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Thread: heated grips and seat stopped working - good battery and voltage

  1. #16
    Left Coast Rider
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    Nov 2011
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    Vancouver, British Columbia, Canada
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    For what its worth, I've had a Shorai LiFePo battery in my used-once-a-week big twin sport bike since 2015 and its performance has been excellent. I plug my Battery Tender Jr. into it about once a month just for the heck of it and the charge indicator always shows "green".

    YMMV.

    Sorry for the thread derail.
    Last edited by BC1100S; 12-09-2019 at 07:35 PM.

  2. #17
    Registered User
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    May 2015
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    Oregon
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    Thumbs up UPDATE! The "Windows 98" fix

    After getting my GS911 wifi scanner hooked up, I was able to turn on the heated grips and seat via the ZFE module test function. The GS911 also showed the switches in the hand grip are working (at least sending a signal to the ZFE and dash indicators). it still didn't make sense because I knew the signal was getting to the module, it just wasn't turning them all on. I unplugged all the heated elements and tested one at a time, but still no go.

    So, what do you do with a 10 year old PC? unplug it and let it sit for a while before rebooting. In this case I disconnected the battery for 2 minutes, then tried it again. No go. Disconnected it again, left it for an hour, retest and WHAM! it all works now!

    I may have a short in one of the heating wires, but I won't know until I start riding again (Pacific NW here and currently soggy and icy). If it does it again, I suspect it's the seat heating element as I had a custom seat built using the old pan and heating element in June 2019.

    Thank to all who chimed in, great forum!

    PS: Big thanks to those dudes who invented the GS911 wifi. The best BMW tool in my box!

  3. #18
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Quote Originally Posted by brian_pnw View Post
    After getting my GS911 wifi scanner hooked up, I was able to turn on the heated grips and seat via the ZFE module test function. The GS911 also showed the switches in the hand grip are working (at least sending a signal to the ZFE and dash indicators). it still didn't make sense because I knew the signal was getting to the module, it just wasn't turning them all on. I unplugged all the heated elements and tested one at a time, but still no go.

    So, what do you do with a 10 year old PC? unplug it and let it sit for a while before rebooting. In this case I disconnected the battery for 2 minutes, then tried it again. No go. Disconnected it again, left it for an hour, retest and WHAM! it all works now!

    I may have a short in one of the heating wires, but I won't know until I start riding again (Pacific NW here and currently soggy and icy). If it does it again, I suspect it's the seat heating element as I had a custom seat built using the old pan and heating element in June 2019.

    Thank to all who chimed in, great forum!

    PS: Big thanks to those dudes who invented the GS911 wifi. The best BMW tool in my box!
    Great!
    Always a plus when a thread has a finish
    OM
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  4. #19
    Registered User
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    May 2015
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    Oregon
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    worked for 2 hours...

    Back to the beginning. I'm starting to think the right grip button controller is the issue as everything works when I use the Hex911 wifi tool to turn them on.

  5. #20
    Registered User
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    May 2015
    Location
    Oregon
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    Thumbs up Updated fix 2.0

    I resolved that the issue must be an old version of the switch that had been recalled. I decided to remove the switch and replace it. While doing so I noticed the multi-wire connector (#1 in the picture) looked as if it was not seated all the way into the socket. It doesn't have a clip like almost every other socket wire connection on this bike. I found that the "clam shell" mating part has a small flat ledge that should act as the retainer when assembled. All I know is I pushed the plug all the way in and started the bike and the grips now work.

    NOTE: I did install handle bar risers on this bike. This causes some needed wire and break line adjustments for slack. I removed this wire from the "L" clip on the right side handle bar. I'm guessing at some point I pulled on the wire and caused it to separate just enough to cause the problem.


    I put a small dab of gorilla glue on the joint. GG has a nice cross linking (binding) component with Acetal (Delrin) and Nylon (polyester) plastics. I dis-assembled the switch housing to confirm what version of the switch I had. It is the latest version, so the previous owner must have had the recall done prior to Jan 2019.

    What I learned about these wonderful (and sometimes horrible) bikes are the computer systems can cause false diagnostic roads to go down.
    • Heated grip-seat module - I was always able to turn the heated grips and seats on (getting heat) with my HEX GS-911 wifi tool on the page that runs diagnostics for turn signals and electronics. (different than the switch test)
    • Switch Test module - The HEX GS-911 tool also showed the controller switches were turning on and off when pressed, but the signal wasn't causing the heat to turn on.
    • Onboard computer - The bikes LCD dash showed the grip heater indicator icons on even though they had no heat.
    • Related faults - This fault/wire issue also turns off the heated seats, so if you are looking for that issue, check the controller switch.


    I hope this helps if you're going through the same issue. Saved me a few hundred bucks in parts, but more important in our current times, some of my sanity. (Covid-19)



    right control swtch wiring socket.JPG
    Attached Images Attached Images

  6. #21
    Left Coast Rider
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    Nov 2011
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    Vancouver, British Columbia, Canada
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    Thanks for the in-depth followup.

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