Stupid "fix" for high battery drain, clock reset, etc. - BMW M5 Forum and M6 Forums
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post #1 of 14 Unread 25th March 2019, 01:36 AM Thread Starter
sunghyun7
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Stupid "fix" for high battery drain, clock reset, etc.

I'm not sure whether this has been discussed. I have been having issues with car resetting clock almost daily and having high battery drain message on every start-up. I reset my battery and did every forum fix available (with exception of switching out comfort module) without luck. Well, I found a "fix" for my issue.

Instead of hanging my keyfob near my garage entrance (about 15ft away from the car through 2 walls), I started putting my keyfob in the kitchen which is far away from my car. My issues disappeared. I think the detection range may be little further than what one can anticipate.

I'm not saying this is panacea, but it's worth a shot if you're having similar problems. Over one week with no reset or battery error message which has never happened before.

On a more important note, I just clocked in over 10k miles on ACL bearings and pleased to announce no issues whatsoever. I never meant to daily the car, but it's pretty much my daily now! I may clock in that 30-50k mile for bearing inspection sooner than later.
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post #2 of 14 Unread 25th March 2019, 01:58 AM
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Good to know, I am more like 15 feet away and still have the same symptoms you describe, I will try to put the keys in the bedroom and see if that works...I also read somewhere to also check the IBS Sensor on the negative battery cable...waiting on a part and will update once installed..


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post #3 of 14 Unread 25th March 2019, 03:09 PM
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It will save the smg pump also. I noticed this the other day. Pump will periodically cycle if keyfob is president and doors are unlocked.
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post #4 of 14 Unread 25th March 2019, 05:53 PM Thread Starter
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that's good point too. I would make habit of locking the car in the garage and leaving the car key far away from the car or put it in some metal cage.
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post #5 of 14 Unread 25th March 2019, 05:55 PM
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Originally Posted by sunghyun7 View Post
that's good point too. I would make habit of locking the car in the garage and leaving the car key far away from the car or put it in some metal cage.
You speak of a metal cage...can I find that on Amazon!? If so what the heck to I search for! I am serious

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post #6 of 14 Unread 27th March 2019, 03:14 PM
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So i took mine in for routine maintenance and service rep told me there is a recall for a battery cable that needed to be replaced, it was a while since i drove mine as well and i noticed the clock was reset as well.
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post #7 of 14 Unread 28th March 2019, 05:50 AM
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post #8 of 14 Unread 1st April 2019, 05:14 AM Thread Starter
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btw, i think my issue with clock reset and high battery drain message is over. this seems to be the definitive 'fix' for me for the above issues. would like to know whether it fixed the issues in your cases as well.
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post #9 of 14 Unread 15th April 2019, 07:31 AM
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Quote:
Originally Posted by HM506 View Post
Quote:
Originally Posted by sunghyun7 View Post
that's good point too. I would make habit of locking the car in the garage and leaving the car key far away from the car or put it in some metal cage.
You speak of a metal cage...can I find that on Amazon!? If so what the heck to I search for! I am serious

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A Faraday cage or shield is an enclosure that cancels out EM radiation using a mesh constructed of a conductive material. Conveniently enough there are Faraday pouches made specifically for key fobs that emit ID signals to prevent potential thieves from using equipment that can sniff their signal and reproduce it to gain access to the associated vehicle.
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post #10 of 14 Unread Today, 06:04 AM
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Quote:
Originally Posted by Bimmer_Pilot View Post
A Faraday cage or shield is an enclosure that cancels out EM radiation using a mesh constructed of a conductive material. Conveniently enough there are Faraday pouches made specifically for key fobs that emit ID signals to prevent potential thieves from using equipment that can sniff their signal and reproduce it to gain access to the associated vehicle.
Perfect, just got a 2 pack on Amazon... thanks!!!

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