My husband is the chief mechanic and uses this on our daughters cars. They don't have new cars and one or the other always has something going on, so it's convenient. It reads codes and managed to fix them with this code reader. He had no problems and seems to like this instrument very much. This comes in handy in our house as we have a lot of old cars (not old ones) and it helps diagnose them. It works very well on our daughter's Mercedes, which is quite worn out, but it keeps us up to date on problems with the check engine light. It's easy for my husband to use and is quickly helping to reduce dealer visits.
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