 955 559 AF  Labels: 1K0-955-559-AF.CLB
   Component: RLS     250607 046  0204  
   Coding: 00471077
   Shop #: WSC 07894  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 1K0-909-605.lbl
   Part No SW: 1K0 909 605 T    HW: 1K0 909 605 T
   Component: Q4 AIRBAG VW8   020 2300  
   Revision: 05020000    Serial number: 0038PD1A3RTX  
   Coding: 0020788
   Shop #: WSC 73430 790 00000
   VCID: 3D26C028B1791D43A45-8068

   Subsystem 1 - Serial number: 6332MSME184A620EG

   Subsystem 2 - Serial number: 6342MSME1C044D46G

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
   Part No SW: 1K0 953 549 AQ    HW: 1K0 953 549 AQ
   Component: J0527           036 0070  
   Coding: 0002042
   Shop #: WSC 73430 790 00000
   VCID: 015E7CD88D01B9A380D-8054

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: E0221           002 0010

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
   Part No SW: 1Z0 920 942 D    HW: 1Z0 920 942 D
   Component: KOMBIINSTRUMENT VD1 1612  
   Revision: V1612036    Serial number: SKZ7Z0G4311023
   Coding: 0007402
   Shop #: WSC 11111 067 57207
   VCID: 392ED438A551216388D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V3.clb
   Part No SW: 1K0 907 530 L    HW: 1K0 907 951 
   Component: J533  Gateway   H07 0052  
   Revision:   H07 01    Serial number: 160607F2000472
   Coding: E9837F0E0002022303
   Shop #: WSC 73430 790 00000
   VCID: 3038E91C762BE02B3F3-8064

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: 1K0-907-554.lbl
   Part No: 1K0 907 554 L
   Component: Haldex 4Motion      0116  
   Coding: 0000001
   Shop #: WSC 00000 000 00000
   VCID: 3634DF04944FCE1B65F-8062

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 1Z0 920 942 D    HW: 1Z0 920 942 D
   Component: IMMO            VD1 1612  
   Revision: V1612036    Serial number: SKZ7Z0G4311023
   Shop #: WSC 00000 000 00000
   VCID: 392ED438A551216388D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1T0 959 701 D    HW: 1T0 959 701 D
   Component: Tuer-SG         006 1204  
   Coding: 0000758
   Shop #: WSC 73430 790 00000
   VCID: 3828D13C9E5B386B773-806C

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1Kx-909-144-G2V2.clb
   Part No: 1K2 909 144 K
   Component: EPS_ZFLS Kl.5   D06 1701  
   Shop #: WSC 00000 000 00000
   VCID: 3430E50C8233DC0B5BB-8060

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 1K0-959-433-MAX.clb
   Part No SW: 1K0 959 433 BT    HW: 1K0 959 433 BT
   Component:    KSG PQ35 G2  020 0204  
   Revision: 00020000    Serial number: 00000000000000
   Coding: 81801A085283007F3F02050FC0085F96907C00
   Shop #: WSC 73430 790 00000
   VCID: 035276D0971DABB3921-8056

   Subsystem 5 - Part No: 1Z0 951 171 
   Component: Innenraumueberw.008  
   Coding: 00000000
   Shop #: WSC 73430  

   Subsystem 6 - Component:   Sounder No Answer     

   Subsystem 7 - Component:       NGS n.mounted     

1 Fault Found:
01134 - Alarm Horn (H12) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 167
                    Mileage: 311812 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 15:26:06

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1T0 959 702 D    HW: 1T0 959 702 D
   Component: Tuer-SG         006 1204  
   Coding: 0000758
   Shop #: WSC 73430 790 00000
   VCID: 392ED438A551216388D-806C

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 1T0-907-357.lbl
   Part No: 1T0 907 357 
   Component: Dynamische LWR      0003  
   Coding: 0000008
   Shop #: WSC 73430 790 00000
   VCID: 74B0250CC2B39C0B9BB-8020

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
   Part No SW: 1Z0 035 161 C    HW: 1Z0 035 161 C
   Component: Radio FO3       019 0040  
   Revision: 00019000    Serial number: SKZ7Z3G0019189
   Coding: 0000402
   Shop #: WSC 73430 790 00000
   VCID: 2E04F7646C1FF6DB2DF-807A

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 1K0 959 703 J    HW: 1K0 959 703 J
   Component: Tuer-SG         006 1201  
   Coding: 0000144
   Shop #: WSC 73430 790 1012544
   VCID: 372AD200934537137E9-8062

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 1K0 959 704 J    HW: 1K0 959 704 J
   Component: Tuer-SG         006 1201  
   Coding: 0000144
   Shop #: WSC 73430 790 1012544
   VCID: 3828D13C9E5B386B773-806C

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: 1Z0-919-283.lbl
   Part No SW: 1Z0 919 283 B    HW: 1Z0 919 283 B
   Component: Parkhilfe 4-Kan H04 0020  
   Coding: 0000001
   Shop #: WSC 73430 790 00000
   VCID: 3D26C028B1791D43A45-8068

No fault code found.

End----(Elapsed Time: 01:17, VBatt start/end: 11.8V/11.8V. VIgn 11.8V)-----
 

Edited 30 March, 2021 by sealover1

[Eddie-NL]

Your one is 3C0 937 049 AJ

 

with vcds you should be able to test the relay function, i will have a look on my cecm

[sealover1]

was there no fault codes then Eddie?