Due to not having a owners manual i have been unable to reset my average mpg on the trip computer
i have tryed all sorts, could some one please point out to me how easy it is  Current Stable:
Range Rover 2003 TD6 HSE Alveston Red, Sand Leather
Ford Focus C-Max silver 2003
V/W transporter Blue 1995
Yamaha XJR1300 Yellow 2002
Kawasaki ZX7R Green 1998
Honda CBR 600 Black 1998
Yamaha RD125LC Mk1 Red 1986
Yamaha RD125LC Mk1 Blue 1986

I don't know which version of computer display you have, but my car is the same age, so try this.

To the right side of the unit is an information button. Press that and you should come up with a display showing distances and timing etc. press the left hand button underneath the display, you should have 2 numbers to set - consum1 and consum2 (you can have two consumption figures to set - I use one for long term consumption and one for short journeys). Sellect either 1 or 2 then press "set" button on right hand side below display. This should start recording the mpg figure until you reset it again.

This is done from memory, if wrong let me know and I will try again sitting in the car lol No longer FF owner but still interested. Present car Jaguar XE
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Previous car Td6 SE
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Previous LR- Disco 300TDi Auto

As above.

Get the screen to show the fuel consumption, etc with the Info button, or just press the Menu button to show various options; one of which will be the computer information.

Twiddle the right knob until you're over whichever fuel consumption set you wish to zero, so either Cons1 or Cons2. Press the right button and you should have a Zero or Reset option.

Took me ages to figure it out as well. Eventually, had to admit that looking in the Owners Manual would solve the problem, which it did.

Note: You CANNOT do this from the dash display and the column stalks. I thought this would be possible, like in, say, a Passat. But it can only be done using the colour screen. Si. <This is my name.

I eat rat poison.

A man ain't truly been insulted until he stands buck naked in front of a woman and she didn't even notice. Or care.

If you want a pdf version of the Owners Manual I'll put it up somewhere for you  .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

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cheers Jo i think i may have one on its way, if it doesnt arrive i will get intouch
thanks to all replys when i get the FFRR back today i will try and re-set everything  Current Stable:
Range Rover 2003 TD6 HSE Alveston Red, Sand Leather
Ford Focus C-Max silver 2003
V/W transporter Blue 1995
Yamaha XJR1300 Yellow 2002
Kawasaki ZX7R Green 1998
Honda CBR 600 Black 1998
Yamaha RD125LC Mk1 Red 1986
Yamaha RD125LC Mk1 Blue 1986