Not all VW's are equipped with maintenance reminder lights.
See Figures 1, 2 and 3
On some models, there is an EGR warning lamp that is located in the instrument cluster. Every 15,000 miles (24,000 km), the EGR warning lamp will light. This tells the driver that the EGR and emission systems should be inspected and checked for proper operation.
The CAT warning light used on some models should come on at 30,000 mile (48,000 km) intervals to remind you to have the catalytic converter serviced.
Also on some models, there is an oxygen sensor (OXS) light located in the instrument cluster. This indicates when the oxygen sensor should be replaced.
Once the system has been serviced, reset the light(s) as follows:
Locate the mileage counter found under the hood. It is mounted near the firewall, inline with the speedometer cable. To locate the counter, follow the speedometer cable up from the transmission towards the firewall. Once the counter is located, push in the reset button marked EGR, OXS or CAT. These buttons are located right on the face of the mileage counter.
Some Rabbits and Pick-Ups are not equipped with the firewall mounted mileage counter. If so, remove the instrument panel cover trim plate. Locate the mileage counter rest arms at the top left corner of the speedometer housing. Pull the release arms to reset the mileage counter. The left arm is used to reset the EGR warning light and the right arm is used to reset the oxygen sensor warning light.