New to Volvo Ownership

[Jas71]

Hello. I've recently purchased a 2010 Volvo S40 Drive E S model.
I would like to enable the average/instant mpg on the trip computer (it looks like it was an optional extra).
Looking around I've seen a program called VDASH. Would that be able to unlock this feature?
I've got some mechanical background as I worked at a Volvo specialist garage (not a main dealer ) many years ago, but the 240 and 340's had points and not computers
Must admit though the build quality is still as good as ever.
Thanks for any input
Jason

[cam]

Hi Jason and welcome mate.

[Moomoo]

Originally Posted by Jas71

Hello. I've recently purchased a 2010 Volvo S40 Drive E S model.
I would like to enable the average/instant mpg on the trip computer (it looks like it was an optional extra).
Looking around I've seen a program called VDASH. Would that be able to unlock this feature?
I've got some mechanical background as I worked at a Volvo specialist garage (not a main dealer ) many years ago, but the 240 and 340's had points and not computers
Must admit though the build quality is still as good as ever.
Thanks for any input
Jason

As for the fuel ⛽️ side of things, you will/should be amazed at its frugality, whether you can monitor it or not!😀👍

Fuel filters on these engines can be buggers for causing diagnostic false readings, in my experience. Give it a good thrashing as often as possible. Mine gave no trouble until I retired and it’s mileage , daily , dropped.

All you need now is a bit of luck! 😀

[iainmd]

Originally Posted by Jas71

I would like to enable the average/instant mpg on the trip computer (it looks like it was an optional extra).
Looking around I've seen a program called VDASH. Would that be able to unlock this feature?

The trip computer requires a software update from a Volvo dealer and possibly a new indicator stalk depending on what version is fitted to your car. Cost ranges between £180 and £380 depending on reported car versions from various dealers over the years. Frankly, not really worth it IMO.

VDASH says it can do a number of things including the trip computer but I don't know of anyone or any post intimating anyone has done it that way. You'll need the correct indicator stalk. It will need to have the Read, reset and scroll wheel functions.

The mpg will likely be way below what you hope for anyway. Our 1.6D DRIVe gets between 40 and 50 mpg depending on journey type. Not exactly epic.

[Moomoo]

Originally Posted by iainmd

The trip computer requires a software update from a Volvo dealer and possibly a new indicator stalk depending on what version is fitted to your car. Cost ranges between £180 and £380 depending on reported car versions from various dealers over the years. Frankly, not really worth it IMO.

VDASH says it can do a number of things including the trip computer but I don't know of anyone or any post intimating anyone has done it that way. You'll need the correct indicator stalk. It will need to have the Read, reset and scroll wheel functions.

The mpg will likely be way below what you hope for anyway. Our 1.6D DRIVe gets between 40 and 50 mpg depending on journey type. Not exactly epic.

Wow! That fuel consumption was disappointing! ☹️

That engine in my V70 , never went below 45 mpg and on a long trip to France, over 1000 miles, well over, on a 17 gallon tank. You do the maths!🥳

[iainmd]

Just done an 800 mile round trip from Scotland to the South of England and back (albeit with a roofbox). 43mpg averaged.

[Moomoo]

Originally Posted by iainmd

Just done an 800 mile round trip from Scotland to the South of England and back (albeit with a roofbox). 43mpg averaged.

Could be a V50 thing, gearing or whatever. Dissappointing!

[pinballdave]

I was looking at adding the trip computer to my S40. The controls are already there, so it's just a software change.

The dealer quoted £180 for the update, If you've got a DICE, then it appears that you can use VDASH to add it, but you need the PIN code to the CEM, which requires either sending it off, or reading it yourself, and then payment of around €60 for the VDash update.

The VDASH price is cheaper than the dealer, but both prices seem a little steep for effectively changing one byte in the memory of one of the CPUs in the CEM and then updating the checksum. So I'm leaning towards cracking open the CEM on the bench and making the changes myself.

There is some info out there about reading and writing these CPUs using xprog for cloning CEMs, and the location in memory of the configuration bytes, I just need to find out how to calculate the checksum (and a spare CEM to clone first, just in case I mess it up!).