Shimajilosan - So inorder to do this we would have to change the temp. sensor and/or change the display module or would it be a computer module somewhere. What I'am thinking is keeping a look out for a 03+ that has been wrote off, but we would need to know if it is one particular part or a combination of.

I beg to differ... To change the setting, it is hard coded into the cluster. (Odd I know) But I have tried. My fathers 4Runner is from US, and the cluster and all the displays are in Imperial.. I have a 4Runner in Canada. For shits and giggles I swapped clusters to see what would happen..

The center display which shows MPG or L/100km and Temperature changed.

After more research, there is a chip on the cluster 93C66, which holds odometer information and REGIONAL coding. The regional coding is what controls the Imperial or Metric display.

j0.

BTW, this is for 03+ 4Runners, not sure about prior ones.

So if I'm understanding you correctly it is the cluster that needs to be changed? I'm in Canada but I picked my 4Runner up in the US, it would be nice to have it in metric but I'am getting use to the US measurements.

If you change the cluster, (From US) to a Canadian Cluster, everything will change to Canadian measurements.

from:

F to C
MPG to L/100
Miles to KM (given)

J.

OK...whats a "cluster"? Are you referring to the "multi display unit"? Is that a hardware change, or a computer change to that chip?
Thanks!

OK I can deal with that There is a way to change it that is the main thing. The down side is that it is not cheap I presume. Like I mentioned earlier maybe I can find one from a right off vehicle. THANKS!!!!!!!!!!!

Cluster, the piece which has your gauges in it (Odometer, Speedometer, Temperature, Gas Gauge)

J.

Crap thought you meant the center display

There is a easier way,....

BUT, your cluster will read KM (odometer)... and will confuse the crap out of Toyota service, since your gauge is in MPH...

If you take apart your cluster, the chip is 93C66, which holds Odometer information, as well as regional coding.

You have to remove the chip, re-program it, and re-install. But since you are tampering with the chip (it has this blue epoxy like substance on it) you risk the chance of being accused of Odometer fraud, since it is the same chip..

j.

This is interesting. So, instead of replacing the US cluster with a Canadian one, you are saying one can reprogram the chip. I for one would still need a tech to do any of this, whether it is replace the cluster with a Canadian one, or do this tear down which really doesn't seem easier.

As much as I want to have the C temp on the display unit, seems like the work (and maybe expense?)required to do that goes way beyond what is reasonable. I think my solution is to install a separate digital compass/temp unit...I want the compass anyway, and most have the temp function -- that can display metric.

Thanks jOmama & MB

Hmmmmm, something still is fishy here. To recap my story my 99 T4R has been reading happily in C from 1999 until summer 2006. Upon getting my windshield replaced it (it was about the same time, although wife's vehicle so a bit unsure) the display switched to F (outside temp and interior climate control). The F value it reads is correct as well.

I was told by the dealer the same thing that US models only read in F and Canadian models only in C and it is physically impossible for them to do both. Well, not that I enjoy being a paradox but the fact remains that my display unit works in both C and F, no cluster or equipment changes required, just not sure how it is changed or how to get it back?

I still intend to take the unit out this summer (the back lights have now gone too). Between my Electrical Engineering background and my Dad the electronic technologist we will whip the damm thing into submission.

In the meantime if anybody finds out anything else, let us know. Thanks.

Regards,

Mike

Another bit of information, even though the climate display is in F, the odometer is still in kilometers. Interesting if it is all done in the same chip. Seems like the 99's must be different.

Im still not convinced there is not a software way of changing the setting also, I just know you can do it directly at the eprom.. There still might be away doing it at the cluster level, or in fact doing it thru a sequence. I cannot find any other way then that.

j0.

Update on my C to F problem, it was very hot in Edmonton over the past week and on the hottest day while driving to work I noticed the display had changed back to Celcius. Amazing. Then with the air conditioning on for a while I saw it change back to F.

Over the next two days I saw it change four times. I think this is good news as there probably is a loose connection (DIP switch, jumper, etc) that only makes contact when things expand when it is hot.

Unfortunately I don't have the time right now to take the dash apart and get at it but it proves that the same HVAC/dash cluster unit can display F or C and there should be a way to toggle it. BTW it's a 1999 LTD Canadian model.

Mike

No solution?