Garmin 750s forgets Engine derived Fuel level on shutdown

[bestman]

My Garmin 750s get lots of useful data from the Suzuki DF60A.

As long as I do my bit and put in the correct initial fuel, it will display fuel burn, litres per mile, and most importantly fuel remaining and range.

The problem is that this data it reset every time the unit is powered down when going ashore, fishing etc.

Is there some way to configure the unit to 'remember' the last known fuel level?

Thanks in advance.

Nick

[nocando]

My boy had a 750 and 551 with his suzuki df200 and it definitely remembered fuel level on both his plotters. Even turning the battery off for months didn't reset it. He isn't on here anymore but I'll ask him if anything special needed done for you.

[bestman]

Thanks nocando

[Pikey Dave]

Originally Posted by bestman

Thanks nocando

Have you got the proper Suzuki engine interface cable?

[bestman]

Not Sure Dave,

Setting it up was a bit of trial and error as well.

I just tried various options until the data was displayed.



It seems to work but forgets on shut down, which is irritating, if I forget to note down fuel and then re-enter correct amount....

Maybe the internal battery isn't doing it's stuff - but it locks on to satellites quick enough.

[Pikey Dave]

Originally Posted by bestman

Not Sure Dave,



Setting it up was a bit of trial and error as well.



I just tried various options until the data was displayed.







It seems to work but forgets on shut down, which is irritating, if I forget to note down fuel and then re-enter correct amount....



Maybe the internal battery isn't doing it's stuff - but it locks on to satellites quick enough.

The fuel remaining is saved in the engine interface cable, not the unit. Go into setup/network/devices & see if a Suzuki interface is listed. If it is, select it & then see what data it’s providing. If there’s an option to select it as “fuel rem source” do so.
You’ll need the ignition switched on on the engine to power up the interface.

[bestman]

I'm heading out to the garage now!

[bestman]

I've podged a few buttons, changed the fuel, and it now seems to remember...

It definitely wasn't remembering, as it topped the tanks to 25, when the last known figure was less than that.

I'll leave its overnight and check again - but fingers crossed - and many thanks.

[bestman]

Cheers Gents - just retested and think I'm sorted

[Pikey Dave]

Originally Posted by bestman

Cheers Gents - just retested and think I'm sorted

[emoji106]

[Pikey Dave]

Originally Posted by bestman

Cheers Gents - just retested and think I'm sorted

You will probably have to calibrate the system. Don’t rely on it for the first few fill ups. See what the system thinks it’s used & compare it to how much it’s really used. You should be within a litre of each other. If not, when you fill up, there should be an option to calibrate when you tell the unit you’ve filled the tank. Basically you tell the tank it’s now full AND how much you’ve added to fill it. The unit will compare its calculation to reality & add a fiddle factor to compensate.
You may have to repeat the process for 2 or 3 fills before it’s accurate. Mine is to the litre.