BMW F850GS Forum

Please login or register.

News: A big welcome to all new members !


Author [NL] [FR] [ES] [DE] [SE] [IT] [NO] [MY] Topic: Fat battery?  (Read 440 times)

0 Members and 1 Guest are viewing this topic.

Offline tomcat

  • GS Pro
  • ***
  • Posts: 232
  • Bike: F850GS Sport.
  • Town / City: Gisburn
  • Country: gb
Fat battery?
« on: March 04, 2020, 02:15:24 PM »
I have just been out with my son, he currently has a BMW loan bike due to a warranty issue with his 850GSA.
His bike whilst at work had been randomly activating the TFT screen and progressively flattening the bike battery.
His dealer has indicated there have been issues with water ingress into the keyless starter button, creating electrical gremlins.
We await the result of further investigation into his particular problem.
If anyone suffers similar battery drain, keep a check if the TFT is activating whilst the bike is switched off.
« Last Edit: March 04, 2020, 02:16:56 PM by tomcat »
If it aint broke, keep fixing it until it is!

Online Gazza750

  • GS Pro
  • ***
  • Posts: 192
  • Bike: F850GS Adventure
  • Town / City: Yorkshire
  • Country: gb
Re: Fat battery?
« Reply #1 on: March 05, 2020, 05:35:34 PM »
Worth knowing about - thanks for the info 👍🏻

Offline tomcat

  • GS Pro
  • ***
  • Posts: 232
  • Bike: F850GS Sport.
  • Town / City: Gisburn
  • Country: gb
Re: Fat battery?
« Reply #2 on: March 05, 2020, 05:39:54 PM »
Update.
Dealership have told him it was a loose connector causing the issue.
I find it difficult to comprehend how a loose connector is able to supply power to an otherwise disconnected unit?
If it aint broke, keep fixing it until it is!

Offline tomcat

  • GS Pro
  • ***
  • Posts: 232
  • Bike: F850GS Sport.
  • Town / City: Gisburn
  • Country: gb
Re: Fat battery?
« Reply #3 on: March 21, 2020, 10:41:17 AM »
And an update to the randomly connecting TFT/battery flattening issue on my sons GSA.
Following the first diagnosis and "repair". Within two weeks the damn thing started doing the same again.
Bike back to BMW, son supplied with a loan Mini for two weeks.
Collected the bike, and, you've guessed it. The same day, the same thing again, bike randomly illuminates the TFT and flattens the battery.
Son now on a loan 1250GS whilst the dealership re-evaluate the issue.
« Last Edit: March 21, 2020, 10:42:40 AM by tomcat »
If it aint broke, keep fixing it until it is!

Online Gazza750

  • GS Pro
  • ***
  • Posts: 192
  • Bike: F850GS Adventure
  • Town / City: Yorkshire
  • Country: gb
Re: Fat battery?
« Reply #4 on: March 22, 2020, 12:44:22 AM »
Hope your son gets it sorted quickly. It's annoying when you keep having to visit the dealers for the same repetitive fault. Fingers crossed they sort it this time 🤞🏻

Offline SnoDrtRider

  • GS Pro
  • ***
  • Posts: 286
  • Bike: F850GS
  • Town / City: South Jersey, USA
  • Country: us
Re: Fat battery?
« Reply #5 on: March 22, 2020, 01:48:44 AM »
Here in the US most states have "Lemon Laws" that make it easy to get a full refund or replacement vehicle after three attempts of a repair by the dealer or manufacturer.
I don't know where we are... but I have been lost here before...

Online Matty589

  • GS Pro
  • ***
  • Posts: 119
  • Country: gb
Re: Fat battery?
« Reply #6 on: March 22, 2020, 09:37:17 AM »
Unfortunately here in the UK we have consumer law but itís pretty much down to the consumer to push the case. The wiring from the keyless module to ignition isnít that complex so itís very frustrating for it not to be fixed first time. Hope it gets sorted (Iím picking up an 850GSA this week so fingers crossed no gremlins).

Offline GSMartin

  • GS Pro
  • ***
  • Posts: 120
  • Bike: F750GS Sport
  • Town / City: Hambleton
  • Country: gb
Re: Fat battery?
« Reply #7 on: March 26, 2020, 03:59:50 PM »
Did your son get his bike back before they closed the dealership?

Offline tomcat

  • GS Pro
  • ***
  • Posts: 232
  • Bike: F850GS Sport.
  • Town / City: Gisburn
  • Country: gb
Re: Fat battery?
« Reply #8 on: March 26, 2020, 04:46:07 PM »
Yes, the last bike to leave the dealership. Latest quote was in relation to an SOS module.
We won't get the chance to see if the cure is permanent until we're able to ride freely once again.
If it aint broke, keep fixing it until it is!