Gas gauge

[bigmac f02+g12]

Good day all before I start just wanna say hope all are well staying safe and those who are sick speedy recovery to all I'm having a issue with my gas gauge went to fill up yesterday and once I finished noticed the gauge was reading only 3/4's full so I attempted to put more gas topped it off which I normally don't do but long story short gauge still read 3/4's full I live about 10 mins from gas station so once I got home noticed gauge moved more towards full but not all the way has any one experienced this ? If so what was cause and what was the fix just curious as to should I wait to next refill to see what happens before I bring it in to get checked I would think it should be covered under cpo

[mikeson]

My x6 digital instrument cluster shows same thing.
Left small gauge shows full but bottom of Speed gauge gas level image shows 3/4 and 412mils something.
I just live with it though.

[bigmac f02+g12]

Originally Posted by mikeson

My x6 digital instrument cluster shows same thing.
Left small gauge shows full but bottom of Speed gauge gas level image shows 3/4 and 412mils something.
I just live with it though.

I dropped it off at dealer this morning waiting now to hear back from them I tend to take mine back for every little thing cause what I'm payin why not ? Not to mention it's still under cpo and they put me in a 21 X5 so not mad at all they can take there time lol thing I don't get is first off I bought it first my wife so it's actually her truck I have a 2016 and a 2018 7 series which I have never had any issues with what so ever(knock on wood ) lol but this x5 always something

[scotty339]

Originally Posted by mikeson

My x6 digital instrument cluster shows same thing.
Left small gauge shows full but bottom of Speed gauge gas level image shows 3/4 and 412mils something.
I just live with it though.

Ive dealt with this before. There is the dash trip computers and then the iDrive computers. I've been using the Trip Computer in iDrive to track fuel economy, but like you the full gas gauge and then 3/4 range estimate was driving me nuts.

Use your BC button to scroll through your menu on your dash. You will see two MPG or L per 100K numbers along with the time, compass, date ect. Current and then average fuel economy. While selected on the average you can hold down BC and it will reset this average MPG estimate for you. This is what your fuel range estimate is tied too.

What its saying tho is that with a full tank of gas, based on your driving history and what the computer thinks you get for MPG, it estimates that you have 412 miles of range. The reason it shows 3/4 on the fuel estimate is that in a perfect world

I average about 12L / 100KM in my 35i which gives me 700ish KM of range or about 80% on my estimated gauge.

Hope this helps.

EDIT - Added picture.

[mikeson]

Wow,.. thank you so much.

[Rickardg]

Hi
I think that what TS is experiencing is that the fuel gauge does not show full after refuelling. This is not about the indicator for remaining driving distance that is shown under the speedo.

I am experiencing the same, full tank but only 3/4 on the gauge. If i enter the service menue in the instrument cluster i fid something interesting: it says "Tank total" (actual volume) 84.5 liters, but "display value" : 63.2 liters.

By some reson the car decides to not display correctly.
Maybe SW problem, looking forward to hear what the workshop dis to correct the problem.

[CatalinP]

Tank total is not actual volume, is tank capacity.

[Rickardg]

No, “Tank, total” is not the total tank volume, its the actual fuel volume in the tank, it’s changing accordingly. Right now when everything is fine, the difference is only a litre or two. It seem to be a software bug?
Bigmac, did they find a solution or explanation?

[RED_Y_]

Litre or two sounds normal, you have fuel in the pump, fuel lines etc.

[Rickardg]

I agree, a litre or 2 is within and probably to smoothen the displayed value. However, 20 liters the difference between 3/4 and 4/4 direct after refuelling to full tank isn’t good...

[bigmac f02+g12]

Originally Posted by Rickardg

No, "Tank, total" is not the total tank volume, its the actual fuel volume in the tank, it's changing accordingly. Right now when everything is fine, the difference is only a litre or two. It seem to be a software bug?
Bigmac, did they find a solution or explanation?

Spoke with S.A and apparently it's sensor in The fuel line don't remember exactly what he said I was honestly just relieved that I didn't have to come out of pocket and it's covered under CPO but once I get the car back I'll post a pic of the invoice so u can see exactly what it was

[Rickardg]

Originally Posted by bigmac f02+g12

Spoke with S.A and apparently it's sensor in The fuel line don't remember exactly what he said I was honestly just relieved that I didn't have to come out of pocket and it's covered under CPO but once I get the car back I'll post a pic of the invoice so u can see exactly what it was

That would be really great, im very curious

[bigmac f02+g12]

Originally Posted by Rickardg

That would be really great, im very curious

Ok so picked up car Saturday and it was a left side fuel level sensor as stated in the work order sad part is I miss the 2021 m50i they gave me for a loaner Lmaooooo now I love mine I truly do it gets the job done but that 2021 m50i now that was truly a beast just need to sell the wife on trading in our 17 for it

[Rickardg]

Thanks for uploading the invoice.
Gives an idea how to validate the fault too.