I'm coming up on 45,000 miles and have never been able to reset the wrench. I'm glad it just goes back to counting miles after 30 seconds or so. I've tried the procedures in the owners manual and on
Evilution many times and haven't even come close. I rank the 'wrench' as the single worst feature on the smart cars! What a waste, I would much rather have a temperature guage than the clock also.