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Thread: BMW f800gs EWS Fault with low beam light on .

  1. #1
    Join Date
    23rd February 2008 - 22:13
    Bike
    07 KLX300r 08 BMW R 1200 GS, f800gs
    Location
    auckland
    Posts
    55

    BMW f800gs EWS Fault with low beam light on .

    I have a problem I'm trying to solve .
    I went to start bike after a stint of not using it and turn key on no start.

    SYMTHOMS
    -EWS on dash,
    -No neutral
    -No gear neutral indicated on dash.
    -No fuel pump sound
    -Low beam' is on which is not normal .

    I have put battery on charge since and back on bike (no luck).
    I did alot of reading online so decided to replace ring antenna (no luck)
    Thought have i brought a dud ring antenna so plugged it into my r1200gs started up. So tested old antenna on r1200gs started up.
    Took battery out of r1200gs put in f800gs (no Luck).

    Went to dealer he said change battery it has a reading of 12.60 volts (f800gs) which he said is low should be 12.80 volts the (r1200gs) has 12.50 volt and starts it fine.
    I tested all my other vehicles batterys and ranged from 12.40volts to 12.75 volts all start fine.
    Is 12.60 volts stuffed??? I looked at date on battery 10 yrs old its the original battery Is this the problem?.
    So I put (f800gs) battery in r1200gs started bike better and stronger than is own battery.
    I put battery on charge again and took to auto electrician to load test battery he tested it standing voltage 12.90 volts and passed load test without a hint of trouble he said this battery is 10yrs old but healthy not my problem.
    I have read online wires chaffing and breaking in lome ( I have not gone this far yet).

    Also read the computer not booting up properly after battery been removed and you are to turn key off and on two times to sort this (no luck).
    I have also read people having had to replace the engine control unit under the seat BMS-K $1500- $2000 ouch ?
    I have also talked to a BMW expert not dealer ( dealership trained) he is currently working on another f800gs with similar problem (but no low beam on ) and he is going through the loom looking for a break and will take a look at mine if I have no luck once he can work out his current one

    Also note as part of my routine I store my bikes un ridden for months on end so will disconnect battery from bike and trickle charge to maintain battery health every 3 months bikes are only disconnected for the night when doing this.


    I really would appreciate if you have experienced the above symptoms especially the low beam on I would like to here from you .
    cheers ken

  2. #2
    Join Date
    25th February 2016 - 10:31
    Bike
    BMW F 650GS
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    Manuaku
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    162

    BMW f800gs EWS Fault with low beam light on .

    Quote Originally Posted by Bams View Post
    I have a problem I'm trying to solve .
    I went to start bike after a stint of not using it and turn key on no start.
    .


    I really would appreciate if you have experienced the above symptoms especially the low beam on I would like to here from you .
    cheers ken
    Hi ken
    I had a similar problem on my 2001 f650gs Dakar
    There was 3 things needed replacement

    My headlight was fixed by replacing the headlight relay, $16
    When the current dips the relays can start to fail (due to age)
    New battery - even though it was holding close to enough current, and recharging well it wasn’t holding charge over longer times between rides $135
    Blown brake light.
    The light was on, but the second filament had blown, so when I touched the brakes there was no brighter light.
    I don’t know if the tail light was incidental or parallel to all the problems, but my Ecu boot up, starter and pump worked like normal after those 3 things were fixed that day



    Sent from my iPad using Tapatalk

  3. #3
    Join Date
    23rd February 2008 - 22:13
    Bike
    07 KLX300r 08 BMW R 1200 GS, f800gs
    Location
    auckland
    Posts
    55
    Thanks for your reply
    So you had a ews fault on dash and low beam light was on no gear indication on dash and no start
    and those where the things to remedy problem?

  4. #4
    Join Date
    5th January 2007 - 14:58
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    motocompo
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    Buttfuck nowhere
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    4,334
    My background is in BMW car repairs, and from what I gather, the bike & car equipment is very similar electronically.
    When the A EWS equipped car displayed the symptom your bike is, the usual repair route was to purchase a new EWS module from BMW by chassis number & Programme it to the car.
    Alternative more cost effective route on older EWS 1 & 2 vehicles, was to purchase a key chip, EWS module & ecu from the wreckers all from the same vehicle & install all three. Wreckers usually had these taped together as a set for this purpose.
    This became more difficult on the later cars, due to availability & cost, also compatibility of components.
    Has the bike been on a GS901 scanner to get some hard facts about the fault? Otherwise you are throwing good money away on guesswork.
    Call OBD Tech on 09 5798246 & have a chat with them for a start. They understand these systems better than anybody else I ever dealt with.
    Your dealer is an idiot suggesting you change a battery with 12.6v without testing it.
    I assume you mean BMW dealer, but honestly, you could get better advice from a drug dealer.
    Also, what's the chances of a wire chafing through on a loom of a bike that has been parked up.
    You can dismiss that theory too.

  5. #5
    Join Date
    28th October 2012 - 13:59
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    KTM 1290 SDGT
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    thata way
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    505
    Tried the spare key?
    Political Correctness, the chief weapon of whiney arse bastards

  6. #6
    Join Date
    23rd February 2008 - 22:13
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    07 KLX300r 08 BMW R 1200 GS, f800gs
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    auckland
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    55
    Quote Originally Posted by sidecar bob View Post
    My background is in BMW car repairs, and from what I gather, the bike & car equipment is very similar electronically.
    When the A EWS equipped car displayed the symptom your bike is, the usual repair route was to purchase a new EWS module from BMW by chassis number & Programme it to the car.
    Alternative more cost effective route on older EWS 1 & 2 vehicles, was to purchase a key chip, EWS module & ecu from the wreckers all from the same vehicle & install all three. Wreckers usually had these taped together as a set for this purpose.
    This became more difficult on the later cars, due to availability & cost, also compatibility of components.
    Has the bike been on a GS901 scanner to get some hard facts about the fault? Otherwise you are throwing good money away on guesswork.
    Call OBD Tech on 09 5798246 & have a chat with them for a start. They understand these systems better than anybody else I ever dealt with.
    Your dealer is an idiot suggesting you change a battery with 12.6v without testing it.
    I assume you mean BMW dealer, but honestly, you could get better advice from a drug dealer.
    Also, what's the chances of a wire chafing through on a loom of a bike that has been parked up.
    You can dismiss that theory too.
    hi thanks I rang them but they only deal with cars
    I plan to get bike put on gs 911 maybe next week when the guy from BM Glendene rings me to bring it in he's currently working on another bike with similar symptoms going through the loom and wants to sort that one first before looking at mine.
    As to the wire chaff the bikes done 25000kms on a mix of gravel roads off road and tar its had plenty of time
    of chaffing conditions and it seems not that uncommon on these bikes and the last ride this bike had was over some ruff terrain . I had an XT 660 strand me in queenstown for near on 3 days it took me to find that chaffed wire and that bike had only 20000km on it.

    I find it hard to believe that the ECU is stuffed is BMW tech that rubbish ???

  7. #7
    Join Date
    23rd February 2008 - 22:13
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    07 KLX300r 08 BMW R 1200 GS, f800gs
    Location
    auckland
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    55
    Quote Originally Posted by buggerit View Post
    Tried the spare key?
    yep tried spare key and a new ring antenna

  8. #8
    Join Date
    25th February 2016 - 10:31
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    BMW F 650GS
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    Manuaku
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    162
    Quote Originally Posted by Bams View Post
    Thanks for your reply
    So you had a ews fault on dash and low beam light was on no gear indication on dash and no start
    and those where the things to remedy problem?
    Yup


    Sent from my iPad using Tapatalk

  9. #9
    Join Date
    5th January 2007 - 14:58
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    motocompo
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    Quote Originally Posted by Bams View Post
    hi thanks I rang them but they only deal with cars
    I plan to get bike put on gs 911 maybe next week when the guy from BM Glendene rings me to bring it in he's currently working on another bike with similar symptoms going through the loom and wants to sort that one first before looking at mine.
    As to the wire chaff the bikes done 25000kms on a mix of gravel roads off road and tar its had plenty of time
    of chaffing conditions and it seems not that uncommon on these bikes and the last ride this bike had was over some ruff terrain . I had an XT 660 strand me in queenstown for near on 3 days it took me to find that chaffed wire and that bike had only 20000km on it.

    I find it hard to believe that the ECU is stuffed is BMW tech that rubbish ???
    Regardless of mileage, id be prepared to bet that a wire didn't rub through since you last rode it into the garage & put it on the stand, but if you want to pull the wiring loom to bits then don't let me hold you back.
    Disconnecting the battery is probably the ignition source of your issues.
    And yeah, BMW stuff is no better than anything else.
    If you tell OBD tech that the ECU is the same to look at as one from a BMW E90 car he may soften, but he seems to think in fairly straight lines.

  10. #10
    Join Date
    1st June 2014 - 21:23
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    Ducati 748R
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    nelson
    Posts
    147
    I had some crazy issues with a ducati I parked up for a period of time, turns out spider webs can cause some serious electrical issues! Probably not the issue but may be worth mentioning.

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