I just replaced the lambda sensor and was wondering if you have to reset the lambda sensor switch unit as it kicks the light on the dash at 30,000 miles.

Thanks for any info

The unit is located under the dash, just to the right of the steering column (left hand drive cars). It is a black box with a wire going into the back. There is a round hole that is filled with a screw or bolt that has to be removed (the screw, not the hole). Once the screw has been removed, push a small screwdriver or other small tool into the hole and push until you feel a click. That will reset the counter for another 30,000 miles.

Thanks .... I will try this tonight when I get home.