Outside Temp Reading - 986 Forum - The Community for Porsche Boxster & Cayman Owners

vipola · 08-28-2007, 05:46 AM

I was reading somwhere that you see the temperature because it is the first item, but if you add switch you can get the gas milleage, etc.. is this true on 99 boxster? I got the temperature displayed, but no computer option or switch to change it, i guess it just has been activated before? maby I could hide a switch somewhere in the car else then in the dash just to change those? Thanks

Quote:

Originally Posted by Tool Pants

On 1997-2000 if the OBC/trip computer was turned on you would see the outside temp.

In 2001 Porsche changed the instrument cluster. On a 2001-2004 if the OBC is turned on you see nothing unless you retrofit a switch or the stalk. On 2001-2004 the OBC display is the same display used for the trip odometer. Therefore you cannot see the OBC display without a switch/stalk so that you can switch to the next display.

For a 1999 you can have the outside temp display turned on with a PST2/PIWIS. No retrofit is needed as the OBC display is not shared.

The exceptions are some early 1997s that did not have the outside temp sensor installed. Other exceptions are cars that do not have a/c, which are cars outside of North America.

Tool Pants · 08-28-2007, 07:46 AM

If you can see the outside temp then the OBC is turned on.

Porsche sells dash switches. Most people who do the OBC retrofit with a switch use the footwell switch.

You also need to make a wiring harness from the switch to the instrument cluster connector. That is this picture.

racer_d · 08-28-2007, 11:21 AM

I have a 2000 without OBC/Trip computer.

HOWEVER, when my tech was clearing codes from a MAF failure, he activated the Outside temperature control which must be "prewired" in all cars, whether or not it gets activated is the issue. So now, when I look at the digital speed, right below it is my outside temp.

Tool Pants · 08-28-2007, 03:05 PM

Takes a few minutes with a PST2/PIWIS.

Go into the instrument cluster and change the coding to with OBC. The default display you then see is the outside air temp. This is for 1997-2000.

eVoMotion · 09-05-2007, 09:25 AM

thanks for the info. I was mistakenly thinking that my 02 could have the temp easily turned on. I will ask my tech about creating a switch as well.

SinnerDC2 · 02-26-2008, 08:10 PM

I have a 2000 base, I see the outside temperature with a + beside it. So I'm guessing if I have the OBC turned on I would have a extra stock. So if I want to change the display I need to add a switch?

Thanks
Nick