Change from miles to km

[sliderr]

Just added OBC to my car :) :) i love it ! just wondering if anyone knows how to switch from F to Celcius and from Miles to Km on OBC ?? anyone ?

[rdoine]

Page 99 of the Boxster owners manual (downloadable in the documents menu section above) details how to make the change.

Good luck.

[sliderr]

I wished it was that simple, it changes from miles to km but not for the obc units or temperature ..

[rdoine]

I guess I'm lost. What happens when you make the change with the OBC stalk? You move the stalk up or down to get to the speedometer: klm/mls setting and then push the stalk forward. When you do that and then continue pulling the stalk toward you until you are out of the OBC, what happens?

[sliderr]

when i added the obc i got miles and mpg etc, when i cycle the entire stack and reset i return to the tempature .. ( in Fahrenheit ) and i want Celsius :)

[rdoine]

I wish I were home so I could go out to my car and walk through it with you. I'm still unclear by what you mean by "when i cycle the entire stack and reset". I don't recall needing to reset anything. Push to enter the OBC. Move the stalk up or down to get to "set" and push the stalk forward. Move the stalk to set the km/mls and push the stalk forward and make your changes. Then pull the stalk back enough times to back out of the OBC. Then it should be set. If it isn't working, I'm lost. AND, after setting the kilometers are you backing up a level so that you can scroll down to temperature and then pushing the stalk forward to enter that menu before backing completely out?

Edited August 5, 2010 by rdoine

[Tool Pants]

You can't change the OBC units when you do the retrofit on a 1997. There are different clusters for the different countries. The hybrid country if I remember right is the UK. When they do the retrofit the temp is in C but the distance is in miles.

[sliderr]

no way to reprogram this?

[aron in toronto]

no way to reprogram this?

The easy and possibly costly way to do what you want ( F to C) is to have the dealer hook up their Porsche System Tester and reset your car's computer to the settings for your country. IIRC this switches all the digital imperial units to metric.

You can change the HV/AC temperature display units youself by doing the following, but I don't think it changes the outside temp display on the OBC.

The following was posted by MEANROB on 6speedonline

"Porsche AC Diagnostics

(undocumented, unsupported feature)

The AC Climatronic unit is actually manufactured by Audi. There is some sort of serial data stream (not CAN) that allows the AC unit to display engine parameters. This works on 1997-2000 boxsters. Same as 996....

To switch from F to C:

Hold down the recirculating button then push both the temperature + - buttons.

To access diagnostics:

Hold down the Recirculating & Air up buttons for 5 seconds. The + - buttons go up and down through the list of "c" codes. The center vent button switches the left display between the "c" code and its actual value. Press the Auto button to exit.

I have yet to verify all these, this info was copied from wonderful people on PPBB!

Here is a list of what can be seen:

0c - ERL

1c - Oil Temp?

2c - Inside temp. Sensor mounted in the aspirator assembly at the side of the dash.

3c - Outside temp. Sensor located inside the air inlet of the A/C unit.

4c - Outside temp. Sensor located in front grill of the radiator. The data is fed to the Climatronic from the instrument cluster. When not moving, the instrument cluster OBC temp display retains it's last setting until moving. This is to prevent heat emanating from the radiator affecting the temperature sensor. The A/C unit uses the lower of the two outside air temp values in determining fresh-air temp.

5c - Outside temp. (matches OBC outside temp display)

6c - Coolant temp.

7c - Footwell discharge temp.

8c - Sun sensor (dash top)

9c - Sun sensor.

10c - Passenger compartment fan speed.

11c - Passenger compartment fan voltage.

12c - Temperature mix Flap command 1=COLD, 100=HOT

13c - Temperature mix Flap position

14c - Central Flap command

15c - Central Flap position

16c - Footwell/Defrost Flap command

17c - Footwell/Defrost Flap position

18c - Recirculation Valve command 1=OFF, 100=RECIRC

19c - Recirculation Valve position (feedback)

20c - Vehicle speed in kph, updating only once per second. (real speed, not speed+safety margin as in the speedometer)

21c - Engine RPM in hundreds. This too only updates once per second.

22c - ?

23c - ?

24c - Sun sensor, exterior lights switch & panel lights control (term. 58 & 58d voltage) - used for A/C panel display illum.

25c - ?

26c - ?

27c - ?

28c - Fan speed?

29c - ?

30c - Engine run time in seconds (255 max.)(=0xff)

31c - Timing counter

32c - Displays test

33c - Software version? Mine states 3.4

34c - ?

35c - Outside temp. from inlet sensor (filtered?)

36c - temp?"

Aron

Edited August 19, 2010 by aron in toronto