159 service adjustment

Benzina159 · Post by **Benzina159** » 13 Dec 2011, 16:23

Hi, i recently accidentally reset my service indicator on my 159 2.2jts, i wanted to change it back to the lower number that it was but fot some reason each time i execute it, it gives me a error saying it failed to execute, anybody have any solutions or ideas to this problem, thanks in advance