Depending on your car/engine, it works it out as 10000miles or 12months, whichever comes first I think.
On a MkIV Golf you reset it like this:
1. Push and hold the odometer button.
2. Turn on ignition.
3. Turn digital clock button clockwise, and choose the service you want to reset.
4. Turn off ignition.
Your Service indicator should now have been reset.
I would imagine the above is the same on a Polo. If not, hopefully someone will come along to help!
Polo 96-99
IN01 -inspection service
Switch ignition ON
Press and hold button (A left) under speedo
Switch ignition OFF
Release button
Press and release button A (left)
The letter “IN01” will appear in the odometer display of the speedometer.
Press clock minute button B until “—–” appears in the display
Press button A (left) to display “OEL”
Press button B to display “—–”
Switch ignition on until the letters “IN00” appear in the display
I have instructions for Oil service (OEL) and IN02 inspection service if this doesn’t work.
1. To reset MAINT reminder light after engine oil replacement, turn ignition switch to OFF position with odometer showing ODOMETER READING. Turn ignition switch to ON position while holding down trip meter RESET button.
2. Hold trip meter RESET button down for at least 5 seconds until odometer indicates “000000” and MAINT reminder light goes out.
Put the key into the ignition and turn it to position “I.”
Press the trip odometer button in and hold it. Turn the ignition key to position “II.”
Wait about 5 seconds until the service engine light begins to blink. After the 4th blink, turn the ignition key back to position “I.”
Release the button and start the engine. The light should have turned off. If not, repeat steps 1 through 4 again.
BMW 2001 to current
Ignition Off (Position 0)
Press and Hold the trip odometer button while turning key to position 1 (ACCESSORY)
Keep the button depressed (about 5 secs.) until you see “Oil Service” or “Inspection” with “Reset” or “Re” in the display*
Press the button again and hold for approx. 5 secs. until “Reset” or “Re” flashes
While the display is flashing, briefly press the button again to reset the Service Interval. After the display has shown the new interval you should see “END SIA” for about 2 seconds
Note: that if the “Reset” or “Re” does not flash, then you have not met the minimum consumption level and cannot reset
*Note: On vehicles with “High” cluster, you will also see the amount of fuel (in litres) remaining until next service