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Thread: 850 CSi drain battery + cluster problem.

  1. #51
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    Then that symptom points directly to the cause,
    locate and remove that splice!

  2. #52
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    Yes, it's either something that has been added, something that was added and then removed badly, or the Park Ventilation system has gone wrong.

    The Park Ventilation can be disabled by removing the Park Ventilation Relay Box A15:

    http://www.meeknet.co.uk/e31/e31_95.pdf#page=625

    http://www.meeknet.co.uk/e31/e31_95.pdf#page=500

    It is within the reals of possibility that the Blower Relay K4 has got stuck closed - but a giveaway would be that it will click when removed if it is OK:

    https://www.meeknet.co.uk/e31/Timms_...lay_Finder.htm

    I've never tried to get to the Park Ventilation Relay Box A15, but that is probably the best move to start with
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  3. #53
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    Quote Originally Posted by Timm View Post
    Yes, it's either something that has been added, something that was added and then removed badly, or the Park Ventilation system has gone wrong.

    The Park Ventilation can be disabled by removing the Park Ventilation Relay Box A15:

    http://www.meeknet.co.uk/e31/e31_95.pdf#page=625

    http://www.meeknet.co.uk/e31/e31_95.pdf#page=500

    It is within the reals of possibility that the Blower Relay K4 has got stuck closed - but a giveaway would be that it will click when removed if it is OK:

    https://www.meeknet.co.uk/e31/Timms_...lay_Finder.htm

    I've never tried to get to the Park Ventilation Relay Box A15, but that is probably the best move to start with

    Ok i will try that. Should i replace the ingition switch in case? Not so expensive piece, is this number correct 61 328 365 517?

  4. #54
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    Update -

    I found this 2 boxes in the trunk, the silver one i removed the fuse from then the voltage dropped a small amount
    If i remove the cluster or the Fuse 1 it drop to 0.04 with the fuse removed from the box in the trunk.

    If i reconnect the cluster the voltage slowly start rising to 0.12 and then to 0.32 if the odo meter turns on. If i now remove the cluster it drops to 0.08 and wont go down lower.

    When i removed the fuse from the silver box in the trunk the small " speaker " with 1 black and 1 white connection at the footwell connected to the black cover started to make spark sounds. I dont know if this came from removing the fuse but ive never heard this before. What could be the cause of this?Attachment 634211

    And the Aux Water Pump was very warm one time today when i was measuring and removing things.
    Last edited by Johanswe; 07-21-2018 at 03:04 PM.

  5. #55
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    You will also find that the heater valves are hot as well as the auxiliary pump - they are fed by the same supply as the blower motor. So, we are still looking for the same problem - try removing the park ventilation module - and if that doesn't remove the power from the blower motor then it is still a search for the additional splice.

    The electronics behind the carpeted panel are the amplifier (the black bit) - and what looks like a radio tuner - I don't have the tuner as it is part of the head-unit, but Revtor mentioned that some models have a separate tuner, and yours might be one of them. On the other hand, that might be the addition we are looking for.
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  6. #56
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    Quote Originally Posted by Timm View Post
    You will also find that the heater valves are hot as well as the auxiliary pump - they are fed by the same supply as the blower motor. So, we are still looking for the same problem - try removing the park ventilation module - and if that doesn't remove the power from the blower motor then it is still a search for the additional splice.

    The electronics behind the carpeted panel are the amplifier (the black bit) - and what looks like a radio tuner - I don't have the tuner as it is part of the head-unit, but Revtor mentioned that some models have a separate tuner, and yours might be one of them. On the other hand, that might be the addition we are looking for.

    park ventilation module is it this one? under the glove box Attachment 634236

    The blower motor works with it disconnected, and when i turn the ignition off the fan stops

  7. #57
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    Attachment 634237Attachment 634238Attachment 634239

    Corrosion inside the box, assume its from years of wet feets. Can this be cleaned? or is the box crap

  8. #58
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    Unless you use Park Ventilation (who does!) Just leave it out. Has the current reduced with it removed?

    Sent from my SM-G935F using Tapatalk
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  9. #59
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    Quote Originally Posted by Timm View Post
    Unless you use Park Ventilation (who does!) Just leave it out. Has the current reduced with it removed?

    Sent from my SM-G935F using Tapatalk

    With that box removed + the fuse removed from the audio box or what it is in the trunk + the instrumental cluster connected and fuse1 connected it travels from 0.07-0.26 fast up and down all the time. When i remove the fuse 1 it goes down to 0.04. So i would not say there were any diffrence with the park ventilation box removed?

  10. #60
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    We are still looking for a splice that has been added that has bypassed the ignition switch then......
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  11. #61
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    Quote Originally Posted by Timm View Post
    We are still looking for a splice that has been added that has bypassed the ignition switch then......

    Ok then i have no idea, the only thing ive seen is the alarm with imobilizzer that ive removed. There is no extra light or so on the car. So it cant be the instrumental cluster + the box in the rear? I mean the current dropt to 0.04mA as it should be at? Or is it something else that cause them to drain the power?

    I really appreciate you taking your time helping me.
    Last edited by Johanswe; 07-22-2018 at 03:02 PM.

  12. #62
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    Well, I think we are slowly edging towards the cause of your problems. Let's see if these things are still true.

    The blower fan runs with the ignition key removed
    The blower fan doesn't run with the park ventilation relay box removed
    We have a silver box above the amplifier that we are not sure about - is this really a radio tuner? What head unit do you have - take a picture.
    If you disconnect the silver box AND Fuse 1 the current drops below 50mA (0.05A)
    What does the current drop to if Fuse 1 is disconnected and the silver box is still fitted with the fuse?

    I would like you to try removing the park ventilation relay box (you don't need it) and also disconnect the IHKA. Leave Fuse 1 fitted and remove the fuse from the silver box - and then measure the current - that would tell me a lot!
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  13. #63
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    - The fan dose not run anymore when i remove the key after i cleaned the park ventilation box from oxid yesterday. So that fixed the problem with the blower staying on.
    -It works but shuts off when i turn the ignition off as above.
    -Attachment 634296Attachment 634297Attachment 634298 This is my headunit Attachment 634299

    - Yes it drops to 0.04mA

    - With fuse 1 disconnected and fuse still connected in the silver box the current is at 0.09. If i connect the fuse 1 it raises to 0.30

    - Removed IHKA, and vent box removed, fuse 1 connected, but fuse at silver box disconnect then the current travels from 0.25 to 0.11 and back on. Most of the time its at 0.25 ish but goes down like 1 time every 10 sec or something to 0.11


    Ive just noticed that relay K72 and k73 is warm, not super warm but they are warm after the 16 min sleep time.
    Last edited by Johanswe; 07-23-2018 at 12:36 PM.

  14. #64
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    Those are the consumer cut-off relays - which means the General Module has not gone into sleep mode.

    Are you absolutely sure your wipers are working correctly? That is the connection between F1 and sleep mode....
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  15. #65
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    Quote Originally Posted by Timm View Post
    Those are the consumer cut-off relays - which means the General Module has not gone into sleep mode.

    Are you absolutely sure your wipers are working correctly? That is the connection between F1 and sleep mode....
    Well they work What i can tell, but What is the give away if they dont work correctly and What is wrong if so?

  16. #66
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    The only thing ive noticed is that i feel like the wipers is slow at full speed and that the wipers dont cover the windscreen fully. The pressure motor for the wipers is that controlled by those relays?

  17. #67
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    No, as long as they do something we can rule that out - as EEDegreeToDrive found, if the wiper relays are removed the General Module will not go into sleep mode. It was also mooted that if the wiper motor was faulty the same problem would occur:

    https://www.bimmerforums.com/forum/s...-Bench-Testing

    Is your auxiliary pump still warm?
    Does your interior lights go out when you shut the doors?

    A good thing to do here is to measure what parts of the car are still alive after 16 minutes - the easiest way to do that is to measure the voltage at the fuses. So, open the bonnet and boot to get access to the fuses - wait 16 minutes and then measure the voltage at each of the fuses (positive probe on the fuse, negative probe on the jump-start post that is on the suspension tower (not the B+ post!)).

    List the fuses that still have 12V on them
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  18. #68
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    Quote Originally Posted by Timm View Post
    No, as long as they do something we can rule that out - as EEDegreeToDrive found, if the wiper relays are removed the General Module will not go into sleep mode. It was also mooted that if the wiper motor was faulty the same problem would occur:

    https://www.bimmerforums.com/forum/s...-Bench-Testing

    Is your auxiliary pump still warm?
    Does your interior lights go out when you shut the doors?

    A good thing to do here is to measure what parts of the car are still alive after 16 minutes - the easiest way to do that is to measure the voltage at the fuses. So, open the bonnet and boot to get access to the fuses - wait 16 minutes and then measure the voltage at each of the fuses (positive probe on the fuse, negative probe on the jump-start post that is on the suspension tower (not the B+ post!)).

    List the fuses that still have 12V on them
    - Auxilary pump not warm anymore
    - No they dont i just noticed? Ive got it on the middle stage all the time. Should the lights go out when i shut the door if i have the bottom pushed up or down?
    -Fuse 4 , 5 , 6, 22 , 25 and all fuses in the trunk have 12v +
    Last edited by Johanswe; 07-24-2018 at 12:43 PM.

  19. #69
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    With the rocker switches pressed at the rear (top as shown below):



    the lights should go out after 15 seconds with the door shut - do they do that?

    Also, you should have had power on F1 - have you taken that out?
    Last edited by Timm; 07-24-2018 at 05:09 PM.
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  20. #70
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    johanswe that silver box is the radio which is part of your bavaria c professional head unit.
    it was an option on the e31.

  21. #71
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  22. #72
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    Quote Originally Posted by Timm View Post
    With the rocker switches pressed at the rear (top as shown below):



    the lights should go out after 15 seconds with the door shut - do they do that?

    Also, you should have had power on F1 - have you taken that out?
    Lights go out after 15 sec yes, and f1 have 12v my bad.

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