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by SuperPoly
Thu Jan 27, 2022 5:07 pm
Forum: General / Main i3 Owners Forum
Topic: Metallic rattle sound from passenger side over deep bumps
Replies: 8
Views: 804

Re: Metallic rattle sound from passenger side over deep bumps

Sure, here's the file: http://sndup.net/cgfm

It can be heard twice. Something must be loose, but I'm not sure where to go hunting. It sounds like it's mostly from the rear, but sometimes it sounds closer to the front.
by SuperPoly
Fri Jan 21, 2022 6:00 pm
Forum: General / Main i3 Owners Forum
Topic: Battery range continues to drop when Rex cuts in.
Replies: 3
Views: 141

Re: Battery range continues to drop when Rex cuts in.

I would strongly recommend coding "hold state of charge" which adds an option to start the REx as low as 75% state of charge.

Non-US i3s all have this option by default.
by SuperPoly
Thu Jan 13, 2022 6:41 pm
Forum: Technical BMW i3 Discussions
Topic: Set a maximum charge limit
Replies: 25
Views: 4267

Re: Set a maximum charge limit

There is less regen braking above 90%, right? For that reason alone I would like to set a lower charge limit for my daily use. I use between 0-10% of the battery most days.
by SuperPoly
Thu Jan 13, 2022 6:31 pm
Forum: General / Main i3 Owners Forum
Topic: Metallic rattle sound from passenger side over deep bumps
Replies: 8
Views: 804

Re: Metallic rattle sound from passenger side over deep bumps

Thanks for your thoughts. I was thinking suspension, but it's not any louder when the windows are down. The sound is definitely eminating from the interior. I took a look at the motor/engine cover and three of the neoprene nuts were destroyed (part #16: https://parts.bmwnorthwest.com/images/parts/BM...
by SuperPoly
Thu Jan 06, 2022 1:52 pm
Forum: General / Main i3 Owners Forum
Topic: Metallic rattle sound from passenger side over deep bumps
Replies: 8
Views: 804

Re: Metallic rattle sound from passenger side over deep bumps

Thanks for your input. I have been knocking and tapping on every surface in the car, but no luck so far. It really sounds like it's in the cabin, but it takes a sizable bump to activate it.
by SuperPoly
Mon Dec 06, 2021 5:06 pm
Forum: General / Main i3 Owners Forum
Topic: Metallic rattle sound from passenger side over deep bumps
Replies: 8
Views: 804

Metallic rattle sound from passenger side over deep bumps

I’m hearing a metallic sound that almost sounds like two coins touching when going over deep bumps. It’s from the left side, possibly the seat or dash. I have removed everything from the car and searched for loose objects, but no luck.

Has anyone heard this before? Thoughts on diagnosing it?
by SuperPoly
Thu Dec 02, 2021 4:20 pm
Forum: BMW i3 Rex Specific Discussions
Topic: Very loud REX - does a Motor Bike Silencer work?
Replies: 4
Views: 939

Re: Very loud REX - does a Motor Bike Silencer work?

Were you able to try a different REx car? I suspect the first one had a problem.
by SuperPoly
Mon Nov 22, 2021 6:50 pm
Forum: BMW i3 Rex Specific Discussions
Topic: Very loud REX - any solutions?
Replies: 18
Views: 1649

Re: Very loud REX - any solutions?

During my test drive at this deal, the battery was about 2%. As soon as he powered up the car ( every time) the REX came on with this non-stop rattling. I might still buy the car IF 1) the range extender trigger can be adjusted or reduced to 2% instead of 5-6% 2) when the maintenance cycle starts i...
by SuperPoly
Mon Nov 22, 2021 12:15 pm
Forum: BMW i3 Rex Specific Discussions
Topic: Very loud REX - any solutions?
Replies: 18
Views: 1649

Re: Very loud REX - any solutions?

Could you give a decibel reading from the NIOSH app (dBA and dBC)? A video might also be useful, but phones typically add some compression. I have driven two REx models extensively, a 2018, and my 2017. The REx on both was extremely muted, all but inaudible at highway speed. I think there is somethi...
by SuperPoly
Fri Nov 19, 2021 10:15 am
Forum: News and Main BMW i3 Forum Discussions
Topic: Adjust high-beam/main beam headlight
Replies: 3
Views: 5430

Re: Adjust high-beam/main beam headlight

Does this require a special tool?

Update: allen key does the trick!

Image

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