Replacing fuel level sensor - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 22 (permalink) Old May 1st, 2019, 9:55 am Thread Starter
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Replacing fuel level sensor

The fuel level sensor went out on my 2011 Multistrada a couple of weeks ago, so I pulled the tank, removed the old sensor from the bottom of the tank, and got a new one yesterday. I thought it would be as simple as screwing the new sensor in and putting everything back together, but apparently Ducati changed something about the sensor, and when you install it in older model Multistradas (2010, 2011 & 2012) the software has to be updated.

Does anyone know if (1) the bike will run with the new sensor installed but without the software update, and (2) will the new sensor work at all without the update? I don't want to inadvertently screw something up by trying to ride the bike with the new sensor but without the software update. I checked with the closest dealer and the soonest I can get a service appointment to update the software is nearly two months from now.

2008 1098
2011 Multistrada 1200S Touring
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post #2 of 22 (permalink) Old May 1st, 2019, 12:29 pm
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I think I read somewhere (most likely in the MTS Fuel Sensor MEGA Thread) that it will report in reverse full=empty and empty=full but I am kinda guessing. The bike will run and be fine if you leave it unplugged until you can get in to get it updated. Warning light, blinking gauge, and error msg should be expected.

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post #3 of 22 (permalink) Old May 1st, 2019, 6:57 pm
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Wish I had more info, I will say if you do have a dealer re-flash or update your ECU, it wipes the 4 digit pin.
My last sensor lasted about 3,000 miles before it started failing.

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post #4 of 22 (permalink) Old May 2nd, 2019, 4:58 am Thread Starter
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Thanks everyone. I didn't realize that problems with the fuel level sensors was such a big thing until I started reading the (now) 47-page sticky on the subject. I also didn't realize how lucky I've been that my original sensor lasted a little over 82,000 miles before failing. The replacement sensor I recently got is apparently an F generation sensor, as the part number is 59210212F. It's pretty shocking (and disheartening) that Ducati has gone through so many generations of this trying to get it right. How has the experience been with the later-generation sensors like the F? Have they got it right yet?

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post #5 of 22 (permalink) Old May 2nd, 2019, 9:18 am
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Quote:
Originally Posted by davisjj View Post
How has the experience been with the later-generation sensors like the F?

Have they got it right yet?
Bad.

No.

Here's the good news. Fuel sensors are failing on brand new Ducatis across the entire model range so at least you're not alone.

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post #6 of 22 (permalink) Old May 2nd, 2019, 10:15 pm
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Quote:
Originally Posted by Damascus View Post
Quote:
Originally Posted by davisjj View Post
How has the experience been with the later-generation sensors like the F?

Have they got it right yet?
Bad.

No.

Here's the good news. Fuel sensors are failing on brand new Ducatis across the entire model range so at least you're not alone. <img src="https://www.ducati.ms/forums/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />

Get a $20 bypass connector from ebay and stop the headache. Just plug the connector and track you mileage like most are doing until Ducati declared that the problem is truly fixed..

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post #7 of 22 (permalink) Old May 5th, 2019, 6:39 am
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I've been told that swelling from the ethanol is causing the problem. If you let your old sensor dry out it should work fine again. At least that's what I've been told

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post #8 of 22 (permalink) Old May 5th, 2019, 10:18 am
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I've been told that swelling from the ethanol is causing the problem. If you let your old sensor dry out it should work fine again. At least that's what I've been told

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Mybe until your next fill up and it will swell up again!?!

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post #9 of 22 (permalink) Old May 5th, 2019, 1:38 pm
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I've been told that swelling from the ethanol is causing the problem. If you let your old sensor dry out it should work fine again. At least that's what I've been told

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Who ever told you that is full of something. The tank swelling is a different issue. I had my tank professionally coated to stop the swelling and gaps in the body work.

Anyway, even after that, later versions of the fuel level sensor still didn't work. The sensors are junk being cranked out by some contract manufacturer in China, they are being used in other brands such as BMW, and they fail in those brands too.

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post #10 of 22 (permalink) Old May 5th, 2019, 1:42 pm
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Yes I understand the tank swelling issue is separate but the same thing is happening to the mechanism in the fuel sending unit. Again this is just what was told me and they may be full of s***.

Mechanic at a local dealer told me if I take it out and let it dry out it will probably work again. How long you have to let it dry out I don't know, how long will it work until it gets trouble again I don't know. Does he know what he's talkin about I don't know.

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