Y 2000 1.8 estate,battery drain issue.

[j.johnson23]

Hello everyone.
I would like to know if anyone knows what current is flowing from the battery when car is switched off.
The reason I am asking is my wife`s estate keeps getting a flat battery after not being used for more than 2 days.
I found a current drain of 0.56 amp which I have traced to the central locking and convenience system ecu.
If the red wire on the relay plate is disconnected and fuses 14 and 38 are removed the battery drain is zero.
The ecu was replaced last year as the old one was wet and wiring was corroded,I replaced both and sorted pollen filter leak,the ecu is dry and everything works as it should,even the remote key fob.This problem as only just started to appear in the last month or so.
The battery was changed for a new one and when this went flat a second new battery(Bosch) was fitted.
Any readings from some one with a similar model would be greatly appreciated as this is giving me a massive headache.

[zollaf]

thats too much, there is a problem. 0.02 is about right.

[j.johnson23]

I had a mate come round with vag com on a laptop.This is what it picked up in the way of faults.
Chassis Type: 3B - VW Passat B5
Scan: 01,02,03,08,15,16,17,19,35,36,37,46,55,56,58

Address 01 -------------------------------------------------------
Controller: 8D0 906 018 R
Component: 1.8L R4/5V MOTR 0005
Coding: 04001
Shop #: WSC 05311
3 Faults Found:
17924 - Intake Manifold Valve (N156): Open Circuit
P1516 - 35-00 - -
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
16955 - Brake Switch (F): Implausible Signal
P0571 - 35-10 - - - Intermittent
Readiness: 0000 0000

Address 03 -------------------------------------------------------
Controller: 8E0 614 111 AB
Component: ABS 5.3 FRONT D00
Coding: 0273004281
Shop #: BB 24548
No fault code found.

Address 08 -------------------------------------------------------
Controller: 3B2 907 044 C
Component: CLIMATRONIC C 0.7.0
Coding: 05000
Shop #: WSC 05311
1 Fault Found:
01273 - Fresh Air Blower (V2)
37-00 - Faulty

Skipping Address 15-Airbags

Address 17 -------------------------------------------------------
Controller: 3B0 920 922
Component: B5-KOMBIINSTR. VDO V22
Coding: 05445
Shop #: WSC 05311
IMMO-IDENTNR: VWZ7Z0X1968353
No fault code found.

Address 19 -------------------------------------------------------
Controller: 6N0 909 901
Component: Gateway K<->CAN 0001
Coding: 00004
Shop #: WSC 05314
No fault code found.

Address 46 -------------------------------------------------------
Controller: 1J0 959 799 AH
Component: 3R Zentral-SG Komf. 0001
Coding: 04096
Shop #: WSC 05311
14 Faults Found:
01329 - Convenience System Data Bus in Emergency Mode
35-00 - -
01328 - Convenience System Data Bus
35-10 - - - Intermittent
01334 - Door Control Module: Rear Right (J398)
49-00 - No Communications
01333 - Door Control Module: Rear Left (J388)
49-00 - No Communications
01332 - Door Control Module: Passenger Side (J387)
49-00 - No Communications
01331 - Door Control Module: Driver Side (J386)
49-10 - No Communications - Intermittent
00931 - Locking Module for Central Locking: Rear Right (F223)
54-10 - Incorrectly Equipped - Intermittent
00930 - Locking Module for Central Locking: Rear Left (F222)
54-10 - Incorrectly Equipped - Intermittent
00929 - Locking Module for Central Locking: Front Passenger Side (F221)
54-10 - Incorrectly Equipped - Intermittent
00928 - Locking Module for Central Locking: Front Driver Side (F220)
54-10 - Incorrectly Equipped - Intermittent
01135 - Interior Monitoring Sensors
36-10 - Open Circuit - Intermittent
01134 - Alarm Horn (H12)
49-00 - No Communications
01331 - Door Control Module: Driver Side (J386)
49-00 - No Communications
01333 - Door Control Module: Rear Left (J388)
49-00 - No Communications

End -------------------------------------------------------

This is what was left after he tried clearing the faults.


Control Module Part Number: 1J0 959 799 AH
Component and/or Version: 3R Zentral-SG Komf. 0001
Software Coding: 04096
Work Shop Code: WSC 05311
Additional Info: 1J2959802D 3R Tõrsteuerger. FS0002r
Additional Info: Steuergerát Beif. antwortet nicht 1J2959801E 3R Tõrsteuerger. BF0002r
Additional Info: Steuergerát HL antwortet nicht
Additional Info: 1J4959812D 3R Tõrsteuerger. HR0002r1J4959812D 3R Tõrsteuerger. HR0002r
5 Faults Found:
01329 - Convenience System Data Bus in Emergency Mode
35-00 - -
01334 - Door Control Module: Rear Right (J398)
49-00 - No Communications
01134 - Alarm Horn (H12)
49-00 - No Communications
01331 - Door Control Module: Driver Side (J386)
49-00 - No Communications
00944 - Heated Exterior Mirror: Passenger Side (Z5)
35-00 - -

He was pretty impressed as most sacks of sh*t (his phrase not mine)he has tested had nowhere as many faults.
He did not have time to go through it all properly but said he would run a mile if a car he went to buy had this many faults.
Sadly we are stuck with said sack so any advice would be appreciated.
Having to disconnect battery every night is becoming a pain but its the only way round it at the moment.
He reckons that the ccm is not going into sleep mode due to the faults in its system and that is why it drains the battery.
I reckon a shotgun would put the whole bloody thing to sleep but he said just move it on.
Its a shame as I personally run a 1997 19tdi B5 which other than a turbo and the ever failing front suspension arm has been reliable for 11 years and I love it to bits.

[crackpotterpig]

the no communications bit sounds as if it might be a wiring issue? are all the door looms plugged in correctly and the wiring ok? one thing that might be drawing current is if that heated mirror is staying powered? might be worth temp disconnecting it.

with something like this will take a bit of trial and error.

[j.johnson23]

There`s plenty of error!
I found what i think is the bonnet catch micro switch hanging free so i have put a cable tie round it for now to see if it stops the drain.
The heaters in the mirrors are open circuit so i presume the elements have blown.
She does not want it anymore and i cant blame her,will live with having to take battery lead off and run it till mot is up.
There are a few things i can use off it before its weighed in.