Anyone done any tests of how accurate the A4 speedo is (UK 2003 in this case)? I normally cruise around at ~80mph in 70 limits and have never been troubled before but I've now had some (ahem) unwanted attention and wonder if my earlier cars read 5~10% high and my Audi doesn't.
I've read that the actual speed can be displayed by pressing a combination of buttons on the aircon control, as follows:
"A/- To access the actual speed display, start your car and then on your climate control panel press and hold-in both the Econ and Auto buttons or the Recirculation and Temperature Up buttons. This will change your outside temperature reading to Fahrenheit.
Then press the recirculation button and at the same time press the upward pointing arrow button above the recirculation button.
Your climate control screen will change to a different mode displaying 1c.
Use your temperature control + button to display code 17c. This is the actual speed display feature.
Press the recirculation button again to activate the code and to display it' s reading in mph."
However on my 2003 A4 while I can get the temp in degrees F as above, I cannot get the "1c" to appear - as I don't have an up arrow above my recirc button. Anyone got this to work?
If not it's timing those mile markers, which is a bit hit and miss.