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derb · 01-15-2008, 03:27 PM

Here's one post...
Speedometer accuracy

You can also get vehicle speed in kph through the ac/heater controls. This speed is supposed to be actual speed without the safety margin.
http://www.cb-racing.com/boxster_AC.html
Scroll to 20c.
When in this diagnostic mode the heater controls maintain the last temperature setting.
I believe this only works up to the 2000 model year.
I'm not sure if the dealer can remove the error.

Regards,
mike

01-15-2008, 03:27 PM	#2
derb Registered User Join Date: Dec 2005 Location: South Riding, VA Posts: 322	Here's one post... Speedometer accuracy You can also get vehicle speed in kph through the ac/heater controls. This speed is supposed to be actual speed without the safety margin. http://www.cb-racing.com/boxster_AC.html Scroll to 20c. When in this diagnostic mode the heater controls maintain the last temperature setting. I believe this only works up to the 2000 model year. I'm not sure if the dealer can remove the error. Regards, mike