Guest french_fry007 Posted January 27, 2011 Share Posted January 27, 2011 Hello ! I have purchase a UK specs 95 Supra in June last year from a member of the forum. In order to get French plates, the admnistration is requesting to change the indication of mileage into kilometres. Meaning : it's currently written 106 000 miles and it should be switched to 170 000 kms. I'm asking this question on this forum because I'm guessing that some of you have done it on Jspecs Supra that originally have kms and needed switching to Miles. I have gotten an answer from the French forum : change the part to a Jspec part but it would mean that the mileage would be decreased to 0 and the measurement of kms would be wrong (if I do in reality 16 000 kms it would be indicated 10 000 kms). Do you have another solution ? Thanks for your help. Quote Link to comment Share on other sites More sharing options...
Attero Posted January 27, 2011 Share Posted January 27, 2011 I'm not sure anyone has successfully converted it. Most people change it to KM + Miles (and vice versa). Quote Link to comment Share on other sites More sharing options...
InSvain Posted January 27, 2011 Share Posted January 27, 2011 same here and otherwise you would probably have to go to a Toyota dealer for that Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 27, 2011 Share Posted January 27, 2011 It is possible to move two surface mounted resistors on the odo circuit board but it is very fiddly and you need a steady hand. I've done quite a few now but it really is a PITA! From the information I have gathered it would seem that the actual readout value is not accessible to reprogram. It seems that it is burnt directly to a chip that usual methods cannot alter. So if you you do convert your odometer the 106000 miles it displays now would just change to 106000 kms and continue to clock up in kms. Only way around would be to get an odo reading as close to the reading you want and then running it on the car with the wheels in the air or a power drill on the odo driven gear - both options would be pretty impractical though... Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 27, 2011 Share Posted January 27, 2011 I may have to make a few phone calls now as the only information I could find was on US websites - I really think there's got to be some way of reprogramming the unit! Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 27, 2011 Share Posted January 27, 2011 my odo has the KMS marked on it and i am looking for one that has Miles on, ive done the conversion a few month back so my odo and speedo now use miles Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 27, 2011 Share Posted January 27, 2011 Just phoned several places - it would seem it's not possible to alter the actual readout. Quote Link to comment Share on other sites More sharing options...
Thorin Posted January 27, 2011 Share Posted January 27, 2011 I can't find the info now but like straightsix says, you can move some resistor or solder something to change it to display "km" or "miles" but you can't change the actual digits. Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 27, 2011 Share Posted January 27, 2011 Pics of the 2 resistors to move. Obviously you would be setting back from miles to km so reverse positions.... So green positions to red Quote Link to comment Share on other sites More sharing options...
Mike_Mac Posted January 27, 2011 Share Posted January 27, 2011 I've had my Odo converted from Km to Miles, ie converted reading and also clocking up in Miles too with no problems. This company here: http://www.ncs-systems.com/speedm8/index.php?action=show&man_id=13&model_id=256 were the ones that did it. Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 27, 2011 Share Posted January 27, 2011 I had a look at the link - it looks like it just swaps kms to miles but will not convert the actual value or mileage/km covered in the vehicle. It looks like it is just the same as swapping the resistors around as per previous post. I think the OP is looking for the services of a mileage correction specialist which after the phone calls I made, mileage correction on the Supra is not possible. Quote Link to comment Share on other sites More sharing options...
supracars Posted January 27, 2011 Share Posted January 27, 2011 i think your best bet is to buy one with around 170000km on it. as already said it is possible to convert km to miles and visa versa but to correct the figures it is a difficult job. Quote Link to comment Share on other sites More sharing options...
bignum Posted January 28, 2011 Share Posted January 28, 2011 A j spec odo won`t work properly on a uk car, there`s a speed correction built in for cruise/spoiler etc. Quote Link to comment Share on other sites More sharing options...
Mike_Mac Posted January 28, 2011 Share Posted January 28, 2011 I had a look at the link - it looks like it just swaps kms to miles but will not convert the actual value or mileage/km covered in the vehicle. It looks like it is just the same as swapping the resistors around as per previous post. I think the OP is looking for the services of a mileage correction specialist which after the phone calls I made, mileage correction on the Supra is not possible. Mileage correction is perfectly possible on a Supra, that's why I specifically said that I got my mileage reading altered at the same time as the clocking up resistors were swapped. Mine certainly works fine. These guys are able to convert the odo to clock up in km (resistor swap) and at the same time adjust the mileage reading on the odo to the correct figure in km. This way the OP can keep his original odo and not have to hack about with his wiring loom. Simples Quote Link to comment Share on other sites More sharing options...
Guest french_fry007 Posted January 28, 2011 Share Posted January 28, 2011 Thanks for your help, I was able to describe to the administration what the consequences of changing the odometer would have. It is likely that it would accepted as it is (I didn't mention that there is maybe a perfectly fine solution of course). Thanks again, Gabriel Quote Link to comment Share on other sites More sharing options...
straightsix Posted January 28, 2011 Share Posted January 28, 2011 This way the OP can keep his original odo and not have to hack about with his wiring loom. Simples Just to replace an odometer?? Quote Link to comment Share on other sites More sharing options...
Mike_Mac Posted January 29, 2011 Share Posted January 29, 2011 (edited) Just to replace an odometer?? When I did mine the original owner had installed a speedo converter and then branched it off to the odo, so it was also clocking up in miles. When I properly converted the odo to miles internally I had to revert all this back to stock. Therefore... One of the ways the OP could have converted from miles to km, while keeping his original odo unmolested could have been to install a miles-km converter into the wiring to the odo. This would involve hacking into the loom and still leaves him with an incorrect mileage reading. The way I have suggested is far simpler than that. Edited January 29, 2011 by Mike_Mac (see edit history) Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.