Can you "zero" the fuel consumption.

[Lotz-A-Landies]

It seems that the fuel consumption is on a vehicle lifetime basis. (MY12 SDV6 D4 SE)

Is there a way I can zero the consumption at the begining of a trip?

At the moment after a period of city cycle or after towing heavy trailers it takes about 500Km or more to get some idea of the fuel economy on that particular trip.

[Ferret]

When you reset trip A or trip B you reset the fuel consumption.

[Lotz-A-Landies]

When you reset trip A or trip B you reset the fuel consumption.Doesn't seem to happen on mine, must investigate further! :o

[IndusD4]

There may be a setting for this in the driver information module, under trip computer settings.

[JamesH]

This is odd. Are you saying the the fuel average is the same for both Trip A and Trip B?

When I rest trip B after each refuel it goes blank and does not actually show an average fuel consumption for about 5 km, then it pops up with a large figure that falls rapidly..

I'd actually be interested in having a fuel consumption average that does not reset, at least on one of the trip meters. Maybe I'll have apoke around the settings to try an replicate your problem!

Ive heard that it is al reset when serviced as well, don't know if thati s true or not.

[JamesH]

And one more thing, are you actually resetting the trip meter? When I first did it, I held the scroll button in on the flicker stalk as the manual says and eventually a message came up on the message center saying "Resetting Trip B" so I let go and it did not reset. You need to hold the button in until the rest completes and the message goes away.

[rufusking]

The "Trip" data for A, B & Auto are independent of each other. The trip distance Max's out at 9,999.9 but the fuel rate seems to continue.

[jonesy63]

Diana - is this what you do? Press and release the "i" button on the stalk until L/100km is displayed, then hold it in for 5 seconds and it will say something like "resetting".

[Lotz-A-Landies]

Thanks guys, I have never been pressing the button long enough. Tried an instant push and a couple of seconds but obviously never waited long enough.

Very happy now! :) :) :):)

[scarry]

Lotza,have you calculated your average over a full tank or two to see if the readout is correct?

Mine is at least 1 to 1.5l/100 out.:(

And the stealers recon they cannot fix it:(

[Lotz-A-Landies]

No I havent but I know that the speedo over reads by 6KPH (apparently it's mandatory that speedo's over read to slow the population down) but haven't checked the odo so until that is checked it's pointless calibrating the consumption.

[JamesH]

My speedo is incorrect, reads high as said above. I have not checked the accuracy of the odometer against a GPS though. I'm guessing it's not a given that becasue the speedo is wrong the odo is wrong.

As to the fuel average, mine is definitely bulldust compared to what I'm calculating based on the fuel I'm actually using measured at the bowser. It does indicate how you're going in the context of its own (faulty) algorithm though, and that's useful.

[gghaggis]

My speedo is incorrect, reads high as said above. I have not checked the accuracy of the odometer against a GPS though. I'm guessing it's not a given that becasue the speedo is wrong the odo is wrong.



Correct - different parameters are set in the CCF to set the accuracy of these independently.

Cheers,

Gordon

[Lotz-A-Landies]

<snip> .... As to the fuel average, mine is definitely bulldust compared to what I'm calculating based on the fuel I'm actually using measured at the bowser. It does indicate how you're going in the context of its own (faulty) algorithm though, and that's useful.I do watch the fuel economy and try to drive to achieve the best economy, even if it is innaccurate, but without the ability to clear the previous data it was a pointless exercise for the first few hundred Km.

[scarry]

When you check the odo you will find it will be almost spot on,as per ADR's.

The speedo has to read more than you are actually going,most modern vehicles are doing around 96 to 97k/hr when the speedo says 100k/hr.

As others have said it is nice to be able to see approx. fuel consumption.

But there are many other vehicles on the market that are VERY accurate,fuel consumption being the same as calculated.

You would think LR could sort it........

[Lotz-A-Landies]

I don't know if the different tyres (General Grabber AT) will be a different rolling radius to the OEM fittings, but I suspect this is the reason for the difference of 6KPH for the speedo and makes for an error possibility in the ODO.

[JamesH]

What I'm doing is leaving Trip A as a long term average fuel consumption figure and resetting Trip B at every fill up. You could also reset B when conditions change like hooking up a trailer, leaving the bitumen and changing the terrain control setting etc.

I enjoy tracking this stuff for its own sake as I'm an anorak/nerd by nature.

Just for fun when we were both going in convoy down to his farm about an hour south of Perth a mate and I both reset our trip meters, me in the D4 and him in a 2009 V8 diesel full sized Rangie. Traffic was smooth but busy and we spent a lot of time driving like nannas at about 80-90 kph. He got 9.3 l/100km, I got 7.9.

[Barryp]

I just reset my "Trip B" after filling up and it definately reset the fuel consumption reading back to zero. First update was after about 1 kilometer and it obviously was not accumulating on the previous balance.
Regards
Barryp

[Graeme]

When you check the odo you will find it will be almost spot on,as per ADR's.

The speedo has to read more than you are actually going,most modern vehicles are doing around 96 to 97k/hr when the speedo says 100k/hr.

As others have said it is nice to be able to see approx. fuel consumption.

But there are many other vehicles on the market that are VERY accurate,fuel consumption being the same as calculated.

You would think LR could sort it........
The speedo has to not read slow and if fast it must be within a particular tolerance which IIRC is 10%.

Whilst LR wont adjust the parameters, aftermarket tools can. My odometer was correct for standard size tyres but has now been adjusted for the slightly larger tyres, the speedo is now 1 kph fast at 100 kph and the fuel consumption is now quite accurate for my average driving although it can vary if I have a stint of spirited or grandpa driving.